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Maria Violaris

@maria__violaris

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Quantum physicist and science communicator. PhD @UniofOxford | Prev. @IBM Quantum @Qiskit | Writer @PhysicsWorld | Outreach @qqq_iop | Founder @quantuminfosoc

Oxford
https://t.co/Pe4H7M1tFS
Joined May 2021
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
Time to make sense of locality in quantum mechanics! Excited to release Ep. 1 of my new Quantum Foundations video podcast, discussing locality with @NicetuTV , which was the key focus of his PhD at @OxfordPhysics .
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Locality in Quantum Physics Explained | Quantum Foundations Podcast...

Welcome to Episode 1 of my new Quantum Foundations podcast! I interview Dr Nicetu Tibau Vidal, a Research Fellow at the University of Hong Kong. We discuss l...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
The idea that distant entangled particles "can influence each other instantaneously" is a common myth: QM doesn't actually require any spooky-action-at-a-distance! Instead, entangled particles each carry locked-up information, accessible only when they interact directly.
@PhysInHistory
Physics In History
@PhysInHistory
11 months
Locality is the idea that an object can only be influenced by its immediate surroundings, and that interactions cannot propagate faster than the speed of light. In quantum mechanics, locality is challenged by the phenomenon of entanglement, where two distant particles can share
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@maria__violaris
Maria Violaris
@maria__violaris
10 months
My paper on quantum thought experiments as an educational tool, which I presented for an invited talk at QSEEC 2023, is now published and available to read! It's available on arXiv here: and in the IEEE QCE proceedings here:
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@maria__violaris
Maria Violaris
@maria__violaris
14 days
Had fun filming a new Quantum Foundations Podcast episode with @Sam_kuyp ! If you want to understand the many-worlds theory of quantum mechanics, stay tuned 😎🌎🌍🌏
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
"Many-Worlds" is testable against the "Copenhagen" interpretation of QM! Here I explain the thought experiment proposed by @DavidDeutschOxf in 1985 using a coin analogy, and code a qubit simulation of it with @qiskit :
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Testing “Collapse” on Quantum Computers: Many-Worlds vs Copenhagen...

In 1985, an experimental test between the many-worlds theory and Copenhagen interpretation was proposed - which catalysed the proposal for a universal quantu...

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@maria__violaris
Maria Violaris
@maria__violaris
11 days
Has anyone ever switched from preferring the Everettian interpretation to another interpretation of quantum theory?
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@maria__violaris
Maria Violaris
@maria__violaris
3 years
Introducing Quantum Minesweeper!✨I explain the #quantum bomb paradox 💣its applications🔬and how to code it on a #quantumcomputer with @qiskit 👩‍💻in this video: .
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Quantum Minesweeper Paradox: How to See a Bomb Without Looking

Imagine you are given a box and you can't see what's inside. All you know is that it is either empty, or it contains a highly sensitive bomb. If this bomb is...

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@maria__violaris
Maria Violaris
@maria__violaris
3 months
Wigner’s friend won’t prove reality doesn’t exist, but could test many-worlds v Copenhagen collapse. The beauty of thought experiments is that they’re far-fetched yet advance science. @DavidDeutschOxf ’s Wigner’s friend extension led to quantum computing!
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Testing “Collapse” on Quantum Computers: Many-Worlds vs Copenhagen...

In 1985, an experimental test between the many-worlds theory and Copenhagen interpretation was proposed - which catalysed the proposal for a universal quantu...

www.youtube.com
@skdh
Sabine Hossenfelder
@skdh
3 months
A group of physicists wants to use artificial intelligence to prove that reality doesn’t exist. They want to do this by running an artificial general intelligence as an observer on a quantum computer. I wish this was a joke. But I’m afraid it’s not.
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
Wave-particle duality makes more sense using quantum computing: in this video, I explain the results of the quantum double-slit experiment without needing observers. All we need is a good understanding of decoherence.
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Double-Slit Experiment on a Quantum Computer: Wave Particle Duality...

Quantum systems are often said to behave as waves when no one is looking, but as particles when observed. In this video, Oxford PhD researcher Maria Violaris...

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@maria__violaris
Maria Violaris
@maria__violaris
10 months
Here I explain the EPR paradox using quantum computing, & how Einstein's local realism is fully consistent with universal QM and Bell's theorem. The Heisenberg pic lets us track local info flow in EPR, via locally inaccessible info, w/o hidden variables:
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Was Einstein Right? EPR Paradox Resolved with Quantum Computing |...

The EPR paradox is commonly said to demonstrate an unobservable "spooky-action-at-a-distance" between entangled particles, suggesting that the universe is fu...

