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Title of Journal: Quantum Inf Process

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Abbravation: Quantum Information Processing

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Publisher

Springer US

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DOI

10.1016/j.addma.2017.03.001

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ISSN

1573-1332

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Classical–quantum arbitrarily varying wiretap chan

Authors: Holger Boche Minglai Cai Christian Deppe Janis Nötzel
Publish Date: 2016/08/08
Volume: 15, Issue: 11, Pages: 4853-4895
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Abstract

We establish the Ahlswede dichotomy for arbitrarily varying classical–quantum wiretap channels ie either the deterministic secrecy capacity of the channel is zero or it equals its randomnessassisted secrecy capacity We analyze the secrecy capacity of these channels when the sender and the receiver use various resources It turns out that randomness common randomness and correlation as resources are very helpful for achieving a positive secrecy capacity We prove the phenomenon “superactivation” for arbitrarily varying classical–quantum wiretap channels ie two channels both with zero deterministic secrecy capacity if used together allow perfect secure transmission

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  14. Noncyclic geometric quantum computation and preservation of entanglement for a two-qubit Ising model
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