Charles Moussa

🚀 𝗪𝗲’𝗿𝗲 𝗟𝗜𝗩𝗘!
The wait is over — the 𝟱𝘁𝗵 𝗮𝗻𝗻𝘂𝗮𝗹 𝘂𝗻𝗶𝘁𝗮𝗿𝘆𝗛𝗔𝗖𝗞 has officially begun!
💻 Join us at buff.ly/wv8LDg3 for a bug-bounty-style hackathon to improve open-source quantum tools.
Open to all skill levels—earn rewards & gain experience!

Thanks to Pasqal for supporting this work!

Paper link: arxiv.org/abs/2505.18090

In many #QML applications, a key ingredient is to extrapolate derivatives from #quantum circuits.
We explored how to reduce the cost of a key protocol (the Parameter Shift Rule, PSR) in realistic analog hardware cases, demonstrating ~10 to ~1000x savings even on small instances!

Also thanks to @pasqal.bsky.social for supporting

GitHub - pasqal-io/pyqtorch: PyTorch-based state vector simulator PyTorch-based state vector simulator. Contribute to pasqal-io/pyqtorch development by creating an account on GitHub.

pyqtorch repository: github.com/pasqal-io/py...
pyqtorch documentation: pasqal-io.github.io/pyqtorch/

This year, PyQTorch (a #pytorch based #quantum simulator) is participating as a #hackathon project at the #unitaryHACK25 organized by @unitary.foundation ! It goes from May 28th until June 11th with bounties for contributing on #opensource projects. Check it out!

unitaryHACK site: unitaryhack.dev

Myths around quantum computation before full fault tolerance: What no-go theorems rule out and what they don't In this perspective article, we revisit and critically evaluate prevailing viewpoints on the capabilities and limitations of near-term quantum computing and its potential transition toward fully fault...

To reach some consensus about the prospects of near-term (late nisq and early fault tolerant) quantum computing, we had a 3-day discussion event (“Quantum Now”) in Lapland with both optimists and pessimists. This continued at SeeQA 2024 in Oxford. See our conclusions here arxiv.org/abs/2501.05694

🖊️ @qzoeholmes.bsky.social and I are editing an issue for Quantum Science and Technology journal ow.ly/fR1W50Uu1av
We want
- (Wacky) new ideas for variational algorithms
- Honest benchmarks, if you show it don't work, we want it (be thorough)
- Studies on classical simulability
- Power of data in QML

Hybrid quantum-classical algorithms for approximate graph coloring We show how to apply the recursive quantum approximate optimization algorithm (RQAOA) to MAX-$k$-CUT, the problem of finding an approximate $k$-vertex coloring of a graph. We compare this proposal to ...

Also worth looking a few works from Bravyi on recursive QAOA. For instance arxiv.org/abs/2011.13420, where they had good results on MAX-k-CUT using classical simulation of level-1 rQAOA against the best
known generic classical algorithm based on rounding an SDP relaxation.

Tabu-Driven Quantum Neighborhood Samplers Combinatorial optimization is an important application targeted by quantum computing. However, near-term hardware constraints make quantum algorithms unlikely to be competitive when compared to high-p...

@mvscerezo.bsky.social I worked on a quantum-enhanced version of a heuristic (tabu search) where QAOA is used at a local sampler, from which I could obtain in principle a gain in QUBO problems. There are probably a few other similar works. link.springer.com/chapter/10.1...

1. I think the QAOA algorithm is quite useful. Especially it can exhibit a form of quantum supremacy (Quantum supremacy through the quantum approximate optimization algorithm, Farhi and Harrow), which can be quite useful when developing heuristics using it as a sampler.

🚨Applications for LANL's 2025 Quantum Computing Summer School are open!

Please apply here
👇
lanl-summer-school-programs.wizehive.app/program/quan...

Reposts appreciated!

Agorize Take on the challenge with Pasqal and drive real change! Use quantum AI to address key sustainability issues and develop impactful solutions for a resilient future. Are you ready to make an impact?

🚀 Big news! Pasqal’s second global #hackathon is here! Join the "Blaise Pascal Quantum Challenge" to create #QuantumAi
solutions for critical #sustainability challenges and win €15,000! 8 weeks, team collaborations, virtual masterclasses & more.

www.agorize.com/en/challenge...

Submissions for QCTiP 2025 are now open.

a black and white drawing of a hand holding a hype button ALT: a black and white drawing of a hand holding a hype button

#QTML2025 Announced for Singapore!