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@maria__violaris
Maria Violaris
@maria__violaris
8 months
Pleased to have been awarded the Edward Chapman Research Prize 2023 by @magdalenoxford ! The prize is for my paper on quantum irreversibility and info erasure, co-authored with Dr Chiara Marletto. The paper and a 4-min video abstract are available here:
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
Local QM is fully consistent with Bell's theorem: Bell only rules out hidden variable models, not all local theories. I'll explain this & resolve the EPR paradox in an upcoming @qiskit YouTube video, based on @DavidDeutschOxf 's 1999 paper: .
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
Local quantum theory - explained mathematically with @NicetuTV ! Find out how QM can be formulated in a fully local realistic way, satisfying: 1) No-action-at-a-distance, & 2) Separability, meaning even entangled systems can be fully described individually.
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Local Quantum Theory: The Maths | Quantum Foundations Podcast Ep. 1...

Welcome back to the Quantum Foundations Podcast! In the first part of this instalment, we explained why entanglement does not imply that systems are influenc...

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@maria__violaris
Maria Violaris
@maria__violaris
1 year
Lots of new Quantum Paradoxes videos coming soon to the @qiskit YouTube channel! ft. Schrödinger's cat, quantum observers, quantum teleportation, time-loops and more:
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Quantum Paradoxes Series Trailer

Welcome back to Paradoxes! Join Maria Violaris, a Qiskit intern and Quantum Information PhD student at the University of Oxford across nine mind bending epis...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
Honored to present at @Ri_Science for the @PhysicsNews 3MW Grand Final! I explained the quantum Maxwell's Demon, time's arrow & my work on quantum irreversibility. Fittingly, Maxwell himself frequented this historic lecture theatre, where he demoed the first colour photo in 1861!
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@maria__violaris
Maria Violaris
@maria__violaris
9 months
Interested in a general introduction to quantum computing? I'll be presenting a quantum computing webinar at 6pm GMT on Tuesday 20th February, for the British Computer Society @bcs Manchester branch, you can register here:
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Quantum Computing webinar

Manchester branch webinar

www.eventbrite.co.uk
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@maria__violaris
Maria Violaris
@maria__violaris
2 months
Happy to have my paper about an incoherent quantum homogenizer published in Physical Review A!
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@maria__violaris
Maria Violaris
@maria__violaris
9 months
What do heat engines, kettles, enzymes, playing cards, and planes have in common? They're all "constructors" for tasks. Find out more in my blog post about a recent workshop on constructor theory, and open problems on its application to quantum physics:
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Blog » Questions, Constructors and Card Games

Recounting the Cocconato Constructor Theory Workshop 2023 At 1pm on 23rd August 2023, the particles of an EasyJet Airbus A320 plane were stationed at the Bristol airport runway. Over the next 125...

www.constructortheory.org
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@maria__violaris
Maria Violaris
@maria__violaris
3 months
Enjoyed speaking at the Southampton Uni's Quantum, Light and Matter Summer School, hosted at Surrey Uni! I gave an overview of constructor theory & its applications to information, gravity and thermodynamics, and spoke on a panel about interdisciplinarity in science.
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@maria__violaris
Maria Violaris
@maria__violaris
1 month
Looking forward to the Seeking Quantum Advantage conference in Oxford next week! I’m excited to be co-chairing an Evening Debate on the Wednesday, during which a panel of experts will discuss various aspects of quantum computing in the historic Divinity School. The aim of the
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
On the way to QIP 2023 in Ghent! Looking forward to meeting more quantum people in person. 😊 If you’re at the poster session on Tuesday 7th, come say hi to me and @Sam_kuyp to unlock some quantum paradoxes 🔐
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@maria__violaris
Maria Violaris
@maria__violaris
2 months
Pleased to have my paper accepted for QSEEC24 at IEEE Quantum Week! I will present an in-person talk in Montréal, 15th - 16th September, and attend the Quantum Week until 20th September. If you are also attending and would like to meet or catch up, please send me a message :)
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@maria__violaris
Maria Violaris
@maria__violaris
5 months
What do theoretical physicists do all day? What's it like doing a PhD at Oxford? What does quantum computing education involve? I recorded an ordinary day in my life doing quantum research and education. Feel free to leave any questions in the comments!
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Day in the Life of an Oxford Quantum Physicist & Quantum Computing...

What do theoretical physicists do all day? What's it like doing a PhD at Oxford? What does being a quantum computing educator look like? I'm in the final yea...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
Can quantum observers consistently reason about each other? Asking for a friend of a friend of a friend... In this video, I simplify the recently proposed Frauchiger-Renner paradox to a @qiskit quantum circuit, & resolve it for universal QM:
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Wigner’s Friend of a Friend of a Friend: Can Quantum Observers...

What happens when you put someone's brain into a superposition?In this video, Oxford PhD researcher Maria Violaris explains the recently proposed Frauchiger-...

