Ernesto Galvão's Avatar

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

350 Followers  |  302 Following  |  105 Posts  |  Joined: 20.08.2024
Posts Following

Posts by Ernesto Galvão (@efgalvao.bsky.social)

Preview
Se duplican las solicitudes de científicos de EE UU para trasladarse a España: “Mis colegas lo están pasando muy mal” Uno de cada tres candidatos al programa Atrae, dotado con 39 millones de euros, proviene de Estados Unidos, un número nunca visto

In case you're interested, CSIC is still looking for experimentalists on quantum technologies. Just keep an eye on these and other calls, or talk to us for possible future openings.
elpais.com/ciencia/2026...

23.02.2026 09:21 — 👍 3    🔁 2    💬 0    📌 0

“Individual ICE agents get money per head that they detain – the guards told me that,” [...] "administration ordered ICE officials to detain more people, [...]. Reports immediately began to emerge of international travellers being detained by ICE officers." It does not feel very safe.

21.02.2026 19:02 — 👍 5    🔁 1    💬 0    📌 0
Preview
#80: Certified Unpredictability Dr. Stephen Walborn, Co-Founder and CTO of Sequre Quantum

Dr. Walborn and I spoke about QRNG use cases, self-testing and certification, the underlying mechanism for guaranteeing randomness, API versus on-premises options, and Sequre Quantum’s plans for integrating its QRNG into its own PQC and/or QKD solutions.

bsiegelwax.substack.com/p/80?utm_sou...

18.02.2026 02:12 — 👍 1    🔁 1    💬 0    📌 0
Post image

Check out this course, if you want to learn about our quantum pictures!

Link: neurossance.com/courses/quan...

16.02.2026 14:27 — 👍 6    🔁 4    💬 0    📌 0

I’ve been very lucky to learn so many things together with them along their PhD journeys. Looking forward to following the next steps in their careers! 6/n, n=6.

13.02.2026 15:40 — 👍 1    🔁 0    💬 0    📌 0

@sara-franco.bsky.social is a 2nd-year PhD student working on scaling up photonic quantum computers - currently we’re looking at ideas to explore together with quantum computing company quandela.bsky.social, where she’ll be an intern later this year. 5/n www.linkedin.com/in/sara-fran...

13.02.2026 15:39 — 👍 0    🔁 0    💬 1    📌 0

Mafalda Ramôa works on optimizing variational quantum algorithms, in particular for quantum chemistry. Check out her many publications with co-supervisors Luís Paulo Santos (Univ. Minho) and Sofia Economou from Virginia Tech, where Mafalda is currently based: 3/n
scholar.google.com/citations?hl...

13.02.2026 15:33 — 👍 0    🔁 0    💬 1    📌 0
Preview
Alexandra Ramôa Hello! I am Alexandra, a PhD student working on quantum computing, currently doing an internship at UT Austin supervised by Scott Aaronson. I am especially interested in quantum-enhanced numerical in...

Alexandra Ramôa works on Bayesian methods for quantum amplitude estimation, device calibration, and planning. She’s done internships with groups in Tokyo (Akihito Soeda), Texas (Scott Aaronson), and Valencia (Germán Rodrigo) – Lucky them! 4/n sites.google.com/view/alexand...

13.02.2026 15:31 — 👍 0    🔁 0    💬 1    📌 0
Preview
Camillini Anita She obtained her master’s degree in Theoretical Physics from La Sapienza University of Rome. She is completing her PhD in Quantum Computing at University of Minho jointly with INL…

Anita Camillini is already writing up her thesis, and she currently works in the quantum computing group of Cineca (Italian HPC). Her work spans linear-optical protocols for device certification and indistinguishability distillation, among other topics. 2/n www.hpc.cineca.it/staff/camill...

13.02.2026 15:30 — 👍 0    🔁 0    💬 1    📌 0
Preview
International Day of Women and Girls in Science | United Nations The purpose of the day is to achieve full and equal access to and participation in science for women and girls.

