Joined June 2022
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New @QLOC_INL PhD graduate! Mafalda Ramôa defended her PhD thesis today at Univ. Minho today (May 19th), with David Arvidsson-Shukur (Cambridge), Jarrod McClean (Google), and André Sequeira (INESC-TEC) as examiners. Congrats on your brilliant work Dr. Mafalda!
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The thesis was co-supervised by Sophia Economou (Virginia Tech), Luís Paulo Santos (UMinho, INESC-TEC, INL) and Ernesto Galvão (UFF). Part of it was done during a very productive stay at Virginia Tech. Check out Mafalda's many papers and preprints: scholar.google.com/citations…
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New @QLOC_INL preprint by Rafael Wagner and @efgalvao! They show how to determine commutativity of states or observables using unitary (Bargmann) invariants. This bypasses costly tomography for this classicality test. scirate.com/arxiv/2605.07405
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New @QLOC_INL paper published in Quantum! @catani_lorenzo and colaborators propose a fine-grained classification of contextuality, a key nonclassicality criterion associated with quantum computational advantage. Congrats Lorenzo! quantum-journal.org/papers/q…
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New @QLOC_INL paper out on PRA! @efgalvao and the Khoury experimental quantum optics lab at UFF (Brazil) apply quantum information tools to witness dimension and coherence in classical fractional orbital angular momentum states of a laser beam. journals.aps.org/pra/abstrac…
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@QLOC_INL 's PhD student Mafalda Ramôa was recognized by IOP as an outstanding referee. Congratulations Mafalda! @INLnano accreditations.ioppublishing…
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New preprint by Mafalda Ramôa, Luís Paulo Santos, and colleagues from Virginia Tech! They propose new co-design adaptive quantum state preparation protocols, with significant improvements as compared to the state-of-the-art. Congrats Mafalda!
arxiv.org/abs/2601.20681
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New @QLOC_INL group preprint! Mafalda Ramôa and collaborators from Virginia Tech, Stanford, Brown, NASA, and MSU benchmark multiple near-term and fault-tolerant algorithms for tasks in biochemistry. Congrats Mafalda! arxiv.org/abs/2601.19059
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New @QLOC_INL preprint! Lorenzo Catani and collaborators at UFF and IFRJ (Brazil) experimentally demonstrate nonclassicality using different degrees of freedom of classical light. Congrats to Lorenzo and to former QLOC group member Wagner Balthazar! scirate.com/arxiv/2601.16952
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New preprint out! By Marco Robbio, Leonardo Novo (INL), Ernesto Galvão (INL/UFF) 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/2601.14204
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New preprint by PhD student Mafalda Ramôa, together the Virginia Tech team and Austrian high-school students (!) she's been supervising, on new strategies for variational quantum algorithms. Congrats Mafalda and collaborators! arxiv.org/abs/2512.25004
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New preprint! Rafael Wagner, @efgalvao (@INLnano ), and Kyrylo Simonov (Vienna) show how to use available classical information to simplify estimation of Bargmann invariants for applications in OTOCs, geometric phases, and KD distributions. @foqacia_org arxiv.org/abs/2505.20208
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And now this paper by Rafael Wagner, Kyrylo Simonov, and Ernesto Galvão has appeared in Physical Review A! Congrats to the authors. @INLnano @foqacia_org journals.aps.org/pra/abstrac…
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Quantum and Linear-Optical Computation group @INL retweeted
11 Dec 2025
@QLOC_INL 's Vitória Sousa has just passed her Master's degree examination at Univ. Minho today! Her work is on Feynman path classical simulation of quantum circuits, co-supervised by Ernesto Galvão and Luís Paulo Santos. Congrats Vitória! @INLnano
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@QLOC_INL 's Master's degree student Carolina Sobral received the best Master's poster at the Early Stage Research Association Symposium @INLnano. Congrats Carolina! inl.int/esra-symposium-2025-…
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@QLOC_INL 's Michael de Oliveira has just got his PhD! The main examiners were @danielgrier_ and Dan Brown. His thesis, on shallow circuits and verification protocols, was co-supervised by Elham Kashefi, Ernesto Galvão and Luís Soares Barbosa. Congrats Michael! @INLnano
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New @QLOC_INL preprint by Filipa Peres @fcrperes and Ernesto Galvão @efgalvao! We propose ways of decreasing the depth and complexity of adaptive quantum computation driven by Pauli measurements, a model known as Pauli-based computation. scirate.com/arxiv/2408.04007 1/n
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Congrats to Filipa! This is work associated to her PhD thesis, already submitted. Thanks to @INL_nano @foqacia_org and #FCT for support and funding! 5/n, n=5.
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And our paper on improving Pauli-based quantum computation has now been published in @PhysRevA ! Congrats to Filipa Peres, who's now a postdoc in the group of Jara Juana Bermejo-Vega in Granada. @INLnano @foqacia_org doi.org/10.1103/d3x5-cgky
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New @QLOC_INL preprint! Wagner Balthazar, @efgalvao and colleagues from Bristol describe a Feynman path technique for simulation of boson sampling - including open-source code. @phoqusing @INLnano scirate.com/arxiv/2510.26408
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Newest @QLOC_INL PhD! Rafael Wagner passed his PhD viva at Univ. Minho today with flying colours. Multiple papers and collaborations, deep foundational insights and even experiments, this thesis has it all. Congrats Rafael! @INLnano @foqacia_org
30 Oct 2025
Rafael Wagner is the newest PhD in the group! 5 papers reported in the thesis, 14 others (and counting) on related topics. Congrats Rafael, please keep up the enthusiasm and good work! It was a pleasure to co-supervise your project together with Rui and Mikhail.
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The Univ. of Minho will celebrate the International Year of Quantum Science and Technology with a meeting on Nov. 3rd. Specialists discussing the theme include Filipa Peres and Rafael Wagner, graduates from our group. Register for free: docs.google.com/forms/d/e/1F…
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Here's a poster with the programme:
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