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A Tight Upper Bound for the Third-Order Asymptotics for Most Discrete Memoryless Channels
Marco Tomamichel, Vincent Y. F. Tan
This paper shows that the logarithm of the epsilon-error capacity (average error probability) for n uses of a discrete memoryless channel is upper bounded by the normal approximati…
A Monogamy-of-Entanglement Game With Applications to Device-Independent Quantum Cryptography
Marco Tomamichel, Serge Fehr, Jędrzej Kaniewski +1
We consider a game in which two separate laboratories collaborate to prepare a quantum system and are then asked to guess the outcome of a measurement performed by a third party in…
A Hierarchy of Information Quantities for Finite Block Length Analysis of Quantum Tasks
Marco Tomamichel, Masahito Hayashi
We consider two fundamental tasks in quantum information theory, data compression with quantum side information as well as randomness extraction against quantum side information. W…
Device-Independent Quantum Key Distribution with Local Bell Test
Charles Ci Wen Lim, Christopher Portmann, Marco Tomamichel +2
Device-independent quantum key distribution (DIQKD) in its current design requires a violation of Bell's inequality between two honest parties, Alice and Bob, who are connected by…
A decoupling approach to classical data transmission over quantum channels
Frédéric Dupuis, Oleg Szehr, Marco Tomamichel
Most coding theorems in quantum Shannon theory can be proven using the decoupling technique: to send data through a channel, one guarantees that the environment gets no information…
Secure bit commitment from relativistic constraints
Jędrzej Kaniewski, Marco Tomamichel, Esther Hänggi +1
We investigate two-party cryptographic protocols that are secure under assumptions motivated by physics, namely relativistic assumptions (no-signalling) and quantum mechanics. In p…