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

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...

Full description

Saved in:
Bibliographic Details
Published in:Quantum information processing 2017-10, Vol.16 (10), p.1-11, Article 247
Main Authors: Zhou, Hua, Su, Yang, Wang, Rong, Zhu, Yong, Shen, Huiping, Pu, Tao, Wu, Chuanxin, Zhao, Jiyong, Zhang, Baofu, Xu, Zhiyong
Format: Article
Language:English
Subjects:
Communication
Data Structures and Information Theory
Decoding
Dimensional measurement
Evolution
Intervals
Mathematical Physics
Physics
Physics and Astronomy
Projectors
Quantum Computing
Quantum Information Technology
Quantum Physics
Quantum theory
Qubits (quantum computing)
Reconstruction
Spintronics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1570-0755
1573-1332
DOI:10.1007/s11128-017-1700-1