Grzegorz Rajchel-Mieldzioć

Bio

Grzegorz is a physicist specializing in quantum information, in particular, entanglement and quantum channels. He started the journey with this branch of physics doing Bachelor and Master under supervision of Andrzej Dragan at University of Warsaw, studying properties of quantum protocols in the vicinity of black holes. Then, he moved on to a more applied branch of quantum science while doing PhD at Centre for Theoretical PAS, guided by Karol Życzkowski. During his PhD, he solved several problems related to multipartite quantum entanglement and quantum designs. One of those solutions, dubbed as entangled officers of Euler, was awarded a golden prize by National Quantum Information Centre, associated to the University of Gdańsk.

Subsequently, also the entire thesis was recognized as the best PhD thesis in quantum information, defended in Poland in years 2021/22, awarded by the same institution. After the defense, he moved on to ICFO in Barcelona, joining Quantum Optics Theory group of Maciej Lewenstein. He spent there two years, responsible for the branch of the group devoted to advancing the research on experimentally-motived quantum technologies. On coming back to Poland he joined newly created Quantum Computing group at NASK PIB. In October 2024, he became part of BEIT, and is exploring topics at the cross-section of quantum algorithms in chemistry and quantum information. In total, he published 22 research papers.

CV

Full curriculum vitae available here.

Figures

Selected publications

• 2025 Absolutely maximally entangled pure states of multipartite quantum systems
  with Rafał Bistroń, Albert Rico, Arul Lakshminarayan and Karol Życzkowski. arXiv:2508.04777, updated version v2 (2025).
• 2025 Quantum algorithm for solving generalized eigenvalue problems with application to the Schrödinger equation
  with Szymon Pliś and Emil Zak. arXiv:2506.13534, updated version v2 (2025).
• 2025 Quantum Circuits for High-Dimensional Absolutely Maximally Entangled States
  with Berta Casas, Suhail Ahmad Rather, Marcin Płodzień, Wojciech Bruzda, Alba Cervera-Lierta and Karol Życzkowski. Quantum Science and Technology. DOI:10.1088/2058-9565/ae46d6.
• 2024 Spoofing of Quantum Channels Enables Low-Rank Projective Simulation
  with Timothy Heightman. arXiv:2410.14608, updated version v3 (2025).
• 2023 Rényi-Holevo inequality from α-z-Rényi relative entropies
  with Diego G. Bussandri, Pedro W. Lamberti and Karol Życzkowski. International Journal of Quantum Information (2024).
• 2023 Certifying the quantum Fisher information from a given set of mean values: a semidefinite programming approach
  with Guillem Müller-Rigat, Anubhav Kumar Srivastava, Stanisław Kurdziałek, Maciej Lewenstein and Irénée Frérot. Quantum 7, 1152 (2023).
• 2024 Sufficient criteria for absolute separability in arbitrary dimensions via linear map inverses
  with Guillem Müller‑Rigat and Anna Sanpera. Reports on Progress in Physics. DOI:10.1088/1361-6633/ae0cfa.
• 2023 Multi-Unitary Complex Hadamard Matrices
  with Wojciech Bruzda and Karol Życzkowski. arXiv:2306.00999.
• 2022 Operation fidelity explored by numerical range of Kraus operators
  with Igor Chełstowski and Karol Życzkowski. Physical Review A 108, 022409 (2023).
• 2022 Thirty-six entangled officers of Euler: Quantum solution to a classically impossible problem
  with Suhail Ahmad Rather, Adam Burchardt, Wojciech Bruzda, Arul Lakshminarayan and Karol Życzkowski. Physical Review Letters 128, 080507 (2022).
• 2022 9 × 4 = 6 × 6: Understanding the quantum solution to the Euler's problem of 36 officers
  with Karol Życzkowski, Wojciech Bruzda, Adam Burchardt, Suhail Ahmad Rather and Arul Lakshminarayan. Journal of Physics: Conference Series 2448, 012003 (2023).
• 2021 Algebraic and geometric structures inside the Birkhoff polytope
  with Kamil Korzekwa, Zbigniew Puchała and Karol Życzkowski. Journal of Mathematical Physics 63, 012202 (2022).
• 2021 Genuinely quantum SudoQ and its cardinality
  with Jerzy Paczos, Marcin Wierzbiński, Adam Burchardt and Karol Życzkowski. Physical Review A 104, 042423 (2021).
• 2020 Entangling power of multipartite unitary gates
  with Tomasz Linowski and Karol Życzkowski. Journal of Physics A: Mathematical and Theoretical 53, 125303 (2020).
• 2017 Effect of relativistic acceleration on continuous variable quantum teleportation and dense coding
  with Andrzej Dragan and Piotr Grochowski. Physical Review D 96, 045009 (2017).

Awards

KCIK Award for the best PhD thesis in quantum information in Poland (2021–2022).

Winner of the Polish general‑knowledge TV quiz 1 z 10 (2016).

Teaching

Introduction to Quantum Algorithms, UJ Faculty of Mathematics and Computer Science, Winter semester 2025/26.

Teaching assistant for Física II at Universitat Politècnica de Catalunya.

Links

Google Scholar
arXiv
LinkedIn

Contact

grzegorzrajchel@gmail.com