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@maria__violaris
Maria Violaris
@maria__violaris
10 months
Quantum teleportation lets us send quantum information across space, by only physically sending classical bits! How is this possible?! Find out in my latest video:
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Quantum Teleportation Demystified with a Quantum Computer | Paradoxes...

Quantum teleportation lets us transport an unknown quantum state from one location to another by only physically sending 2 classical bits of information. How...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
12 days
Had lots of quantum-themed fun in Montreal last week! --> Gave a talk about my paper on quantum thought experiment activities on quantum computers that relate to fundamental physics ideas, as part of the 2-day Quantum Science and Engineering Education Conference ( #QSEEC24 ) -->
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@maria__violaris
Maria Violaris
@maria__violaris
5 months
Had a great time at #BQIT ! It was fun to organise & chair the foundations & thermo session, with excellent talks from @AlexiaAuffeves , Twesh Upadhyaya & @GerardoAdesso , and to present a poster about my teleportation-themed project with @s_rijavec & @CABedardPhysics .
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@maria__violaris
Maria Violaris
@maria__violaris
7 months
Had a great time at the Quantum Futures conference on Wednesday and was happy to be awarded the prize for “Most Creative Talk"! The event was organised by Joe Aziz & supported by @SEPhysics , with 30 PhD students presenting their research, alongside 3 quantum industry sessions.
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@maria__violaris
Maria Violaris
@maria__violaris
6 months
It’s World Quantum Day! To celebrate, I’ve collaborated with some friends to launch a quantum pop parody channel “Q the Music”, & release our 1st song: “Qiskit Runtime” (parody of “The Climb” by Miley Cyrus). Hope you enjoy, singing along is encouraged 😊
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Qiskit Runtime | Quantum Pop Parody of "The Climb" by Miley Cyrus

In honour of World Quantum Day 2024, we are releasing our first quantum pop parody — a quantum-computing-inspired reimagining of "The Climb" by Miley Cyrus! ...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
6 months
Can a universal machine deterministically extract work from superpositions of energy states? In a new preprint with Sam Plesnik (), we explore this using different approaches to quantum thermodynamics. Any comments or questions, please get in touch!
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@maria__violaris
Maria Violaris
@maria__violaris
1 month
Alice and Bob: The Scientists that Don’t Exist “Not again!” cries Alice, as machines start to whir. Bob closes the heavy lab doors unperturbed. Another day, new experiments, for A and B to trial, “We’re advancing science!” says Bob with a smile. “But Bob – we don’t exist,
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@maria__violaris
Maria Violaris
@maria__violaris
1 month
@tunguz People who ponder interpretations of Quantum Mechanics make some of the greatest breakthroughs in applications of Quantum Mechanics :) (e.g. Deutsch’s test of many-worlds vs Copenhagen collapse led to quantum computing, & Bell tests investigating local realism led to
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
"Have fun doing science, don't think too much about the applications" - a nice piece of advice at the end of a great talk. It's good to remember how today's useful technologies originated in curiosity- and fun-driven research!
@maria__violaris
Maria Violaris
@maria__violaris
11 months
Looking forward to hosting Prof. @BarbaraTerhal from @tudelft @QuTech_news on the @qiskit Quantum Seminar today! If you're interested in quantum error correction, tune in live at 5pm GMT/ 12pm ET to ask questions and join the discussion:
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Can you tell quantum truths from classical lies? 🤥 In my latest @qiskit video I explain Hardy’s paradox, and how to code a quantum lie detector with a #quantumcomputer 👩‍💻 to reveal where classical reasoning goes wrong for entangled particles 🪢⚛️:
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Quantum Lie Detector: How to Win Two Truths and a Lie | Quantum...

