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Quantum Information Processing

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01-10-2017

Effects of partial-collapse measurement on the parameter-estimation precision of noisy quantum channels

Authors: Xiang-Ping Liao, Mao-Fa Fang, Xin Zhou

Published in: Quantum Information Processing | Issue 10/2017

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Abstract

An efficient method is proposed to enhance the parameter-estimation precision for noisy quantum channels based on measurement reversal from partial-collapse measurement. It is shown that the quantum Fisher information can be distinctly improved for amplitude-damping channel, phase-damping channel and depolarizing channel with partial-collapse measurement. This also means that choosing the appropriate measurement strengths can lead to higher precision of estimation on noisy quantum channels.

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Title: Effects of partial-collapse measurement on the parameter-estimation precision of noisy quantum channels
Authors: Xiang-Ping Liao
Mao-Fa Fang
Xin Zhou
Publication date: 01-10-2017
Publisher: Springer US
Published in: Quantum Information Processing / Issue 10/2017
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-017-1696-6

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