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Reposted by Diego García-Martín

Juan José García-Ripoll @jjgarciaripoll.bsky.social · 2d

Researchers from our group, Luca Tagliacozzo and Diego Porras, are offering two fully funded PhD positions (FPI grants) as part of their separate projects. Come and join us in CSIC!

Información y Tecnologías Cuánticas en España @qipcspain.bsky.social · 3d

PhD position. PhD on quantum dynamics at CSIC, IFF https://www.cuantica2025.es/job-market

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Reposted by Diego García-Martín

Quinfog Group at IFF-CSIC @queen-of-fog.bsky.social · 10d

Two PhD Opportunities at QUINFOG #quantumjobs [🌎]

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Reposted by Diego García-Martín

Alexander Schuckert @schuckert.org · 19d

When you realize the whole yearly budget for Quantum journal is equal to 8 Nature APCs - and they don't even wreck your paper in proof stage because...there is none

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Reposted by Diego García-Martín

Mark M. Wilde @markwilde.bsky.social · 24d

The accepted papers for QTML 2025 are listed here:

qtml2025.cqt.sg/accepted-pap...

#QTML2025

Accepted Papers - Quantum Techniques in Machine Learning (QTML)

Contratulations to authors with talks accepted for the Quantum Techniques in Machine Learning 2025 conference in Singapore

qtml2025.cqt.sg

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Reposted by Diego García-Martín

Marco Cerezo @mvscerezo.bsky.social · Aug 26

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

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...

www.nature.com

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Reposted by Diego García-Martín

Juan José García-Ripoll @jjgarciaripoll.bsky.social · Aug 6

IBM is looking for a quantum developer advocate to work in Spain in the Barcelona región
ibmglobal.avature.net/en_US/career...

IBM Quantum Developer Advocate EMEA

ibmglobal.avature.net

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Reposted by Diego García-Martín

kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · Jul 27

#Quantum #QIP2025
The team @qip2025.bsky.social has uploaded the QIPv2025 talks

www.youtube.com/@QIP2025

Enjoy rewatching your favorites!

QIP2025

www.youtube.com

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Reposted by Diego García-Martín

Markus Heinrich @markusheinrich.bsky.social · Jul 1

Some statistical features of Haar unitaries can be well approximated in log depth, exponentially faster than previously thought. We give evidence that this is a 'truly quantum' effect by deriving linear lower bounds for orthogonal, Clifford, symplectic, matchgate groups
scirate.com/arxiv/2506.2...

Will it glue? On short-depth designs beyond the unitary group

We provide a range of results on several groups of broad interest in quantum information science: the Clifford group, the orthogonal group, the unitary symplectic groups, and the matchgate group. For ...

scirate.com

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Reposted by Diego García-Martín

Quantum Spain @quantumspain-project.es · Jun 30

📢QSpain convoca el Premio a la Mejor Tesis en Computación Cuántica!
📍 Tesis defendidas en España antes del 30/06/25
🏆 Premios: diploma + presentación invitada en #ICE10
✈️ Viaje incluido
📅 Presenta tu candidatura hasta el 15/07/25
Más info: shorturl.at/LpO3x

PREMIO QSPAIN A LA MEJOR TESIS DOCTORAL EN COMPUTACIÓN CUÁNTICA |

Sé parte del futuro de la computación cuántica en España

shorturl.at

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Reposted by Diego García-Martín

Nahuel L Diaz @nahuelldiaz.bsky.social · Jun 30

Great conference at Genoa, Italy about "Time in Quantum Theory" (TIQT)😀

I'll use the ocasion to share my related seminar doi.org/10.52843/cas... on our recent paper "Path Integrals from spacetime quantum actions" (doi.org/10.1016/j.ao...).

The topic? Unifying "Quantum time" and Feynman's approach

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Reposted by Diego García-Martín

Korbinian Kottmann @qottmann.bsky.social · Jun 26

I'm giving an (online) talk next Monday. Be there or be square 🟥

www.thewiser.org/agenda

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Reposted by Diego García-Martín

Marco Cerezo @mvscerezo.bsky.social · Jun 25

🚨Excited to share our new paper "Characterizing quantum resourcefulness via group-Fourier decompositions" from last year's LANL Quantum Computing summer School📘 arxiv.org/abs/2506.19696 !

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....

arxiv.org

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Reposted by Diego García-Martín

martinlaroo.bsky.social @martinlaroo.bsky.social · Jun 23

How fast can quantum circuits compile group designs?Recent work arxiv.org/abs/2407.07754 showed that designs over the n-qubit unitary group can be compiled in logarithmic-in-n depth. Can we similarly build short-depth designs over other groups? In our new paper arxiv.org/abs/2506.16005 we answer no.

