Marco Cerezo

This will be an awesome conference in an awesome place!! Please consider submitting an abstract!

New preprint: “Matchgate synthesis via Clifford matchgates and T gates.” We propose a new framework for matchgate synthesis: compiling these unitaries using only matchgates.

arxiv.org/abs/2602.05425

Los Alamos forms quantum computing-focused research center | LANL Los Alamos National Lab forms quantum computing center, consolidating diverse research to drive innovation in national security, algorithms, and workforce development.

I am extremely excited to share our latest news: LANL formed a Center for Quantum Computing!!

This Center will enhance our quantum workforce via co-location, and will even host the Summer School! So, if you applied for it, you might be the first cohort in the Center!

www.lanl.gov/media/news/0...

This method can be combined with ANY local compiler, so any improvement therein, becomes an improvement for us too!

We use classical AI [Reinforcement Learning] to help quantum circuits: learn local rewrites before synthesis so compilers spit out lower T-count (T gates are $$$ in FTQC). Up to ~20% T reductions, no extra approx error.

Quantum Circuit Pre-Synthesis: Learning Local Edits to Reduce $T$-count Compiling quantum circuits into Clifford+$T$ gates is a central task for fault-tolerant quantum computing using stabilizer codes. In the near term, $T$ gates will dominate the cost of fault tolerant i...

New paper out! 🎆

In collaboration with University of Udine 🇮🇹🤝

arxiv.org/abs/2601.19738

Huge props to my colleagues Daniele Lizzio Bosco, Lukasz Cincio and Giuseppe Serra

Quantum Computing and Early Fault-Tolerant Simulations at Los Alamos National Laboratory Los Alamos National Laboratory is Hiring! Search available jobs or submit your resume now by visiting this link. Please share with anyone you feel would be a great fit.

We still have open postdoc positions in our group!

Looking for someone with expertise in quantum computing, tensor networks, Monte Carlo and other methods to simulate quantum many-body systems!

Shares appreciates!

Apply here:

lanl.jobs/search/jobde...

Genuine multipartite Rains entanglement We introduce the genuine multipartite Rains entanglement (GMRE) as a measure of genuine multipartite entanglement that can be computed using semi-definite programming. Similar to the Rains relative en...

Joint work "Genuine multipartite Rains entanglement" w/ Hailey Murray, Sagnik Bhattacharya, M. Cerezo @mvscerezo.bsky.social, Liuke Lyu now available on arXiv:

arxiv.org/abs/2601.09590

We establish a genuine multipartite generalization of the famous Rains entanglement measure for bipartite states

I don’t fully know what this duality means yet in a deeper conceptual sense, and I’d genuinely love to hear how others interpret it. Is it “just” representation-theoretic bookkeeping… or is it telling us something more structural about free vs. typical states ?

Thoughts welcomed!!

And then there’s the part that sounds like I’m pretending to be wise at a blackboard: we uncover an “s-duality” relating the phase-space spectra of free states and typical Haar-random (very resourceful) states via a shift in s.

s = −1 → low-pass / smoothing (keeps the easy/free symmetry content, washes out the spiky, resourceful stuff)
s = 0 → no filter (the spectrum is carried over as-is)
s = +1 → high-pass / edge detector (suppresses the “free” modes and highlights the highly resourceful ones)

The punchline: quantum phase space isn’t just a pretty picture of your quantum state… it’s basically a signal-processing pipeline with an actual “EQ knob”.

We show that the Stratonovich–Weyl phase-space (tuned by the Cahill–Glauber parameter s) acts like a group-Fourier filter:

Group Fourier filtering of quantum resources in quantum phase space Recently, it has been shown that group Fourier analysis of quantum states, i.e., decomposing them into the irreducible representations (irreps) of a symmetry group, enables new ways to characterize th...

I am very excited to share my latest paper from the quantum computing summer arxiv.org/abs/2601.14225

In collaboration w/ Luke Coffman, @nahuelldiaz.bsky.social , @martinlaroo.bsky.social , and the one and only Maria Shuld from Xanadu

🎆As the year ends, I want to remind everyone that our summer school applications are open!