Feb. 11th was the International Day of Women and Girls in Science - let me briefly highlight here the 4 brilliant female PhD students I currently supervise, hosted at @inlnano.bsky.social : Anita Camillini, Alexandra Ramôa, Mafalda Ramôa, and Sara Franco. A thread 1/n
www.un.org/en/observanc...

13.02.2026 15:28 — 👍 3    🔁 0    💬 1    📌 0
Preview
Quantum teleportation is even weirder than you think - Nature Don't let the catchy name distract you, says Philip Ball: the questions inspired by this arguably misnamed phenomenon go to the heart of quantum theory.

1/4 RIP Micius 🛰️
The world's first quantum satellite crashed into the Pacific last week (to the west of Ecuador) after an almost 10-year mission
Also known as Mozi (& QUESS) it was famously the first to teleport a photon to space (or at least its quantum state)
🧪⚛️
www.nature.com/articles/nat...

05.02.2026 16:11 — 👍 21    🔁 10    💬 2    📌 1
Video thumbnail

We take randomness for granted.


Early PRNGs were BAD.

Thousands of scientific papers used to rely on RANDU, created by IBM in the 1960s.

In 1D space, it looks ok!

Map in 3D…you start to see the issues. Now, there *was* a better solution...but it would cost you.

05.02.2026 21:58 — 👍 105    🔁 21    💬 1    📌 3
Post image

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...

04.02.2026 22:59 — 👍 4    🔁 0    💬 0    📌 0
Preview
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...

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...

21.01.2026 08:25 — 👍 4    🔁 0    💬 0    📌 0

Tenure-track faculty position in quantum info at Perimeter Institute.

12.01.2026 16:43 — 👍 3    🔁 2    💬 0    📌 0
Preview
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.

“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.”

10.01.2026 08:29 — 👍 11023    🔁 4508    💬 203    📌 342

Imagine if the US attempted to learn from Uruguay instead of invading Venezuela

10.01.2026 20:06 — 👍 88    🔁 25    💬 1    📌 0
Preview
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.

Good read: www.nature.com/articles/d41...

07.01.2026 10:42 — 👍 5    🔁 2    💬 1    📌 0
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...

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...

26.12.2025 21:09 — 👍 4    🔁 2    💬 0    📌 0

2025 is almost over! Looking forward to 2026, when I'll finally do all the things I didn't get to in 2024

21.12.2025 04:31 — 👍 43    🔁 8    💬 1    📌 0

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.

20.12.2025 00:35 — 👍 2    🔁 1    💬 3    📌 0
Login • Instagram Welcome back to Instagram. Sign in to check out what your friends, family & interests have been capturing & sharing around the world.

Perhaps the best live gig I've attended this year, the year I returned to Rio. The "Baile do Hamilton" was a blast, great instrumental music and dancing at Circo Voador! www.instagram.com/p/DMJDcDGyDJ...

20.12.2025 16:41 — 👍 3    🔁 0    💬 0    📌 0
Rockets owners expand talks to buy, move Sun

Rockets owners expand talks to buy, move Sun

Terrifying headline if you don’t realize they are sports teams.

19.12.2025 16:37 — 👍 13718    🔁 2765    💬 131    📌 129
Video thumbnail

The term "qubit" was born out of a joke between Ben Schumacher and Bill Wootters!
@perimeterinstitute.ca

16.12.2025 18:52 — 👍 18    🔁 5    💬 0    📌 1

😡

07.12.2025 19:06 — 👍 14    🔁 3    💬 0    📌 0
Post image

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.

05.12.2025 17:56 — 👍 23    🔁 8    💬 1    📌 1
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”.

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...

02.12.2025 11:50 — 👍 3    🔁 2    💬 0    📌 0

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...

02.12.2025 10:44 — 👍 6    🔁 0    💬 0    📌 0
Post image

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

26.11.2025 08:43 — 👍 4    🔁 1    💬 0    📌 0
Preview
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...

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!

20.11.2025 19:30 — 👍 1    🔁 1    💬 0    📌 0