@MartinLaroo

Staff Scientist at Los Alamos National Laboratory --Quantum Algorithms, Quantum Machine Learning.

 Los Alamos, NM
Joined March 2011
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How many samples from an unknown n-mode η-particle fermionic state are needed to power a shadows scheme? In a new paper we substantially reduce SOTA estimates, check arxiv.org/pdf/2606.27254
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Finally, we note the scheme is computationally efficient, with post-processing costs O(n η²) and O(n² η) for generic dense Slaters and quadratic observables, respectively.
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Kudos to my collabs @MvsCerezo and Max West!
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New paper out: Classical Shadows with Arbitrary Group Representations (see arxiv.org/abs/2604.01429) 1/11

Classical shadows with arbitrary group representations

Classical shadows (CS) has recently emerged as an important framework to efficiently predict properties of an unknown quantum state. A common strategy in CS protocols is to parametrize the basis...

arxiv.org
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Although the results presented here constitute a signifi- cant step towards a unified understanding of group-based shadows, the story is not yet complete. Some reps fail to admit NDCEs (e.g. many Sn irreps), and an open question remains: do centralizing bases always exist? 10/11
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Thanks to my wonderful collaborators @MvsCerezo @dmitry_grinko @fredericsauv Nathan Killoran, David Wierichs, Roy Forestano, Aniruddha Sen, and Max West! 11/11
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Martin Larocca retweeted
Marco Cerezo@MvsCerezoMar 25
New paper out!! 🥳😄 Last Friday we uploaded our latest preprint to the arXiv: "The commutant of fermionic Gaussian unitaries" Amazing collaboration with @TheImPolster @Nahuel_L_Diaz @MartinLaroo and @DiegoGM_quantum ! Thread 👇 arxiv.org/abs/2603.19210

The commutant of fermionic Gaussian unitaries

In this work, we characterize the $t$-th order commutants of fermionic Gaussian unitaries and of their particle-preserving subgroup acting on $n$ fermionic modes. These commutants govern Haar...

arxiv.org
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Martin Larocca retweeted
Greta Panova@GretaPanovaMar 24
Human insight is still a thing: over the last few years many computing resources were thrown towards the Merzon-Smirnov conjecture on maximal Schubert polynomials, including DeepMind's FunSearch. In the end it fell to a human-generated targeted check: arxiv.org/abs/2603.20104

Computation and sampling for Schubert specializations

We present computational results on principal specializations $\mathfrak{S}_w(1^n)$ of Schubert polynomials, which count reduced pipe dreams and reduced bumpless pipe dreams (RBPD). We find the...

arxiv.org
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A new hub for quantum computing 🏡 The Lab’s new Center for Quantum Computing, opening in downtown Los Alamos, unites dozens of quantum researchers under one roof to strengthen national security, advance quantum science and mentor the future workforce. 👉 ow.ly/sQi750Y8vVU
Two people discuss complex equations written on a large chalkboard in a classroom setting.

ALT Two people discuss complex equations written on a large chalkboard in a classroom setting.

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Martin Larocca retweeted
Marco Cerezo@MvsCerezo22 Dec 2025
🎆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/j… We also have a handshake link too🤝 : app.joinhandshake.com/emp/jo… Shares appreciated!
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