Ernesto Galvão
@efgalvao.bsky.social
I am part of a research group working on quantum computation (especially photonic) at Universidade Federal Fluminense (UFF) in Niterói, Brazil. https://sites.google.com/view/efgalvao/home
Just wrapped up my minicourse on photonic quantum computation, as part of the XVIII Jorge André Swieca Optics Summer School, held at UFF. Here are some notes notes and slides: sites.google.com/id.uff.br/sw...
February 4, 2026 at 10:59 PM
Just wrapped up my minicourse on photonic quantum computation, as part of the XVIII Jorge André Swieca Optics Summer School, held at UFF. Here are some notes notes and slides: sites.google.com/id.uff.br/sw...
New preprint out! Jointly with Marco Robbio and Leonardo Novo (INL), and Nicolas Cerf (ULB). We show how to efficiently measure multivariate traces of quantum states (AKA Bargmann invariants) using linear optics, with multiple applications. scirate.com/arxiv/2601.1...
Native linear-optical protocol for efficient multivariate trace estimation
The Hong-Ou-Mandel test estimates the overlap between spectral functions characterizing the internal degrees of freedom of two single photons. It can be viewed as a photon-native protocol that impleme...
scirate.com
January 21, 2026 at 8:25 AM
New preprint out! Jointly with Marco Robbio and Leonardo Novo (INL), and Nicolas Cerf (ULB). We show how to efficiently measure multivariate traces of quantum states (AKA Bargmann invariants) using linear optics, with multiple applications. scirate.com/arxiv/2601.1...
Tenure-track faculty position in quantum info at Perimeter Institute.
January 12, 2026 at 4:43 PM
Tenure-track faculty position in quantum info at Perimeter Institute.
Reposted by Ernesto Galvão
“Uruguay did what most nations still call impossible: it built a power grid that runs almost entirely on renewables—at half the cost of fossil fuels. The physicist who led that transformation says the same playbook could work anywhere—if governments have the courage to change the rules.”
Uruguay’s Renewable Charge: A Small Nation, A Big Lesson For The World
Uruguay built a power grid that runs 99% on renewables—at half the cost of fossil fuels. Here’s how its bold energy overhaul became a global model.
www.forbes.com
January 10, 2026 at 8:29 AM
“Uruguay did what most nations still call impossible: it built a power grid that runs almost entirely on renewables—at half the cost of fossil fuels. The physicist who led that transformation says the same playbook could work anywhere—if governments have the courage to change the rules.”
Reposted by Ernesto Galvão
Imagine if the US attempted to learn from Uruguay instead of invading Venezuela
“Uruguay did what most nations still call impossible: it built a power grid that runs almost entirely on renewables—at half the cost of fossil fuels. The physicist who led that transformation says the same playbook could work anywhere—if governments have the courage to change the rules.”
Uruguay’s Renewable Charge: A Small Nation, A Big Lesson For The World
Uruguay built a power grid that runs 99% on renewables—at half the cost of fossil fuels. Here’s how its bold energy overhaul became a global model.
www.forbes.com
January 10, 2026 at 8:06 PM
Imagine if the US attempted to learn from Uruguay instead of invading Venezuela
Reposted by Ernesto Galvão
Good read: www.nature.com/articles/d41...
Point of no returns: researchers are crossing a threshold in the fight for funding
With so little money to go round, the costs of competing for grants can exceed what the grants are worth. When that happens, nobody wins.
www.nature.com
January 7, 2026 at 10:42 AM
Good read: www.nature.com/articles/d41...
New paper published in @physreva.bsky.social, jointly with Kyrylo Simonov (Vienna) and Rafael Wagner (INL/Minho/Ulm)! We simplify the estimation of multivariate traces/Bargmann invariants using partial classical info. Thanks @quantumrw.bsky.social and Kyrylo! journals.aps.org/pra/abstract...
Estimation of multivariate traces of states given partial classical information
Bargmann invariants of order $n$, defined as multivariate traces of quantum states $\text{Tr}[{\ensuremath{\rho}}_{1}{\ensuremath{\rho}}_{2}...{\ensuremath{\rho}}_{n}]$, are useful in applications ran...
journals.aps.org
December 26, 2025 at 9:09 PM
New paper published in @physreva.bsky.social, jointly with Kyrylo Simonov (Vienna) and Rafael Wagner (INL/Minho/Ulm)! We simplify the estimation of multivariate traces/Bargmann invariants using partial classical info. Thanks @quantumrw.bsky.social and Kyrylo! journals.aps.org/pra/abstract...
