debarba at utfpr dot edu dot br
My research interests include quantum information processes under the action of quantum thermodynamic laws (quantum information and thermodynamics); indistinguishable particle foundations, more specifically fermionic quantum correlations and their role in quantum information and quantum computation (fermionic quantum information); quantumness from the perspective of local measurements and the emergence of classicality. All those topics can overlap in one or another project.
News
From the 11th to the 15th of August, I attended the Paraty Quantum Information Workshop, presenting a talk about the Emergence of the Second Law in Isolated Quantum Systems.
I'm pleased with the publication in Entropy, on 3 August 2025, of the work A Complexity-Based Approach to Quantum Observable Equilibration. This project was developed in cooperation with my former group at UFMG. Read the open-access paper in the link.
On July 28, 2025, my colleagues Ale Candeloro and Felix Binder launched on Arxiv the manuscript Thermodynamic Constraints on the Emergence of Intersubjectivity in Quantum Systems. Arxiv:2507.20736
On June 03, 2025, we launched on ArXiv the manuscript entitled A Complexity-Based Approach to Quantum Observable Equilibration, developed in cooperation with the master student Marcos G. Alpino, Prof. Reinaldo O. Vianna, and André T. Cesário. The preprint can be found in the arXiv:2506.03447.
On May 20th, 2025, I was promoted to Associate Professor at Federal University of Technology - Paraná.
Today, on the 20th of May, 2025, I presented a talk at the Brazilian Physics Society Autumn Meeting, which took place in Belém-PA, entitled Unknown measurement statistics cannot be redundantly copied using finite resources.
On March 20, 2025, the work Thermodynamic Constraints on Information Transmission in Quantum Ensembles, in collaboration with Dr. André T. Cesário from UFMG, was launched on ArXiv. The manuscript can be accessed in the preprint link arXiv:2503.16646.
In February 2025, Prof. Marco Tulio Quintino from Sorbonne University in Paris initiated a collaborative project to study the limitations on the capacity to replicate information due to joint-measurability in quantum systems. This project is supported by CNPq under the call CNPq/MCTI/FNDCT Nº 22/2024 - Programa Conhecimento Brasil - Apoio a Projetos em Rede com Pesquisadores Brasileiros no Exterior. We are excited to explore this fascinating research area together.
On February 19, 2025, the collaborative work I developed with the Vienna team—Jake Xuereb, Marcus Huber, and Paul Erker—was published in Quantum Science and Technology. The paper, titled "Quantum Coding with Finite Thermodynamic Resources," is now available as open access. You can access it here.
On January 14, 2025, the work I developed with the Vienna team—Florian Meier, Tom Rivlin, Jake Xuereb, Marcus Huber, and Max Lock—was published in Physical Review X - Quantum. The paper, titled "Emergence of a Second Law of Thermodynamics in Isolated Quantum Systems," is now available as open access. You can find it at the following link.
From November 25th to 29th, 2024, I participated in the III Workshop on Quantum Information and Thermodynamics at CBPF in Rio de Janeiro. I presented my work on "Broadcasting of Quantum Information with Finite Thermodynamic Resources."
On November 1st, I had the opportunity to present a talk titled "Limits of Information Broadcasting and the Emergence of Objectivity in Quantum Thermodynamics" to the Quantum Information group at UFPR. I would like to sincerely thank Prof. Renato Angelo for his hospitality and engaging discussions during my time in Curitiba. It was a wonderful experience.
In August 2024, my time as a Postdoctoral Researcher and Visiting Professor under Prof. Marcus Huber came to an end. It was an incredible experience working with the talented team in Vienna, and I am deeply grateful for the opportunity. I am now returning to my role as Assistant Professor at UTFPR. Thank you to everyone in Vienna for your support and collaboration!
From the 15th to the 19th of July 2024, I participated in the organization of the international conference “Emergence of Classicality: New Perspectives on Measurements in Quantum Theory" (EoC24), which took place in Dublin at Trinity College and brought together leading experts as well as younger scientists working on topics in the foundation of quantum physics. Check the program and all the material in the link.
From the 1st to the 5th of July, I participated in organising the QuITreat 2024, the annual conference organized by the QuIT (Quantum Information and Thermodynamics) research area managed by Marcus Huber. This exclusive event brings together researchers from the fields of quantum information theory and quantum thermodynamics for in-depth discussions on ongoing projects and open problems.
08/06/2024 The paper entitled "Fermionic anyons: Entanglement and quantum computation from a resource-theoretic perspective" is published as Letter in Physical Review A, check it out: https://link.aps.org/doi/10.1103/PhysRevA.110.L010404
05/06/2024 - We launched the manuscript "Emergence of a second law of thermodynamics in isolated quantum systems" on ArXiv:2406.01677 about the emergence of the second law of thermodynamics in isolated quantum systems.
12/03/2024 We launched the manuscript "Broadcasting Quantum Information using Finite Resources" on ArXiv:2403.07660. This project was developed in cooperation with Nicolai Friis and Marcus Huber from the Technical University of Vienna.
02/01/2024 - Postdoc fellowship approved by Cnpq, with the project "Collective effects of spin 1/2 systems for quantum ticking clock precision" to be developed at Atominstitute at TU-Wien