Let’s play a game of two quantum truths and a lie – to find the truth behind Hardy’s Paradox. Oxford PhD student Maria has created a quantum lie detector usi...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
Maxwell’s Demon explained in 72 seconds! This is a clip from my talk for the IOP 3-Minute-Wonder competition, I’ll post the full video on my YouTube channel soon :)
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@maria__violaris
Maria Violaris
@maria__violaris
1 year
Not only is the Copenhagen "interpretation" just a recipe for calculations - there are domains where it cannot be used for calculations (e.g. for systems between macro- and micro- scales)
@jimalkhalili
Jim Al-Khalili
@jimalkhalili
1 year
Nice summary of the different interpretations of quantum mechanics. Most physicists will have a view or a comment about one or more. Mine is that the first one (Copenhagen) is not an interpretation – it's a recipe for calculations that avoids needing an interpretation.
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@maria__violaris
Maria Violaris
@maria__violaris
7 months
Ever collaborated with a lab partner that doesn't exist? For my latest @qiskit blog, I explain "Wigner's friend", how observing an observer causes contradictions in Copenhagen QM, & how to simulate this on today's quantum computers using Qiskit!
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@maria__violaris
Maria Violaris
@maria__violaris
6 months
I recently updated my personal website, ! I've added research, content, & blog / news pages. Content has links to past videos, articles, projects and podcasts in one place. I'm planning to keep expanding these pages over time :)
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@maria__violaris
Maria Violaris
@maria__violaris
29 days
Had a great time at the Seeking Quantum Advantage ( #SEEQA24 ) conference in Oxford this week! It was interesting to hear about and discuss the latest progress and outlook on topics like hardware development, error mitigation, quantum error correction, quantum algorithms and more,
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@maria__violaris
Maria Violaris
@maria__violaris
2 months
Excited for the upcoming Cocconato Workshop on fundamental physics! Topics include constructor theory, quantum biology, quantum time and thermodynamics. Thanks @eutopiafndtn , @templeton_fdn , & @MooreFound for supporting the event.
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@maria__violaris
Maria Violaris
@maria__violaris
26 days
Earlier this year, I completed my internship with the IBM Quantum Community Team, which I have been doing part-time alongside my PhD since 2021! Mostly I worked remotely with the @qiskit video team, though a highlight was visiting the New York office in Manhattan last summer to
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@maria__violaris
Maria Violaris
@maria__violaris
8 months
Qubit in one hand, cat in the other! I had fun presenting at the @magdalenoxford Convivium yesterday and hearing cool talks about literature, history and philosophy. Also tried a new "Maxwell's Demon" demo with a Ferrero Rocher box (the demon's memory) and Mini Egg particles 😄
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
The delayed-choice quantum eraser seems to suggest that a measurement now can affect a particle's past behaviour. In this video, I resolve this paradox with no backwards-in-time influence, by simplifying it to a quantum circuit:
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Delayed-Choice Eraser on a Quantum Computer: Can We Change the Past?...

The delayed-choice eraser thought experiment poses the following dilemma: it seems that the choice we make now about whether or not to erase a particle's inf...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
8 months
I was confused by Newcomb's Paradox when I first read about it in The Pig That Wants To Be Eaten. Years later I read a nice explanation on the constructor theory website. It inspired this 5-min video! Themes include simulations, predictability & free will:
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Newcomb's Paradox: A Glitch in the Admissions Process | David Deutsch...

A short video story for David Deutsch's 70th birthday, inspired by the Short Comment "Constructor-theoretic reflections on Newcomb's paradox" from the Constr...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
@WKCosmo Bell's theorem only rules out local hidden variable models, not all local theories - see here:
@maria__violaris
Maria Violaris
@maria__violaris
11 months
Local QM is fully consistent with Bell's theorem: Bell only rules out hidden variable models, not all local theories. I'll explain this & resolve the EPR paradox in an upcoming @qiskit YouTube video, based on @DavidDeutschOxf 's 1999 paper: .
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@maria__violaris
Maria Violaris
@maria__violaris
6 months
I'm excited to have won the @IOPLSE Heat of the IOP 3-Min-Wonder competition (with the help of mini-eggs & popcorn)! I'll be competing in the Grand Final on 29th May, book here to join & watch all the regional winners: . It's free, 6pm at @Ri_Science .
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@maria__violaris
Maria Violaris
@maria__violaris
6 months
What's the difference between logical qubits and physical qubits? In this video, I explain a simple example using quantum circuits. Logical qubits are important for quantum error correction, which is needed for accurate large-scale quantum computers.
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What is the difference between logical and physical qubits? - 1...

Welcome to 1 Minute Qiskit, where we answer your questions and chat Qiskit tips and tricks. This week, the question is: What is the difference betweenlogical...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
10 days
*How many branches are there in the multiverse when Alice and Bob each measure an entangled qubit?* Imagine an entangled pair of qubits, separated by a large distance. Alice measures qubit 1, Bob measures qubit 2. Alice and Bob are completely isolated from each other and
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
Pleased to have been selected as a winner of this year’s Rising Star Awards!
@WeAreTheCity
WeAreTheCity
@WeAreTheCity
4 months
WINNERS ANNOUNCEMENT ⚡️ Meet our 2024 #RisingStars100 Winners in the Education & Academia Category, sponsored by @WarwickBSchool ! 💜✨ Congratulations to our winners and to everyone shortlisted or nominated this year 🥳🥂 #11 ·
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@maria__violaris
Maria Violaris
@maria__violaris
2 months
I had the pleasure of delivering three Distinguished Guest Lectures for the Indiana University Bloomington Quantum Summer School over the past few weeks! I spoke about quantum science and quantum computing, via various quantum thought experiments. 1/4
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@maria__violaris
Maria Violaris
@maria__violaris
9 months
Had a fun chat about my experiences in quantum, with research, internships, projects & sci comm. We also talked about recent progress in quantum computing, cool to think about all the new developments since we filmed this back in March!
@HrvojeKukina
Hrvoje Kukina
@HrvojeKukina
9 months
I had an excellent conversation with Oxford DPhil student in quantum information and science communicator @maria__violaris . #quantum #quantumtheory #quantummechanics #quantumcomputer #quantumphysics #quantumcomputing #qiskit #physics #mathematics
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@maria__violaris
Maria Violaris
@maria__violaris
6 months
I'm excited to have been selected to compete in the IOP's @PhysicsNews 3-Minute-Wonder sci comm competition next Weds 10th April! The challenge is to present a 3-minute talk for general public. To join the audience for the London heats, book here: .
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@maria__violaris
Maria Violaris
@maria__violaris
1 year
@DavidDeutschOxf Glad you liked it! Happy birthday! 😄
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Excited to host Lia Yeh for the @qiskit Seminar Series this Friday 10th March! Lia will talk about her work at @CompSciOxford @UniofOxford on "How to Generalize Qubit Circuits to Qudits". 12pm ET/ 5pm GMT on the Qiskit YouTube channel 👇😀
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How to Generalize Qubit Circuits to Qudits | Qiskit Seminar Series...

