iiinova — where your digital self keeps evolving

Théo Lisart-Liebermann @theolisart.bsky.social · 21/05/2025

Today I learned that the measurement problem had a satisfactory interpretation since 2002 within quantum statistical mechanics and WHY THE HELL NOBODY TOLD ME EVER

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Théo Lisart-Liebermann @theolisart.bsky.social · 09/05/2025

This reads like a movie script, props to Vincent for sticking to his guns despite the hierarchy.

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Reposted by Théo Lisart-Liebermann

Julien Gossa @juliengossa.cpesr.fr · 07/05/2025

Le gouvernement : fait des réformes qui renforcent les inégalités Les profs : refusent les réformes Le gouvernement : oblige les profs à quand même les faire Tout le monde : constate que les inégalités augmentent Le gouvernement : accuse les profs en leur affichant une charte

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Théo Lisart-Liebermann @theolisart.bsky.social · 07/05/2025

Another new paper from our group: *Clifford and Non-Clifford Splitting in Quantum Circuits: Applications and ZX-Calculus Detection Procedure* We introduce compilation procedure using the ZX-Calculus to identify Clifford and non-clifford borders in quantum circuits. arxiv.org/abs/2504.16004

arxiv.org

Clifford and Non-Clifford Splitting in Quantum Circuits: Applications and ZX-Calculus Detection Procedure

Classical simulation of quantum circuits is a pivotal part of the quantum computing landscape, specially within the NISQ era, where the constraints imposed by available hardware are unavoidable. The G...

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Théo Lisart-Liebermann @theolisart.bsky.social · 07/05/2025

This is our first paper in a series of two, which tackles the question of trainability of shallow QAOA algorithms. We provide benchmarks for quasi-newton and natural gradient methods, in addition to introducing a simple secant-penalization in BFGS updates [1/2] www.arxiv.org/abs/2504.16518

arxiv.org

Preconditioning Natural and Second Order Gradient Descent in Quantum Optimization: A Performance Benchmark

The optimization of parametric quantum circuits is technically hindered by three major obstacles: the non-convex nature of the objective function, noisy gradient evaluations, and the presence of barre...

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Dulwich Quantum Computing @dulwichquantum.bsky.social · 25/02/2025

Another turn in the Microsoft drama. scottaaronson.blog?p=8669#comme...

Scott Aaronson: Comment #112 February 24th, 2025 at 7:15 pm

Sankar Das Sarma, at University of Maryland, asked me to post the following comment from him:

I have been following the comments in this discussion. As someone who has been involved actively in MZM research since 1999, I can say with some authority that the response from the MSFT people has been reasonable and sound. The experimental physics here is not binary, such as ‘yes here are the MZMs and the topological qubit’ and ‘no, there are no MZMs and no topological qubit’. It is much more nuanced. It is a process with many steps. It is engineering. For example, ‘zero energy’ immediately leads to the question: ‘how close to zero energy is it correct to call the object a Majorana zero mode?’ There is no yes/no unique answer to this question as it depends crucially on all the engineering details. In real devices, nothing can be zero energy! Microsoft has made a disruptive advance, and we should all be grateful to them for putting their considerable resources to an abstract physics/math/CS topic creating the foundation for future TQC. I simply do not understand the vehement negativity expressed by some in these comments. This is not a simple problem where a binary yes/no paradigm applies. I know as I have been at it for more than 25 years.

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Théo Lisart-Liebermann @theolisart.bsky.social · 20/01/2025

This is a bit of a personal admission: I thought for around one year that LiDAR systems were named after prof. Daniel Lidar. There I said it.

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Anubhav Jain @anubhavj480.bsky.social · 04/12/2024

Have you ever wondered why diffusion models memorize and all initializations lead to the same training sample? As we show, this is because like in dynamic systems, the memorized sample acts as an attractor and a corresponding attraction basin is formed in the denoising trajectory.

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Théo Lisart-Liebermann @theolisart.bsky.social · 03/12/2024

PRIF and TU Darmstadt are hiring for cross-disciplinary positions for PhD and postdocs in arms control, mainly in nuclear engineering. RB appreciated ! www.cntrarmscontrol.org/news/snd-vac...

cntrarmscontrol.org

SND Vacancies | CNTR

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Will Kinney @wkcosmo.bsky.social · 29/11/2024

If the universe started out in a pure quantum state, how is anything in a mixed state now?

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Rishi Sreedhar @rishisr33dhar.bsky.social · 25/11/2024

Hey #Quantumsky 👋🏾 This is an attempt at indexing the growing quantum community here on Bluesky. Please let me know if you'd like to be added to the list. Genuinely happy to see what looks like a successful migration from the birdsite 😄 go.bsky.app/VHXg1yi

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