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01-10-2017

Online evolution reconstruction from a single measurement record with random time intervals for quantum communication

Authors: Hua Zhou, Yang Su, Rong Wang, Yong Zhu, Huiping Shen, Tao Pu, Chuanxin Wu, Jiyong Zhao, Baofu Zhang, Zhiyong Xu

Published in: Quantum Information Processing | Issue 10/2017

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Abstract

Online reconstruction of a time-variant quantum state from the encoding/decoding results of quantum communication is addressed by developing a method of evolution reconstruction from a single measurement record with random time intervals. A time-variant two-dimensional state is reconstructed on the basis of recovering its expectation value functions of three nonorthogonal projectors from a random single measurement record, which is composed from the discarded qubits of the six-state protocol. The simulated results prove that our method is robust to typical metro quantum channels. Our work extends the Fourier-based method of evolution reconstruction from the version for a regular single measurement record with equal time intervals to a unified one, which can be applied to arbitrary single measurement records. The proposed protocol of evolution reconstruction runs concurrently with the one of quantum communication, which can facilitate the online quantum tomography.

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Title: Online evolution reconstruction from a single measurement record with random time intervals for quantum communication
Authors: Hua Zhou
Yang Su
Rong Wang
Yong Zhu
Huiping Shen
Tao Pu
Chuanxin Wu
Jiyong Zhao
Baofu Zhang
Zhiyong Xu
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/s11128-017-1700-1

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