Reposted by Ernesto Galvão
2025 is almost over! Looking forward to 2026, when I'll finally do all the things I didn't get to in 2024
December 21, 2025 at 4:31 AM
2025 is almost over! Looking forward to 2026, when I'll finally do all the things I didn't get to in 2024
Reposted by Ernesto Galvão
Tell me what the best thing is that you did for your *soul* this year. I don't mean in the religious sense, I mean that gives your life meaning, or joy, something *not* work. The best book, play, musical performance, film, hiking trip, whatever it was that brought you some peace and happiness.
December 20, 2025 at 12:35 AM
Tell me what the best thing is that you did for your *soul* this year. I don't mean in the religious sense, I mean that gives your life meaning, or joy, something *not* work. The best book, play, musical performance, film, hiking trip, whatever it was that brought you some peace and happiness.
Reposted by Ernesto Galvão
Terrifying headline if you don’t realize they are sports teams.
December 19, 2025 at 4:37 PM
Terrifying headline if you don’t realize they are sports teams.
Reposted by Ernesto Galvão
The term "qubit" was born out of a joke between Ben Schumacher and Bill Wootters!
@perimeterinstitute.ca
@perimeterinstitute.ca
December 16, 2025 at 6:52 PM
The term "qubit" was born out of a joke between Ben Schumacher and Bill Wootters!
@perimeterinstitute.ca
@perimeterinstitute.ca
Reposted by Ernesto Galvão
😡
Not including Border Patrol, ICE has arrested nearly 75,000 people with no criminal records.
This data is compiled by ICE internally and was obtained by
UC Berkeley’s Deportation Data Project via a lawsuit.
ICE is currently holding 65,000 migrants in detention centers around the country.
This data is compiled by ICE internally and was obtained by
UC Berkeley’s Deportation Data Project via a lawsuit.
ICE is currently holding 65,000 migrants in detention centers around the country.
ICE has arrested nearly 75,000 people with no criminal records, data shows
The figures do not include arrests made by Border Patrol, which has launched aggressive immigration operations in several cities in recent months.
www.nbcnews.com
December 7, 2025 at 7:05 PM
😡
Reposted by Ernesto Galvão
Peter Shor: we haven't found many new quantum algorithms, in part, because we need larger quantum devices for testing our heuristics. He gives several examples of algorithms that were discovered computationally, including turbo codes, @fermilab.bsky.social quantum symposium by the SQMS center.
December 5, 2025 at 5:57 PM
Peter Shor: we haven't found many new quantum algorithms, in part, because we need larger quantum devices for testing our heuristics. He gives several examples of algorithms that were discovered computationally, including turbo codes, @fermilab.bsky.social quantum symposium by the SQMS center.
Reposted by Ernesto Galvão
Research Associate position available at the University of Edinburgh Quantum Software Lab to work on a joint project on orchestration of heterogeneous quantum computers with Fujitsu. Apply here: elxw.fa.em3.oraclecloud.com/hcmUI/Candid...
Research Associate
The School of Informatics, University of Edinburgh invites applications for a Research Associate.The post holder will work on the project “Optimal orchestration of heterogeneous quantum computers”.
elxw.fa.em3.oraclecloud.com
December 2, 2025 at 11:50 AM
Research Associate position available at the University of Edinburgh Quantum Software Lab to work on a joint project on orchestration of heterogeneous quantum computers with Fujitsu. Apply here: elxw.fa.em3.oraclecloud.com/hcmUI/Candid...
New paper published in @physreva.bsky.social ! The first author is my former PhD student Filipa Peres, now a postdoc with Jara Juani Bermejo-Vega group in Granada. We optimize depth and measurement complexity for Pauli-based (quantum) computation. Congrats Filipa! journals.aps.org/pra/abstract...
journals.aps.org
December 2, 2025 at 10:44 AM
New paper published in @physreva.bsky.social ! The first author is my former PhD student Filipa Peres, now a postdoc with Jara Juani Bermejo-Vega group in Granada. We optimize depth and measurement complexity for Pauli-based (quantum) computation. Congrats Filipa! journals.aps.org/pra/abstract...
Reposted by Ernesto Galvão
The EPSRC Centre for Doctoral Training in Quantum Informatics (QI CDT) invites applications for up to 16 fully funded four-year PhD studentships in Quantum Informatics with Integrated Study for September 2026 entry. www.quantuminformatics-cdt.ac.uk
November 26, 2025 at 8:43 AM
The EPSRC Centre for Doctoral Training in Quantum Informatics (QI CDT) invites applications for up to 16 fully funded four-year PhD studentships in Quantum Informatics with Integrated Study for September 2026 entry. www.quantuminformatics-cdt.ac.uk
Reposted by Ernesto Galvão
We decided to extend the deadline for applications, as we have a few open positions for the same role. Here is the updated link apply.careers.microsoft.com/careers/job/... -- please fwd to anyone interested in applying!
