Marco Cerezo

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!!

forgot @nahuelldiaz.bsky.social on the list above #Shame

Hey Mark! Great question, we jump from local unitaries to SLOCC, as those are based on underlying Lie groups.

To be honest I have always found LOCC extremely confusion (separable a little less so), but making the leap of faith straight to SLOCC was the saving grace for us.

Huge propos to my co-authors Andy Deneris, Paolo Braccia, Pablo Bermejo and @antonioannamele.bsky.social !

We only scratched the surface of a cross-examination of a state’s resourcefulness, but our work revealed that resource is truly in the eye of the (QRT) beholder!

I can't really elaborate more than what the title already says, we take free states of one theory, we see how resourceful they are in another one.

Its a simple idea which leads to cool results, and the paper is packed with Haar integrals and numerics!

Characterizing quantum resourcefulness via group-Fourier decompositions In this work we present a general framework for studying the resourcefulness in pure states for quantum resource theories (QRTs) whose free operations arise from the unitary representation of a group....

We recently posted 2 works on quantum resource theories: arxiv.org/abs/2506.19696, arxiv.org/abs/2507.10851

👂Huh? Yall want more? We got you covered with a NEW work

Analyzing the free states of one quantum resource theory as resource states of another

arxiv.org/abs/2507.11793

Also, pretty pictures are pretty

I am incredibly excited by this paper!

We believe it opens up some interesting new directions to study resource non-increasing channels in quantum resource theories!

So What Do We Know QC To Be Good For?
- Simulating quantum physics and chemistry
- Breaking current public-key encryption (RSA, DH, ECC)
- Eventually, modest (square-root) speedups from Grover
- We’ll have to get lucky for most other applications!
(The world has been systemically lied to about this)

Huge thanks to my co-authors Pablo Bermejo, Paolo Braccia, @antonioannamele.bsky.social , @nahuelldiaz.bsky.social, Andrew E. Deneris and Martin Larocca

Bonus: certain small-irrep purities act as resourcefulness witnesses (they peak only for free states), and truncating high-irrep components leads to notions of state compressibility—think quantum data compression! 🗜️

Indeed, low resource state are VERY compressible!

We test universality across quantum resource theories: entanglement (bi- & multipartite), fermionic Gaussianity, spin coherence & Clifford stabilizerness—no resource theory left behind! 🌐

Across all of these we find:

Low/high resource = live in small/high dimensional irreps

Central to our framework are GFD purities—the norms of those projections. They reveal a spectrum: low-resource states live in small-dimensional irreps, while high-resource states spread into more & higher-dimensional irreps, mirroring classical harmonic analysis.

We introduce 👉group-Fourier decompositions (GFDs)👈 for quantum resource theories: projecting pure states onto the irreducible representations of the free-operation group to fingerprint resourcefulness & complexity.