Quantum Physics Corner retweeted
While walking to work, I just had a chat with ChatGPT to make sure I understood what the claimed singular solution to Navier-Stokes would mean *physically.* Here's a tweet thread it generated for me. Hope you find it helpful. (I rewrote it a bit to clarify what's surprising.)
Quantum Physics Corner retweeted
I just found a fairly new primer published on arXiv titled ''An Introduction to the Foundations and Interpretation of Quantum Mechanics'' by Nazir and McKeever.
Both physicists and philosophers will enjoy this one, it's a fairly short (15 pages) read and requires nothing but a basic understanding of quantum mechanics (and it's mathematics) and basic notions of philosophy.
🔗👇👇
Quantum Physics Corner retweeted
Correcting noisy quantum gates with shortcuts to adiabaticity
by Moallison F. Cavalcante, Bariş Çakmak, Marcus V. S. Bonança and Sebastian Deffner
@UMBC
👉 iopscience.iop.org/article/1…
Quantum Physics Corner retweeted
Today was silently a huge day for quantum computing 👀 ⚛️
@Google Quantum AI just dropped a paper suggesting Bitcoin and Ethereum could be broken with about 1K logical qubits, in a matter of minutes using superconducting qubits.
Meanwhile, @TeamOratomic (in stealth until literally hours ago), counting some of the best researchers in the field like John Preskill, Madelyn Cain, and Dolev Bluvstein, matched similar results with atoms but way more hardware-efficient (26K physical qubits).
So, what’s the deal? 🤔
⚡ TIME/SPEED
(à la superconducting, Google): matters because it opens the door to new use cases, for example “on-spend” attacks targeting transactions while they are occurring, instead of being limited to Satoshi's era abandoned public keys where one can take months to crack.
⏰ HARDWARE/OVERHEAD
(à la atoms, Oratomic): on the flip side, if your approach needs orders of magnitude fewer resources, you’re likely to be able to build the machine capable of doing so sooner.
Interestingly, Google used zero-knowledge proofs to demonstrate their results, meaning how they got to the figures is hidden. We might be seeing much more “black-box Shor’s” implementations going forward…
What about us? 🐈⬛
Alice & Bob has already published two landmark papers on this topic, one in 2023 mentioned in Google’s latest work, and another in 2024 using an LDPC architecture adapted to cat qubits, needing just 100K physical qubits. A cat qubit approach is both hardware efficient, low in overhead AND fast. 🚀
Even better, we’re actively working on our updated architecture. Stay tuned 👀
Links to the papers below 👇
#QuantumComputing #QuantumPhysics #FTQC #GoogleQuantumAI
Quantum Physics Corner retweeted
As academics, we all receive a steady stream of pro bono requests. Personally, I write a lot more than ten recommendation letters each month, referee journal submissions, and—somewhat more tediously—prepare external assessment letters for hiring committees. I am, of course, committed to contributing to the profession alongside my primary responsibilities: conducting extensive research, teaching, and managing other academic duties. I see myself as a mentor and try to support colleagues and students whenever I can.
And I am happy to do so.
Yet, I sometimes find myself pausing. When I respond to substantial requests from hiring committees only to receive out-of-office replies lasting weeks, I cannot help but wonder: Wait, why is this request considered so legitimate and urgent on my end? Many academic publishers generate enormous revenues—some in the billions annually. Publishing is undoubtedly important. But are we allocating our publicly funded time and effort wisely?
This leads to broader questions. Should we reconsider the structure of our refereeing system and the expectation that so much academic labor be provided pro bono? Should referees be compensated for their work? Why are these responsibilities so often taken for granted? Should external review letters for hiring decisions be paid? And if such labor remains unpaid, why is it acceptable that those requesting it are unreachable?
I admit and confess that I do not have clear answers. I am deeply committed to science and perhaps overly motivated when it comes to contributing to the academic community. Still, I am uncertain about whether our current system is well designed.
More fundamentally, should we rethink the incentive structures that shape academic life? And to what extent might academia be allowing itself to be exploited? Should we rethink to some extent how academia is being done?
Comments most welcome, I have no good answers.
