Diego García-Martín
@dgarciamartin.bsky.social
Postdoc at Los Alamos National Laboratory, working on quantum algorithms and quantum computation | Editor at @quantum-journal.bsky.social
Pinned
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
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"
Super fun collaboration with @impolster.bsky.social @nahuelldiaz.bsky.social @martinlaroo.bsky.social and @mvscerezo.bsky.social !
Thread 👇
arxiv.org/abs/2505.24212
Reposted by Diego García-Martín
Sit down & buckle up.
Behind this rather innocent title is the paper that caused the most fraught arguments of any of my career.
Are these arguments important? Probably not.
Am I going to tell you them anyway? Absolutely.
Here is the story of a rollercoaster of a paper.
🎢👇
Behind this rather innocent title is the paper that caused the most fraught arguments of any of my career.
Are these arguments important? Probably not.
Am I going to tell you them anyway? Absolutely.
Here is the story of a rollercoaster of a paper.
🎢👇
November 21, 2025 at 10:13 PM
Sit down & buckle up.
Behind this rather innocent title is the paper that caused the most fraught arguments of any of my career.
Are these arguments important? Probably not.
Am I going to tell you them anyway? Absolutely.
Here is the story of a rollercoaster of a paper.
🎢👇
Behind this rather innocent title is the paper that caused the most fraught arguments of any of my career.
Are these arguments important? Probably not.
Am I going to tell you them anyway? Absolutely.
Here is the story of a rollercoaster of a paper.
🎢👇
Reposted by Diego García-Martín
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 😋😉
If you've ever been curious about statistics and random dynamics in general quantum settings, here's some new work on moments of ensembles of random quantum channels, with the amazing @dgarciamartin.bsky.social , @qzoeholmes.bsky.social , and @mvscerezo.bsky.social !! arxiv.org/abs/2511.12700
Moments of quantum channel ensembles
Moments of ensembles of unitaries play a central role in quantum information theory as they capture the statistical properties of dynamics of systems with some form of randomness. Indeed, concepts suc...
arxiv.org
November 21, 2025 at 2:36 AM
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 😋😉
Reposted by Diego García-Martín
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@
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@
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...
arxiv.org
November 21, 2025 at 2:38 AM
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@
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@
Reposted by Diego García-Martín
If you've ever been curious about statistics and random dynamics in general quantum settings, here's some new work on moments of ensembles of random quantum channels, with the amazing @dgarciamartin.bsky.social , @qzoeholmes.bsky.social , and @mvscerezo.bsky.social !! arxiv.org/abs/2511.12700
Moments of quantum channel ensembles
Moments of ensembles of unitaries play a central role in quantum information theory as they capture the statistical properties of dynamics of systems with some form of randomness. Indeed, concepts suc...
arxiv.org
November 21, 2025 at 12:52 AM
If you've ever been curious about statistics and random dynamics in general quantum settings, here's some new work on moments of ensembles of random quantum channels, with the amazing @dgarciamartin.bsky.social , @qzoeholmes.bsky.social , and @mvscerezo.bsky.social !! arxiv.org/abs/2511.12700
Reposted by Diego García-Martín
🚨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!
Please apply here 👇
academicjobsonline.org/ajo/jobs/31108
Reposts appreciated!
Deadline to Apply is January 11th 2026. Still, you should go and apply now!
Los Alamos National Laboratory, Condensed Matter and Complex Systems
Job #AJO31108, 2026 Los Alamos Quantum Computing Summer School, Condensed Matter and Complex Systems, Los Alamos National Laboratory, Los Alamos, New Mexico, US
academicjobsonline.org
November 18, 2025 at 4:28 PM
🚨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!
Please apply here 👇
academicjobsonline.org/ajo/jobs/31108
Reposts appreciated!
Deadline to Apply is January 11th 2026. Still, you should go and apply now!
Reposted by Diego García-Martín
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 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.
lanl.jobs
November 14, 2025 at 9:54 PM
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 Simulations of fermionic systems apply here: lanl.jobs/search/jobde...
Quantum Simulations for nuclear physics apply here: lanl.jobs/search/jobde...
Shares appreciated
Reposted by Diego García-Martín
We're hiring postdocs! Deadline is 15 Nov.