How to Generalize Qubit Circuits to QuditsQiskit Seminar Series with Lia YehYour formal invite to weekly Qiskit videos ► https://ibm.biz/q-subscribeThis week...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
7 months
Looking forward to chairing this session on quantum foundations and thermodynamics for the Bristol Quantum Information Technologies workshop in April! There's still time to register if you're interested in joining :)
@QETLabsBristol
QET Labs Bristol
@QETLabsBristol
7 months
We are very excited to share the confirmed sessions and speakers for BQIT:24! First up, we have Twesh Upadhyaya, Alexia Auffeves, and Gerardo Adesso who will be speaking in the Quantum Foundations & Thermodynamics session. Join us at BQIT:24 in-person/online to hear their talks!
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@maria__violaris
Maria Violaris
@maria__violaris
5 months
Pleased to be shortlisted for the @WeAreTheCity Rising Star Award!
@WeAreTheCity
WeAreTheCity
@WeAreTheCity
5 months
SHORTLIST ANNOUNCEMENT ⚡️ Meet this year's #RisingStars100 Shortlist for our Education & Academia Category, sponsored by @WarwickBSchool ! 💜✨ You can show your support by voting today until 20 May 2024 🥳 #11 ·
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
Looking forward to hosting Prof. @BarbaraTerhal from @tudelft @QuTech_news on the @qiskit Quantum Seminar today! If you're interested in quantum error correction, tune in live at 5pm GMT/ 12pm ET to ask questions and join the discussion:
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0-Pi Qubits as Homological Rotor Codes | Qiskit Quantum Seminar with...

Episode 146Quantum rotor codes can encode logical qudits or rotors in the space of multiple quantum rotors. Such rotors can be physically realized by superco...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
1 month
Had a great time performing my quantum poem, "Alice and Bob: The Scientists that Don't Exist", at the inaugural Quantum Carousel in Bristol! The poem is a conversation between Alice and Bob, the well-known characters from quantum thought experiments, in which they have an
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@maria__violaris
Maria Violaris
@maria__violaris
10 months
In "A Christmas Carol", Scrooge is visited by Ghosts of Christmas Past, Present & Yet-To-Come. I had a go at re-imagining the classic tale as a time-travel story consistent with quantum mechanics, in my latest Qiskit blog post:
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@maria__violaris
Maria Violaris
@maria__violaris
7 months
Recipe for Chocolate Quantum Teleportation Demo: 2 red Lindt chocolates as entangled qubits; 2 black ones as the data qubit (Alice sends one, Bob receives the other); 2 choc coins for classical communication. Here's (some of) one I made earlier, with @s_rijavec as Bob:
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@maria__violaris
Maria Violaris
@maria__violaris
3 months
Looking forward to giving a webinar about quantum computing this Tuesday 23rd July, for the Aga Khan Education Board for Pakistan. If you'd like to join, it's at 5pm PKT / 1pm BST, on Zoom: Meeting ID: 828 1678 2617 Passcode: 567415 Link:
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@maria__violaris
Maria Violaris
@maria__violaris
10 months
For more background and technical details, check out the papers: (1) "Information flow in entangled systems" by @DavidDeutschOxf & Patrick Hayden, (2) "The ABC of Deutsch-Hayden descriptors" by @CABedardPhysics , .
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The ABC of Deutsch-Hayden Descriptors

It has been more than 20 years since Deutsch and Hayden proved the locality of quantum theory, using the Heisenberg picture of quantum computational networks. Of course, locality holds even in the...

