How to maximize the capacity of general quantum noisy channels

Goren Gordon; Gershon Kurizki

doi:10.1002/prop.200900095

How to maximize the capacity of general quantum noisy channels

Goren Gordon^*, Gershon Kurizki

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

A general quantum noisy channel is analyzed, wherein the transmitted qubits may experience symmetry-breaking decoherence, along with memory effects. We examine generalized Bell-basis and find that the optimal basis is not the fully entangled one, but a combination of factorized and partially-entangled states in the presence of memory, asymmetry and the state-bias of the noise. Capacity-maximization is shown to be achievable by combining temporal shaping of the transmitted qubits and optimal basis selection.

Original language	English
Pages (from-to)	1071-1077
Number of pages	7
Journal	Fortschritte der Physik
Volume	57
Issue number	11-12
DOIs	https://doi.org/10.1002/prop.200900095
State	Published - Nov 2009
Externally published	Yes

Keywords

Dynamical control
Memory channels
Quantum information

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10.1002/prop.200900095

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How to maximize the capacity of general quantum noisy channels

Abstract

Keywords

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