Senior Researcher | Microsoft Careers
This position offers an opportunity to have a meaningful influence on a revolutionary technology. The research and development effort includes a diverse staff of theoretical and experimental physicist...
apply.careers.microsoft.com
November 20, 2025 at 7:30 PM
We decided to extend the deadline for applications, as we have a few open positions for the same role. Here is the updated link apply.careers.microsoft.com/careers/job/... -- please fwd to anyone interested in applying!
Reposted by Ernesto Galvão
Can’t believe the whole country has to suffer through the return of Dickensian childhood diseases because the worst, most ignorant attention-demanders decided other people’s expertise makes them feel bad
November 20, 2025 at 4:19 AM
Can’t believe the whole country has to suffer through the return of Dickensian childhood diseases because the worst, most ignorant attention-demanders decided other people’s expertise makes them feel bad
Reposted by Ernesto Galvão
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 Ernesto Galvão
California just launched Quantum California, a bold statewide initiative to strengthen its leadership in next-gen technology.
#Quantum #QuantumComputing #technology #Science
#Quantum #QuantumComputing #technology #Science
Governor Newsom announces “Quantum California” — strengthening the Golden State’s leadership in next-generation technology | California Governor’s Office of Business and Economic Development
SACRAMENTO — Today, Governor Newsom and the California Jobs First Council announced $80 million in funding to support eleven projects across California. Project
business.ca.gov
November 10, 2025 at 12:24 AM
California just launched Quantum California, a bold statewide initiative to strengthen its leadership in next-gen technology.
#Quantum #QuantumComputing #technology #Science
#Quantum #QuantumComputing #technology #Science
Reposted by Ernesto Galvão
Reposted by Ernesto Galvão
Department of Physics at UIUC is looking for an Assistant Professor in Theoretical Quantum Information Science, including, but not limited to, quantum error correction, quantum optics, quantum algorithms, and AMO physics.
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Grainger Engineering: Assistant Professor in Theoretical QIS - Department of Physics
Duties & Responsibilities
illinois.csod.com
November 5, 2025 at 1:14 PM
Department of Physics at UIUC is looking for an Assistant Professor in Theoretical Quantum Information Science, including, but not limited to, quantum error correction, quantum optics, quantum algorithms, and AMO physics.
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Reposted by Ernesto Galvão
We continue to grow the QEC team at Microsoft Quantum! We have another open role for people just out of graduate school and we are interested in talking to mathematicians, physicists, computer scientists, etc.
jobs.careers.microsoft.com/global/en/jo...
#QuantumCareers #MicrosoftQuantum #Hiring
jobs.careers.microsoft.com/global/en/jo...
#QuantumCareers #MicrosoftQuantum #Hiring
Search Jobs | Microsoft Careers
jobs.careers.microsoft.com
November 2, 2025 at 8:24 PM
We continue to grow the QEC team at Microsoft Quantum! We have another open role for people just out of graduate school and we are interested in talking to mathematicians, physicists, computer scientists, etc.
jobs.careers.microsoft.com/global/en/jo...
#QuantumCareers #MicrosoftQuantum #Hiring
jobs.careers.microsoft.com/global/en/jo...
#QuantumCareers #MicrosoftQuantum #Hiring
New preprint out! Wagner Balthazar, @efgalvao.bsky.social and Jake Bulmer, Alex Jones, and Quinn Palmer (Bristol) describe a Feynman path approach to the simulation of boson sampling - including open-source code. @inlnano.bsky.social scirate.com/arxiv/2510.2...
Feynman path sum approach for simulation of linear optics
The Feynman path integral formalism has inspired the development of memory-efficient and parallelizable classical algorithms for simulating quantum computers. We adapt this approach for the calculatio...
scirate.com
October 31, 2025 at 10:48 AM
New preprint out! Wagner Balthazar, @efgalvao.bsky.social and Jake Bulmer, Alex Jones, and Quinn Palmer (Bristol) describe a Feynman path approach to the simulation of boson sampling - including open-source code. @inlnano.bsky.social scirate.com/arxiv/2510.2...
Reposted by Ernesto Galvão
People take for granted the fact that mangos are so delicious, but most don’t know that every logical mango is made out of many physical mangos.
October 30, 2025 at 6:52 AM
People take for granted the fact that mangos are so delicious, but most don’t know that every logical mango is made out of many physical mangos.