Please apply/encourage your students to apply here:

academicjobsonline.org/ajo/jobs/31108

We also have a handshake link too🤝 :

app.joinhandshake.com/emp/jobs/105...

Shares appreciated!

A Primer on Quantum Machine Learning Quantum machine learning (QML) is a computational paradigm that seeks to apply quantum-mechanical resources to solve learning problems. As such, the goal of this framework is to leverage quantum proce...

I am extremely proud of this review article to Quantum Machine Learning 🌟🌟

arxiv.org/abs/2511.15969

Our goal was to give a bird's eye view of QML, from quantum PAC, to Linear Algebraic approaches and variational methods.

Huge thanks to my co author Su Yeon Chang@

This was a really cool project to work on! Matt is an amazing researcher, go follow him! Also, he's on the job market for a postdoc 😋😉

Applications for the LANL quantum computing summer school are now open!

I recently got asked about the most important turning points of my career and without hesistation said the LANL summer school.

The first 1/3 of this video is me rambling about why it was so special: youtu.be/XjkHmtr_IT0?...

🚨Applications for LANL's 2026 Quantum Computing Summer School are open!

Please apply here 👇

academicjobsonline.org/ajo/jobs/31108

Reposts appreciated!

Deadline to Apply is January 11th 2026. Still, you should go and apply now!

Quantum Computing and Early Fault-Tolerant Simulations at Los Alamos National Laboratory Los Alamos National Laboratory is Hiring! Search available jobs or submit your resume now by visiting this link. Please share with anyone you feel would be a great fit.

Just a friendly reminder that there are currently two ads for postdocs at Los Alamos National Laboratory:

Quantum Simulations of fermionic systems apply here: lanl.jobs/search/jobde...

Quantum Simulations for nuclear physics apply here: lanl.jobs/search/jobde...

Shares appreciated

Quantum Computing and Early Fault-Tolerant Simulations at Los Alamos National Laboratory Los Alamos National Laboratory is Hiring! Search available jobs or submit your resume now by visiting this link. Please share with anyone you feel would be a great fit.

Our group is looking to hire postdocs to work at the intersection of quantum computing, quantum algorithms, quantum machine learning, simulation of many-body quantum systems and early-fault tolerant quantum computing

Apply here:
lanl.jobs/search/jobde...

Reposts appreciated!

2025 UMD Quantum postdoc job thread.

We start with the Quantum Optics Fellowship, intended for AMO and QI. Anyone who would have applied for the JQI Fellowship should apply to this one. academicjobsonline.org/ajo/fellowsh...

Life Goal Achieved: I have so many arxiv tabs open that when opening a new one, I am now prompted to complete captchas.

No payment, no waiving of fees, it's like getting a sticker on your CV I guess 🤷‍♂️

I got an invitation for this, but seems like a ton of work 😅

Hey quantum bsky!

Does any have any experience with becoming a Trusted Reviewer for Springer? Seems like the commitment is quite high for getting that title; you need to review one paper a month for them.

Interested in hearing anyone's thoughts on this.

I find myself in a barren plateaud landscape.

I've used Monument Valley so much as an analogy for BPs, that I figured I should finally pay this beautiful place a visit!

Thanks again to my wonderful co-authors Martin Larocca, @dgarciamartin.bsky.social, @nahuelldiaz.bsky.social, Paolo Braccia, Enrico Fontana, @quantummanuel.bsky.social, Pablo Bermejo, @aroosaijaz.bsky.social @supanut-thanasilp.bsky.social, Eric Anschuetz and @qzoeholmes.bsky.social

As always, the works is not meant to be a strict statement (only a Sith deals in absolutes), but we want to engage our community in an open discussions regarding the (many) limitations of variational methods and how to solve these issues!

Does provable absence of barren plateaus imply classical simulability? - Nature Communications There has been growing evidence that strategies to circumvent the barren plateau problem in variational quantum computing might also kill potential quantum advantages. In this Perspective, the authors...

I am so, so happy to see this article published as a perspective in Nature Communications:

www.nature.com/articles/s41...

More than the paper itself, I thoroughly enjoyed chatting with all my co-authors on the implications of the absence of BPs ~ classical simulability connection

This week is my 10 year anniversary of my first paper posted to arxiv, holy xow, how time flies!!