arxiv.org
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@maria__violaris
Maria Violaris
@maria__violaris
23 days
Just a few days left until the Quantum Science and Engineering Education Conference 2024 ( #QSEEC24 ) at IEEE Quantum Week in Montréal! If you're there come along for my talk on Monday about testing thought experiments based on different disciplines as an educational tool for
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
Had fun recording some quantum foundations-themed content with @NicetuTV during his visit to Oxford last week! If you'd like to understand quantum mechanics and the nature of reality, informed by recent research, stay tuned for cool things coming out soon...
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@maria__violaris
Maria Violaris
@maria__violaris
1 year
Why do we only ever see Schrödinger's cat being alive or dead? Turning cats into @qiskit qubits, I explain how superposition, entanglement and decoherence cause the emergence of a seemingly classical reality from quantum mechanics:
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Schrödinger's Cat Explained with Quantum Computing | Paradoxes Ep. 01

Can a cat be dead and alive at the same time? According to quantum mechanics, a cat inside a box can be in a superposition of being dead and alive. Yet, when...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
16 days
Looking forward to participating in the Vienna Quantum Foundations Conference next week! The conference takes place from Monday 23rd September to Friday 27th September, hosted by @iqoqivienna . I will be presenting a flash talk and a poster at the conference, related to my
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@maria__violaris
Maria Violaris
@maria__violaris
6 months
Looking forward to attending and presenting a poster at #BQIT next week, hosted by @QETLabsBristol ! If you're going and would like to chat do lmk. Also, come by poster 46 to discuss quantum teleportation & cast your vote in my "quantum vs classical" chocolate poll...!
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Is this video playing forwards ⏩or backwards ⏪? How can you tell...? Had an awesome time presenting my three-minute talk on time's arrow, entropy and Boltzmann brains from the @FameLab 2020 Oxford final at @CheltSciFest last week, watch here🔀
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Looking forward to giving an online quantum physics course for High School physics teachers! 4pm Thurs 30th March. Please share with UK teachers @OxfordPhysics @magdalenoxford @qqq_iop @IOPTeaching @ogdentrust @STEMAmbassadors and thanks @melissa_lord16 for the recommendation ✨
@PTIEducation
The PTI
@PTIEducation
2 years
Physics teachers, sign up to this online course with @maria__violaris to deepen your understanding of Quantum Physics and how to enthuse your pupils about science and encourage them to find out more themselves! 🌠 Find out more:
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
@skdh Aside from Einstein's intentions, there's a common myth that the EPR paradox shows entanglement -> action-at-a-distance. But Heisenberg picture QM explicitly obeys Einstein's locality principle, so is local like GR. What do you think of this explicitly local formulation of QM?
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
@WKCosmo We give up HVs, and still have locality. HV theories assume classical probability distributions (violated by QM). The "locked-up" info is "locally inaccessible info", not HVs. See section 7 "Irrelevance of Bells' theorem":
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Maria Violaris
@maria__violaris
4 months
Did you know there's a function for calculating von Neumann entropy in Qiskit's quantum information module? Find out more in this episode of 1-Minute-Qiskit!
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How Do I Calculate Entanglement Entropy in Qiskit? - 1 Minute Qiskit

Welcome to one minute Qiskit, where we answer your questions and share Qiskit tips and tricks. This week the question is: how do I calculate entanglement ent...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
10 days
@CompostZone The Everettian interpretation is commonly explained with the phrase “everything that can happen, does happen”. I think that’s misleading. Even in a quantum multiverse, the set of things happening in different branches is constrained. It depends on what branches specifically
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@maria__violaris
Maria Violaris
@maria__violaris
5 months
Happy to have been shortlisted as a Finalist and received a Special Mention for the @PhysicsNews Physics Communicator Award! Congrats to Ryan Edginton for receiving the award & a great Award Lecture, and to the other finalists. Great to see physics communication celebrated.
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Quantum measurements split information three ways. Find out the links to quantum teleportation, error correction and irreversibility in my latest article for @PhysicsWorld , published on #WorldQuantumDay : . Thanks @HyperboIeva and @DrMLHarris for editing!
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Quantum measurement splits information three ways – Physics World