No-go theorems for sublinear-depth group designs

Constructing ensembles of circuits which efficiently approximate the Haar measure over various groups is a long-standing and fundamental problem in quantum information theory. Recently it was shown th...

arxiv.org

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Reposted by Diego García-Martín

Maris Ozols @marisozols.bsky.social · Jun 11

Open position at QuSoft / University of Amsterdam: Assistant Professor in Quantum Computing and Simulation for Quantum Chemistry and Materials
qusoft.org/qusoft-vacan...
Deadline: 14 July 2025

QUSOFT Vacancies – Qusoft

qusoft.org

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Reposted by Diego García-Martín

Marco Cerezo @mvscerezo.bsky.social · Jun 6

This is an extremely cool paper from our summer school! If you missed it, and want the tldr, LANL recently put out a press release on our work!!

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

Again, huge props to my co authors!

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Reposted by Diego García-Martín

Marco Cerezo @mvscerezo.bsky.social · Jun 8

I will be in Madrid in Sept 15 to 19th for the Entangle This VI Conference!

Given that I'll be traveling across the pond I'd love to take that opportunity to visit some other local group in Spain!

Let me know if you're interested and I can plan a trip :)

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Diego García-Martín @dgarciamartin.bsky.social · Jun 3

In summary:

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Diego García-Martín @dgarciamartin.bsky.social · Jun 3

We also find random Clifford FLO circuits (which are a FLO 3-design), with a provably-optimal number of gates

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Diego García-Martín @dgarciamartin.bsky.social · Jun 3

I.e. we provide appropriate distributions for the gates of n-qubit parametrized circuits with an optimal down-to-the-constant factor depth, gate count, and classical computation overhead

In contrast, previous approaches incur unnecessary O(n^3) classical compilation costs, or have suboptimal depths

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Diego García-Martín @dgarciamartin.bsky.social · Jun 3

In our paper, we provide quantum circuits to *optimally* sample both active and passive Haar random FLO directly on quantum hardware.

(The angles are sampled according to sine powers, indicated by the circled numbers in the picture)

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Diego García-Martín @dgarciamartin.bsky.social · Jun 3

Unitary fermionic linear optics (FLO), or matchgate circuits, are a well studied class of quantum circuits, with many known applications.

In particular, sampling random FLO enables applications such as fermionic classical shadows, random circuit sampling or randomized benchmarking 💫

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Diego García-Martín @dgarciamartin.bsky.social · Jun 3

New paper out!! 🎉🎉

"Optimal Haar random fermionic linear optics circuits"

Super fun collaboration with @impolster.bsky.social @nahuelldiaz.bsky.social @martinlaroo.bsky.social and @mvscerezo.bsky.social !

Thread 👇

arxiv.org/abs/2505.24212

Optimal Haar random fermionic linear optics circuits

Sampling unitary Fermionic Linear Optics (FLO), or matchgate circuits, has become a fundamental tool in quantum information. Such capability enables a large number of applications ranging from randomi...

arxiv.org

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Reposted by Diego García-Martín

Quantum Spain @quantumspain-project.es · May 12

⚛️ La @rsef-esp.bsky.social convoca la II Edición del Premio GEITC a la Mejor Tesis Doctoral en Información y Tecnologías Cuánticas. ¿Defendiste tu tesis doctoral en España en 2024 en este campo? ¡Esta es tu oportunidad! 🏆 Más info: www.cuantica2025.es/premio-geitc...

Premio GEITC a la mejor tesis doctoral en información y tecnologías cuánticas - Cuantica2025

El Grupo Especializado de Información y Tecnologías Cuánticas de la Real Sociedad Española de Física, con el apoyo de la Red de Información y Tecnologías Cuánticas en España, convoca la II Edición del...

www.cuantica2025.es

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Reposted by Diego García-Martín

Antonio Anna Mele @antonioannamele.bsky.social · Apr 17

🧵 Super excited to finally share our new paper 🎉

Together with the dream team- Lennart Bittel,
@jenseisert.bsky.social, Lorenzo Leone, @sfeoliviero.bsky.social - we present a full theory of the Clifford commutant ⚡, a central object in quantum information. ⚛️

📄 arxiv.org/abs/2504.12263

A complete theory of the Clifford commutant

The Clifford group plays a central role in quantum information science. It is the building block for many error-correcting schemes and matches the first three moments of the Haar measure over the unit...

arxiv.org

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Reposted by Diego García-Martín

Información y Tecnologías Cuánticas en España @qipcspain.bsky.social · Mar 28

PhD position. PhD position in Quantum Algorithms for High-Energy Physics at Institute for Theoretical Physics (UAM-CSIC) https://www.cuantica2025.es/job-market

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