Quantum Physics Corner retweeted
The 2025 Nobel prize in physics has been awarded for pioneering the use of Josephson junctions in superconducting circuits to demonstrate and control fundamental quantum phenomena. For example collective quantum tunnelling effects for large numbers (billions) of particles
The Nobel Prize@NobelPrize7 Oct 2025Sweden
SwedenConnected via Sweden App StoreAccount-level information, not a live location or per-post device.
BREAKING NEWS
The Royal Swedish Academy of Sciences has decided to award the 2025 #NobelPrize in Physics to John Clarke, Michel H. Devoret and John M. Martinis “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
Quantum Physics Corner retweeted
Dear Colleagues,
We are delighted to invite you to join QUANTUMatter 2026 quantumconf.eu/2026/index.ph…
This unique conference brings together the communities of Quantum Matter, Quantum Information, and Quantum Technologies, providing an exceptional platform where ideas converge...
Quantum Physics Corner retweeted
In our last post, we shared the preliminary results of 1-hour bit-flip lifetime for our cats! 🐱
To put that in perspective, that’s millions of times longer than the previous lifetimes achieved on superconducting chips.
But why do long-lived qubits matter for quantum? As Forbes points out, in the classical world, such times are nothing but ordinary…
🔯 In quantum computers, the vast majority of hardware is used to correct errors. By virtually eradicating bit-flips at the chip level, the error problem becomes one-dimensional, drastically reducing the number of qubits needed for error correction.
⏳ Bit-flip lifetime extension is at the core of our strategy to run deep circuits. This is critical for useful applications like simulating molecules in chemistry.
🚀 Long-lived qubits enable the same algorithms with far fewer physical qubits. That makes large-scale quantum computers possible with tens of thousands of qubits, instead of millions!
Check the Forbes article on our result: 👉forbes.com/sites/johnkoetsie…
For a deep-dive, read our blogpost: 👉alice-bob.com/blog/just-out-…
#QuantumComputing #Quantum #Innovation #CatQubits #DeepTech
Quantum Physics Corner retweeted
Caltech physicists have created the largest qubit array ever assembled: 6,100 neutral-atom qubits trapped in a grid by lasers. Previous arrays of this kind contained only hundreds of qubits.
caltech.edu/about/news/calte…
Quantum Physics Corner retweeted
📚 Quantum Mechanics: Elementary Concepts
A concise and rigorous course for beginners — completely free!
🎞️ Video lectures: youtube.com/playlist?list=PL…
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Quantum Physics Corner retweeted
If an apple is magnified to the size of the earth, then the atoms in the apple are approximately the size of the original apple.
— Richard Feynman
Quantum Physics Corner retweeted
Q&A with @UChicago physicist Sid Nagel, who looks the mysteries of coffee stains and other phenomena of everyday life.
quantamagazine.org/finding-b…
Quantum Physics Corner retweeted
🏅 We are excited to announce that #NobelLaureate Serge Haroche will be speaking at this year’s ÖPG/SPG Conference in Vienna!
⚠️ Don't miss this unique opportunity to join us in Vienna from 18–22 August! Registration is open until 1 July.
🔗 More info: oepg-sps-meetingvienna2025.u…
Quantum Physics Corner retweeted
Check out our new idea for how to bring quantum education to everyone:
kickstarter.com/projects/sag…
Quantum Physics Corner retweeted
The lovely animations for the spread of the wavefunction in today's video come from @quant_phys
youtube.com/watch?v=fn56vmLp…
Quantum Physics Corner retweeted
Quantum Mechanics I: Elementary Concepts
Explore the fundamentals of Quantum Mechanics in our comprehensive online course spanning approximately 15 hours.
Topics covered include the wave function, Schrödinger's equation, Born's rule, measurement and the wave function collapse, observables and operators, expectation values, uncertainties, Heisenberg's uncertainty principle, zero-point energy, stationary states, energy quantisation, quantum oscillations, coherent states, unbounded motion, continuous energy spectra, quantum scattering, and tunnelling.
For more info or to enrol, visit: quantphys.com/qm1
Quantum Physics Corner retweeted
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Quantum Physics Corner retweeted
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