Photonic experiment shows the limits of recovering information about a quantum state

physicsworld.com
@PhysicsWorld
Physics World
@PhysicsWorld
2 years
Physicists in South Korea have demonstrated experimentally that the act of measuring a quantum system splits information encoded in the system between the measurer, the measured state, and information that can be recovered.
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
Excited to be at the @perspektywy_s #WOMENINTECHSUMMIT2024 !
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@maria__violaris
Maria Violaris
@maria__violaris
3 months
There’s loads of examples of fantastical thought experiments with huge influence, & that became technologically feasible. One of my favs is Maxwell’s Demon: proposed in 1800s, & today versions of it can be implemented experimentally & have been found in molecular machines too!
@maria__violaris
Maria Violaris
@maria__violaris
4 months
Maxwell’s Demon explained in 72 seconds! This is a clip from my talk for the IOP 3-Minute-Wonder competition, I’ll post the full video on my YouTube channel soon :)
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Does quantum erasure cost more than you remember?🧠 In my new arXiv preprint with Chiara Marletto, we apply constructor-based irreversibility to the information-erasure step of a quantum Szilard engine — the single-particle realization of Maxwell’s Demon.
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@maria__violaris
Maria Violaris
@maria__violaris
10 months
Join me live on the Qiskit Quantum Seminar tomorrow 12ET / 5GMT! I'll discuss my work with Chiara Marletto on a constructor-theoretic quantum model for exact irreversibility that's consistent with reversible dynamics, & its implications for erasing info:
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Purifying the Demon: Does Quantum Erasure Cost More Than You Rememb...

Episode 147Erasure is fundamental for information processing. It is also key in connecting information theory and thermodynamics, as it is a logically irreve...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
10 months
Can we solve time-travel paradoxes using quantum mechanics? In this video I use quantum computing to simulate closed-timelike-curves, and show how access to time-loops could give us computational power far beyond a quantum computer:
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Back to the Future on a Quantum Computer: Demystifying Time Loops |...

Imagine you could go back in time and meet your past self. Time-travel can lead to all kinds of paradoxes - but what happens when we try and model time-trave...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
9 months
Join me for the @qiskit live seminar starting soon at 12pm ET / 5pm GMT! Frank Pollmann will be speaking about applications of quantum computing for condensed matter physics:
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Realization and Characterization of Topological Phases on Quantum...

Episode 149The interplay of quantum fluctuations and interactions can yield novel quantum phases of matter with fascinating properties. Understanding the phy...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Great @qalypsoschool on quantum thermodynamics last week! We had informative tutorials and many discussions on Gozo island in Malta. Thanks @curlyqubit and your team for organising, and all the speakers & participants for the fun quantum food for thought ☀️
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
My blog post explaining the background to Schrödinger’s cat is now out on the Qiskit medium, at the link below! Each video of the series will be accompanied by a blog 😊
@qiskit
Qiskit
@qiskit
1 year
Quantum Paradoxes, a series where we resolve quantum paradoxes using the tools of quantum computing, is back with more episodes each Wednesday—the first of which correlates the famous Schrödinger’s Cat experiment with quantum superposition. 1/2
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
The full video of my talk for the @PhysicsNews 3-Minute-Wonder Grand Final, “Can a Quantum Demon Reverse the Direction of Time?” is now up on my YouTube channel!
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IOP 3 Minute Wonder | Maria Violaris | Can a quantum demon reverse...

This is my performance for the Grand Final of the Institute of Physics 3-Minute-Wonder competition, which invites early career physicists to present their wo...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
1 year
Excited to host Professor @ElhamKashefi ( @EdinburghUni ) for the live @IBM Quantum @qiskit Seminar Series tomorrow, Friday 12th May! Tune in at 12pm ET / 5pm BST:
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Verifying BQP Computations on Noisy Devices with Minimal Overhead |...

Qiskit Seminar Series with Elham KashefiYour formal invite to weekly Qiskit videos ► https://ibm.biz/q-subscribeSpeaker: Elham KashefiHost: Maria ViolarisAbs...

www.youtube.com
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
@KAleksovski Imagine two particles, A and B, are fully entangled. We do something to particle A, storing "locked up" info at A's location. This info can only be "unlocked" (i.e. accessed by measurements) using particle B, but it is locally stored at A. See also:
@maria__violaris
Maria Violaris
@maria__violaris
11 months
Local QM is fully consistent with Bell's theorem: Bell only rules out hidden variable models, not all local theories. I'll explain this & resolve the EPR paradox in an upcoming @qiskit YouTube video, based on @DavidDeutschOxf 's 1999 paper: .
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@maria__violaris
Maria Violaris
@maria__violaris
10 days
For more details: Local branching is explained by @Sam_kuyp and @DavidDeutschOxf in their paper “Everettian relative states in the Heisenberg picture”: The relativistic thought experiment is explained by @CABedardPhysics in his paper “The Local Account
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Everettian relative states in the Heisenberg picture

Everett's relative-state construction in quantum theory has never been satisfactorily expressed in the Heisenberg picture. What one might have expected to be a straightforward process was impeded...

