Complexity-constrained quantum information
The study of quantum information when physically accessible operations are restricted to efficient state preparations, measurements, and transformations.
Quantum information theory · Paris
ÁLVARO YÁNGÜEZ
I am a PhD candidate at LIP6, Sorbonne Université, and a member of the Marie Skłodowska-Curie Doctoral Network Quantum Safe Internet. My research examines how computational complexity constrains the efficient preparation of quantum states and the implementation of measurements and transformations. From this perspective, I investigate operational measures of distinguishability and correlations, quantum resources hidden from efficient observers, and their cryptographic consequences.
- Computational quantum information
- Quantum cryptography
- Quantum complexity
Research
Research directions
My research concerns the physical and operational consequences of computational complexity in quantum systems. In particular, I study how restrictions on preparation, measurement, and transformation change which properties can be observed, which states can be distinguished, and which resources can be extracted or used.
Quantum cryptography
The study of quantum cryptographic protocols built on computational assumptions, encompassing both near-term applications and fundamental questions.
Publications & preprints
Papers
Selected talks
Talks
Invited seminar
QuSoft/CWI · Amsterdam
A Practical Protocol for Quantum Oblivious Transfer from One-Way Functions
Invited talk
Higgs Centre for Theoretical Physics · Edinburgh
Quantum Pseudoresources Imply Cryptography
Invited seminar
University of Cambridge
Efficient Quantum Measurements: Computational Max- and Measured Rényi Divergences and Applications
Conference talk
International Conference on Quantum Cryptography and Security (ICQCS)
A Practical Protocol for Quantum Oblivious Transfer from One-Way Functions
Curriculum vitae
Experience & education
Education
2023–2026
PhD in Quantum Information Theory
Sorbonne Université · Paris
Marie Skłodowska-Curie Doctoral Network “Quantum Safe Internet”.
2021–2023
M.Sc. in Quantum Science and Technology
Technical University of Munich and LMU Munich
Thesis: Quantum tomography enabled by homogeneous Markovian evolutions · supervised by Michael M. Wolf.
2017–2022
Degree in Physics
Universidad Complutense de Madrid
Research experience
Apr 2022–Sep 2023
Research collaborator
Technical University of Munich
Theoretical research in quantum communication and remote state preparation with Holger Boche.
Academic life
Service & supervision
Supervision
Bachelor research projects
Supervised Léna Husse, Johanna Theophilos, and Matéo Boury on quantum oblivious transfer in the Quantum Random Oracle Model (Jan–Jun 2026).
Academic service
Reviewing
Journals
- Physical Review Letters
- Physical Review A
- npj Quantum Information
Conferences
- TQC 2026
- QIP 2025
- STOC 2025
Conference organization
ICQCS
Organizing committee for the International Conference on Quantum Cryptography and Security.
Visit websiteProgram committee
QSI Workshop 2025
Program committee member.
Community
Quantum information seminars
Co-organized the weekly LIP6 quantum information seminar with Matilde Baroni (Jun 2024–Jun 2025).
Contact
Let’s discuss quantum information.
For research conversations, seminars, or collaboration, the best way to reach me is by email.
alvaro.yanguez@lip6.fr