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Open Quantum Systems Decoherence Entanglement Theory Quantum Correlations

Quantum cloning machines with phase-conjugate input modes.

PubMed

Authors: Cerf NJ, Iblisdir S

Year

2001

Paper ID

13222

Status

Peer-reviewed

Abstract Read

~2 min

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Abstract

A quantum cloning machine is introduced that yields M identical optimal clones from N replicas of a coherent state and N' replicas of its phase conjugate. It also optimally produces M' = M+N'-N phase-conjugate clones at no cost. For well chosen ratios N'/N, this machine is shown to provide better cloning fidelities than the standard (N+N')-->M cloner. The special cases of the optimal balanced cloner N = N' and optimal measurement M = infinity are investigated.

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A quantum cloning machine is introduced that yields M identical optimal clones from N replicas of a coherent state and N' replicas of its phase conjugate.

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References & Citation Signals

[1] DOI https://doi.org/10.1103/PhysRevLett.87.247903 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/11736541/

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