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Victor V. Albert @vva.bsky.social · 1d

Every time I interact with Michel, he has some deep insight that I understand only years later. Maybe it is not completely fleshed out technically but it is always on point. It reminded me of other winners in the past. Well deserved!

Rod Van Meter @rdvquantum.bsky.social · 1d

Nobel in Physics to Clarke, Devoret and Martinis! Congratulations to them!

Citation says for work in the 1980s on quantized current.

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Victor V. Albert @vva.bsky.social · 12d

A new proposal imposes significant restrictions on F-1 and J-1 visas, which would sharply curtail foreign talent flow to US grad schools. Both UMD Physics and umiacs are urging faculty to comment, so please consider. Comment period expires Sept 29. www.federalregister.gov/documents/20...

Establishing a Fixed Time Period of Admission and an Extension of Stay Procedure for Nonimmigrant Academic Students, Exchange Visitors, and Representatives of Foreign Information Media

Unlike most nonimmigrant classifications, which are admitted for a fixed time period, aliens in the F (academic student), J (exchange visitor), and most I (representatives of foreign information media...

www.federalregister.gov

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Reposted by Victor V. Albert

anthony-leverrier.bsky.social @anthony-leverrier.bsky.social · 19d

This is interesting and surprising: some Clifford gates cannot be implemented arbitrarily well on arbitrarily good approximate GKP states with Gaussian operations!

Nice work by Brenner, Diaz and Koenig
arxiv.org/abs/2509.14658

Cat qubits (and generalizations) for the win, I guess
;-)

Composable logical gate error in approximate quantum error correction: reexamining gate implementations in Gottesman-Kitaev-Preskill codes

Quantifying the accuracy of logical gates is paramount in approximate error correction, where perfect implementations are often unachievable with the available set of physical operations. To this end,...

arxiv.org

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Victor V. Albert @vva.bsky.social · 28d

David Gross (Cologne) talks about SDP based quantum algorithms. Take home: hidden constants matter. Even if there is an asymptotic speedup in your favorite use case, it may still not be in the parameter regime that is relevant to the problem size you're interested in.

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Reposted by Victor V. Albert

Bob Coecke @coecke.bsky.social · Sep 8

Nobel Prize Laureate Roger Penrose, Yvette Fuentes, and myself, request your help in order to save an archive of incredible scientific and historical value. Please raise awareness by *sharing*, or *contribute*:

www.crowdfunder.co.uk/p/roger-penr...

Roger Penrose & Friends Appeal for Unique Archive

To digitise and restore the worlds largest collection of audio and visual recordings within the scientific community, spanning over 50 years

www.crowdfunder.co.uk

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Victor V. Albert @vva.bsky.social · Sep 8

Do you have examples? Maybe that's how I can finally learn algebraic geometry.

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Victor V. Albert @vva.bsky.social · Sep 4

I had another fun opportunity to talk about our quantum formulation of the space of molecular orientations at Sorbonne University. Great workshop! Organized by Ugo Boscain, Christiane Koch, Mario Sigalotti, and Dominique Sugny. zenodo.org/records/1705...

Quantum theory of molecular orientation

zenodo.org

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Victor V. Albert @vva.bsky.social · Aug 29

@ox.ac.uk debate by Simon Benjamin & Bálint Koczor, host @mariaviolaris.bsky.social. Motion: "quantum computers will have a greater impact on our lives than conventional ones." Terry Rudolph, Nathan Wiebe, Elham Kashefi vs @jenseisert.bsky.social, @graemesmith.bsky.social, me. Motion defeated 94-72.

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Victor V. Albert @vva.bsky.social · Aug 13

"Every American taxpayer is a silent shareholder in that success. If we walk away now, we lose not just future breakthroughs but also what we have already earned." thehill.com/opinion/tech...

Congress wants to cut the smartest investment taxpayers ever made

Virtually every smartphone on the planet runs on a chip paid for by American taxpayers — a chip that I helped invent. Now Congress is moving to cut funding for the National Science Foundation that …

thehill.com

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Reposted by Victor V. Albert

Error Correction Zoo @eczoo.bsky.social · Jul 18

We are now at 999 codes. What should be our 1000th? If we pick yours, we will feature you in a post about the code.

Comment, reply, message, and spread the word.

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Reposted by Victor V. Albert

John Watrous @johnwatrous.bsky.social · Jul 16

After 3 1/2 years of work my course on quantum computing is finally finished — the "Director's Cut" of Understanding Quantum Information and Computation is now available.

arxiv.org/abs/2507.11536

Understanding Quantum Information and Computation

This is a course on the theory of quantum computing. It consists of 16 lessons, each with a video and written component, covering the basics of quantum information, quantum algorithms (including query...

arxiv.org

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Victor V. Albert @vva.bsky.social · Jul 11

Thanks, you are correct.

