Title: Unambiguous discrimination of binary coherent states

Authors: Wenbin Yu; Zijia Xiong; Shanshan Rong; Yang Liu; Siyao Wang; Yinsong Xu; Alex X. Liu

Addresses: Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Engineering Center of Network Monitoring, School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China; Department of Computer Science and Engineering, Michigan State University, East Lansing, MI 48824-1266, USA ' Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Engineering Center of Network Monitoring, School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China ' Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Engineering Center of Network Monitoring, School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China ' School of Applied Technology, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China ' School of Applied Technology, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China ' Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Engineering Center of Network Monitoring, School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China ' Department of Computer Science and Engineering, Michigan State University, East Lansing, MI 48824-1266, USA

Abstract: Considering quantum detection, there are two different ways to make a measurement on signals set. One is minimum error discrimination and another is unambiguous states discrimination. In this work, we study the unambiguous state discrimination of coherent states. The quantum measurement model investigated is based on binary signals. All necessary positive-operator valued measurements are established to implement the quantum measurements in non-ambiguity way. The conclusive probability and inconclusive probability for the unambiguous discrimination of both on-off keying and binary-phase-shifting keying modulations are derived rigorously to show the measurement performance of proposed detection method theoretically.

Keywords: unambiguous state discrimination; quantum information processing; coherent state; quantum communication.

DOI: 10.1504/IJCSE.2020.107353

International Journal of Computational Science and Engineering, 2020 Vol.22 No.2/3, pp.313 - 319

Received: 29 Jun 2019
Accepted: 13 Aug 2019
Published online: 18 May 2020 *

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