arxiv.org
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Time-reversed caterpillars, animated black holes, quantum-internet Lego, stop-motion sweets, quantum computing comedy news show, cartoons discussing black-bodies, and much more - watch all the winning Quantum on the Clock videos!
@qqq_iop
IOP QQQ Group
@qqq_iop
2 years
The winners of our inaugural Quantum on the Clock competition for pre-university students are up on our webpage! Check them out: and on the @PhysicsNews Youtube channel Thanks for all the fantastic entries :)
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
The @qqq_iop Quantum on the Clock schools video competition is open for entries! 🥳 How will students explain #quantum science or tech in a creative, concise and accessible way?💥📸⏰
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@maria__violaris
Maria Violaris
@maria__violaris
3 years
@qiskit Check out my @qiskit blog post about quantum thought experiments here:
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Building Quantum Bomb Testers (And Other Thought Experiments) with Quantum Computers

By Maria Violaris, PhD student at the University of Oxford

medium.com
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@maria__violaris
Maria Violaris
@maria__violaris
11 months
@SPortoghesi @DavidDeutschOxf That's exactly the common misconception, perpetuated in research papers, courses and popular expositions of quantum theory. Even if particles are entangled, we can fully describe their individual states when using the right mode of description. See also:
@maria__violaris
Maria Violaris
@maria__violaris
11 months
Local QM is fully consistent with Bell's theorem: Bell only rules out hidden variable models, not all local theories. I'll explain this & resolve the EPR paradox in an upcoming @qiskit YouTube video, based on @DavidDeutschOxf 's 1999 paper: .
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@maria__violaris
Maria Violaris
@maria__violaris
18 days
Today I got a Facebook memories "On this day" reminder of my sister @Elena__Violaris 's status from 9 years ago, where she spoke about my "oscar-wilde inspired essay [that] shows literature and physics can be reconciled". Amusingly, I've written literature-inspired physics essays,
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
My new @qiskit video is about the quantum pigeonhole #paradox , which claims that a fundamental principle of mathematics is violated by #quantum mechanics. Find out how to count pigeons on a #quantumcomputer 🔢and code the thought experiment yourself 👩‍💻:
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Thanks to all the expert judges: @physicsonpointe @jimalkhalili @DecaroliChiara @quantum_spiros @acblet @Universal_Soup_ @DrMLHarris @Looking_glass_u @QuantumWorkshop @nickbronn @MeteAtature @ryanlmann @quantumpod @melissa_lord16 Andrew Hanson & Vlatko Vedral
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Meet the Quantum on the Clock schools video competition judges! You can watch Dr Merritt Moore @physicsonpointe , the quantum ballerina, dance her PhD at @OxfordPhysics in the 3-minute-video "EnTANGOed" here: 💫✨
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WINNER “Dance Your PhD” Physics 2015: EnTANGOed - PhD researcher...

Spontaneous Parametric Down-Conversion: Photon Pair Generation For my PhD in Atomic & Laser Physics at the University of Oxford, I create pairs of photons to...

www.youtube.com
@qqq_iop
IOP QQQ Group
@qqq_iop
2 years
Dr Merritt Moore @physicsonpointe has a PhD in quantum physics from @OxfordPhysics , @UniofOxford and also pursues a professional ballet career. She has had astronaut training and programs and dances with robots!
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@maria__violaris
Maria Violaris
@maria__violaris
3 months
@ZacconeAlessio @DavidDeutschOxf I think quantum computing is a nice example of how a (presently) completely infeasible thought experiment catalysed proposals for technology that there’s a global effort to actually build today (regardless of how long until it’s large-scale & useful) :)
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@maria__violaris
Maria Violaris
@maria__violaris
9 days
Is there any point in a new interpretation of quantum theory if it has equivalent empirical predictions to other interpretations? There’s been some discussion / talks at the Vienna Quantum Foundations Conference ( #vqf24 ) regarding potential empirical divergences of
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
Welcome to my office! It was fun to have a quick chat with @OxUniMaths about what I’m up to in there. (Time has indeed flown since then and the paper draft in the background is now on arXiv!)
@OxUniMaths
Oxford Mathematics
@OxUniMaths
2 years
We've spent the marvellous month of May travelling the Andrew Wiles Building, home to @OxUniMaths , to find out what mathematicians actually do, and why. And we've just arrived at @maria__violaris ' office. Maria has time on her hands. Quantum time. Me and My Maths - Part 2.
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@maria__violaris
Maria Violaris
@maria__violaris
2 years
@davidad @coecke One of the FAQs addressed on the Constructor Theory website is "How does constructor theory differ from the framework of resource theories?", see here: :)
Frequently Asked Questions » Constructor Theory

Find out what Constructor Theory is all about. Research carried out at Oxford University, supported by the Templeton World Charity Foundation.

www.constructortheory.org
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@maria__violaris
Maria Violaris
@maria__violaris
4 months
@perspektywy_s Great Day 1 of the Summit: speaking on the Women in Quantum panel, networking with women and the Polish community in quantum and tech, and a reception at the British Embassy Warsaw! Nice to see a range of quantum talks and exhibitors & so many attendees.
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