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Victor V. Albert @vva.bsky.social · Jul 11

Corrected paper: arxiv.org/abs/2506.19232

Future of Quantum Computing

On Tuesday 26th November 2024, four discussants participated in a moderated virtual panel titled Future of Quantum Computing as one session of the 8th International Conference on Quantum Techniques in...

arxiv.org

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Victor V. Albert @vva.bsky.social · Jul 11

"For quantum computers to get significant speed-up, they need to take advantage of special structure. They do not offer significant speed-up for unstructured problems, so we do not expect to be able to just throw them at anything." Andrew Childs arxiv.org/pdf/2408.16175

arxiv.org

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Victor V. Albert @vva.bsky.social · Jul 3

From Barbara Terhal: On July 17-18 a small symposium "Dreams of Quantum" will be held in honor of David DiVincenzo's work and retirement at RWTH Aachen. The event can be attended by all via a Zoom link. www.quantuminfo.physik.rwth-aachen.de/cms/~bmmwed

Symposium | Institut für Quanteninformation | RWTH Aachen University | DE

July 17-18, 2025 Ford Saal, Super C RWTH Aachen University

www.quantuminfo.physik.rwth-aachen.de

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Victor V. Albert @vva.bsky.social · Jun 26

"We're likely to experience a DeepSeek moment in quantum." www.youtube.com/watch?v=dqPw...

Preparing for the Quantum Age: When Cryptography Breaks

YouTube video by GOP Oversight

www.youtube.com

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Victor V. Albert @vva.bsky.social · Jun 26

Lots of good Lie group stuff in this post by @dwierichs.bsky.social, as it related to circuit compilation: pennylane.ai/qml/demos/tu...

The KAK decomposition | PennyLane Demos

Learn about the KAK decomposition and how it powers circuit decompositions.

pennylane.ai

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Victor V. Albert @vva.bsky.social · Jun 14

"for U.S. developed nanotechnology to compete in the current era, the United States must rethink the entirety of its ... framework, within which nanotechnology knowledge is created, innovation is protected, and products are commercialized by industry." nap.nationalacademies.org/catalog/2572...

A Quadrennial Review of the National Nanotechnology Initiative: Nanoscience, Applications, and Commercialization

Read online, download a free PDF, or order a copy in print or as an eBook.

nap.nationalacademies.org

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Victor V. Albert @vva.bsky.social · Jun 9

The integer eigenvalues of angular momentum in a 2D space with periodic boundary conditions are scaled by the radius (for sufficiently large radii). Turns out there is a continuum of angular momenta! arxiv.org/abs/2506.03254

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Reposted by Victor V. Albert

Frank Verstraete @fverstraete.bsky.social · Jun 8

Happy to see our book "Why Nobody Understands Quantum Physics" published in English www.panmacmillan.com/authors/fran.... Unlike other popular science books, we explain quantum and its applications in the way working physicists use and understand them, without shying away from the many-body problem.

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Victor V. Albert @vva.bsky.social · Jun 5

"AIP projects a 13% drop in first-year enrollment in fall 2025 compared with fall 2024. ... One in six of the responding chairs reported that at least one faculty member in the department has had their federal grant funding reduced or canceled." digital.physicstoday.org/physicstoday...

Physics Today - Physics, astronomy graduate admissions in the US expected to shrink amid funding uncertainty

The predicted decrease is larger than pandemic-era disruptions, according to a survey of university departments.

digital.physicstoday.org

Victor V. Albert @vva.bsky.social · May 2

"Skinny" US budget out today w/ many cuts to specific programs + NSF now at 15% overhead. Silver lining: "[
NSF] Funding for Artificial Intelligence and quantum information sciences research is maintained at
current levels."

Dan Garisto @dangaristo.bsky.social · May 2

Skinny budget out. Looks bad for science. www.whitehouse.gov/wp-content/u...

www.whitehouse.gov

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Victor V. Albert @vva.bsky.social · Mar 22

Absolutely maximal entangled states are maximally entangled along any bipartition. We extend this to continuous variables and show this property is generic among infinitely squeezed states. In contrast, it doesn't exist for states on more than six qubits. arxiv.org/abs/2503.15698

Most continuous-variable cluster states are too entangled to be useless

We define absolutely maximal entanglement (AME) in continuous-variable (CV) systems and show that, in stark contrast to qudit systems, this entanglement is generic among infinitely squeezed Gaussian s...

arxiv.org

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Victor V. Albert @vva.bsky.social · Feb 24

This broad overview complements a deeper dive into stabilizer and subsystem codes at the 2023 Boulder lectures. Any omitted references can be found in
@eczoo.bsky.social. Boulder slides are here: zenodo.org/records/1491...

2023 Boulder Summer School Lectures - Introduction to Quantum Error Correction

zenodo.org

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Victor V. Albert @vva.bsky.social · Feb 24

Here are slides for my @qip2025.bsky.social tutorial on quantum error correction. doi.org/10.5281/zeno...

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