We're also advertising Leinweber postdoctoral fellowships, which also have an earlier nomination deadline of 1 Nov.
academicjobsonline.org/ajo/MIT/CTP-LI
We're also advertising Leinweber postdoctoral fellowships, which also have an earlier nomination deadline of 1 Nov.
academicjobsonline.org/ajo/MIT/CTP-LI
Massachusetts Institute of Technology, The MIT Center for Theoretical Physics - a Leinweber Institute
Full service online faculty recruitment and application management system for academic institutions worldwide. We offer unique solutions tailored for academic communities.
academicjobsonline.org
October 23, 2025 at 1:22 PM
We're hiring postdocs! Deadline is 15 Nov.
We're also advertising Leinweber postdoctoral fellowships, which also have an earlier nomination deadline of 1 Nov.
academicjobsonline.org/ajo/MIT/CTP-LI
We're also advertising Leinweber postdoctoral fellowships, which also have an earlier nomination deadline of 1 Nov.
academicjobsonline.org/ajo/MIT/CTP-LI
Reposted by Diego García-Martín
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!
Apply here:
lanl.jobs/search/jobde...
Reposts 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.
lanl.jobs
October 22, 2025 at 10:22 PM
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!
Apply here:
lanl.jobs/search/jobde...
Reposts appreciated!
Reposted by Diego García-Martín
(I/III) We're excited to announce a new tenure track opening! The position is called 'quantum informatics' and is affiliated with our QUICK group within the CS+AI division at @jku.at 🇦🇹. Application deadline is November 30th, 2025: www.jku.at/en/the-jku/w...
October 21, 2025 at 1:47 PM
(I/III) We're excited to announce a new tenure track opening! The position is called 'quantum informatics' and is affiliated with our QUICK group within the CS+AI division at @jku.at 🇦🇹. Application deadline is November 30th, 2025: www.jku.at/en/the-jku/w...
Reposted by Diego García-Martín
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!
PhD position. PhD on quantum dynamics at CSIC, IFF https://www.cuantica2025.es/job-market
October 11, 2025 at 10:50 AM
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!
Reposted by Diego García-Martín
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
September 24, 2025 at 2:10 PM
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
Reposted by Diego García-Martín
Reposted by Diego García-Martín
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
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
August 26, 2025 at 4:38 PM
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
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
Reposted by Diego García-Martín
IBM is looking for a quantum developer advocate to work in Spain in the Barcelona región
ibmglobal.avature.net/en_US/career...
ibmglobal.avature.net/en_US/career...
IBM Quantum Developer Advocate EMEA
ibmglobal.avature.net
August 6, 2025 at 5:37 PM
IBM is looking for a quantum developer advocate to work in Spain in the Barcelona región
ibmglobal.avature.net/en_US/career...
ibmglobal.avature.net/en_US/career...
Reposted by Diego García-Martín
#Quantum #QIP2025
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
QIP2025
www.youtube.com
July 27, 2025 at 11:02 PM
#Quantum #QIP2025
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
Reposted by Diego García-Martín
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...
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
July 1, 2025 at 7:02 AM
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...
scirate.com/arxiv/2506.2...
Reposted by Diego García-Martín
📢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
📍 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
June 30, 2025 at 11:12 AM
📢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
📍 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
Reposted by Diego García-Martín
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
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
June 30, 2025 at 12:34 AM
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
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
Reposted by Diego García-Martín
June 26, 2025 at 12:12 PM
Reposted by Diego García-Martín
🚨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
June 25, 2025 at 2:19 PM
🚨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 !
Reposted by Diego García-Martín
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
June 23, 2025 at 6:07 PM
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.
Reposted by Diego García-Martín
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.org/qusoft-vacan...
Deadline: 14 July 2025
QUSOFT Vacancies – Qusoft
qusoft.org
June 11, 2025 at 10:37 AM
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.org/qusoft-vacan...
Deadline: 14 July 2025
Reposted by Diego García-Martín
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!
www.lanl.gov/media/news/0...
Again, huge props to my co authors!
June 6, 2025 at 7:37 PM
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!
www.lanl.gov/media/news/0...
Again, huge props to my co authors!
Reposted by Diego García-Martín
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 :)
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 :)
June 8, 2025 at 5:19 PM
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 :)
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 :)