Andreas Winter

Andreas Winter

Universitat Autònoma de Barcelona

Experimental Sciences & Mathematics

Andreas Winter was born in Altötting, a small rural town near Munich, known also as the Heart of Bavaria. After developing an infatuation with science early on, and in particular with mathematics, he decided to study this subject in Konstanz and Berlin. He graduated in 1997 from the Freie Universität Berlin, and went on to obtain a doctorate in mathematics from the Universität Bielefeld in 1999, with the late Rudolf Ahlswede. In 2001 he joined the quantum information group in Bristol as a postdoc, became Lecturer in Applied Mathematics there in 2003, and Professor of the Physics of Information in 2006. In 2012 he left Bristol after 11 years, to move to the Universitat Autònoma de Barcelona as ICREA Research Professor, where he is now part of the quantum information group.

Research interests

I work on quantum information, especially quantum Shannon theory, which aims at incorporating information-theoretic ideas into physics. The Shannon theoretic approach has succeeded in quantifying entanglement as a resource in information processing task, and likewise for other properties of quantum systems such as channel and storage capacities of quantum systems. One of my favourite topics is the interplay between classical and quantum information, evident in the intricate structure of local operations in composite systems, such as data hiding or "information locking". I also work on additivity and non-additivity of quantum channel capacities, quantum data compression, and zero-error quantum communication. Further interests include statistical mechanics, thermodynamics, resource theories, entropy characterization and entanglement measures. But at heart I am a mathematician and will still get fascinated by classic problems: existence of Hadamard matrices, incompleteness, ...

Selected publications

- Fanizza M, Lumbreras J & Winter A 2024, 'Quantum Theory in Finite Dimension Cannot Explain Every General Process with Finite Memory', Commun. Math. Phys. 405(2):50.
- Xu ZP, Schwonnek R, Winter A 2024, 'Bounding the Joint Numerical Range of Pauli Strings by Graph Parameters', PRX Quantum 5:020318.
- Lancien C & Winter A 2024 'Approximating quantum channels by ...', Quantum 8:1320.
- Colomer P & Winter A 2024, 'Decoupling by Local Random Unitaries without Simultaneous Smoothing...', Commun. Math. Phys. 405(12):281.
- Colomer P, Deppe C, Boche H & Winter A 2024, 'Zero-entropy encoders and simultaneous decoders in identification...', ICC 2024 (Denver, CO), pp. 1776-1781.
- Colomer P, Deppe C, Boche H & Winter A 2024, 'Deterministic identification over channels with finite output: a dimensional perspective on superlinear rates', ISIT 2024 (Athens), pp. 297-302
- Cai M & Winter A 2024, 'Quantum Wiretap Channel Coding Assisted by Noisy Correlation', ISIT 2024 (Athens), pp. 3101-3105
- Winter A 2024, 'Is Winter Coming?', arXiv:2403.1997.
- Chen XA, Zhang YJ, Winter A, Lorenz VO & Chitambar E 2024, 'Information carried by a single particle in quantum multiple-access channels', Phys. Rev. A 109:062420.
- Aniello P, L'Innocente S, Mancini S, Parisi V, Svampa I & Winter A 2024, 'Invariant measures on p-adic Lie groups: ...', Lett. Math. Phys. 114(3):78.
- Vázquez-Castro Á, Winter A & Zbinden H 2024, 'Quantum Keyless Private Communication...', IEEE Trans. Inf. Forensics Sec. 19:6213-6224.
- Liss R, Mor T & Winter A 2024, 'Geometry of entanglement and separability in Hilbert subspaces of dimension up to three', Lett. Math. Phys. 114(3):86.
- Atif TA, Pradhan SS & Winter A 2024, 'Quantum Soft-Covering Lemma with Applications...', Int. J. Quantum Inf. 22(5):24400136.

Selected research activities

With Ángela Capel, Nilanjana Datta & Ludovico Lami, organised BIRS workshop "Towards Infinite Dimension and Beyond in Quantum Information", 5-10 May 2024, at IMAG (Granada).