Local discrimination of four or more maximally entangled states

Guojing Tian, Sixia Yu, Fei Gao, Qiaoyan Wen, and C. H. Oh
Phys. Rev. A 91, 052314 – Published 15 May 2015

Abstract

In the 44 quantum system, four qubit lattice states are found to be either locally indistinguishable or distinguishable by using one-way classical communication only, presenting a curious and counterintuitive case in which two-way classical communication has no advantage. Based on these results, we explicitly construct sets of four, five, and even more maximally entangled states that can be locally distinguished only with the help of two-way classical communication, solving partially the open problem described by Nathanson [Phys. Rev. A 88, 062316 (2013)] and highlighting in more detail the difference between local operations with and without two-way classical communication in distinguishing more than three states.

  • Received 13 January 2015

DOI:https://doi.org/10.1103/PhysRevA.91.052314

©2015 American Physical Society

Authors & Affiliations

Guojing Tian1,2,*, Sixia Yu2,†, Fei Gao1,‡, Qiaoyan Wen1, and C. H. Oh2,§

  • 1State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2Centre for Quantum Technologies, National University of Singapore, 2 Science Drive 3, Singapore 117542

  • *helentian@bupt.edu.cn
  • yusx@nus.edu.sg
  • gaof@bupt.edu.cn
  • §phyohch@nus.edu.sg

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 91, Iss. 5 — May 2015

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×