Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevA.83.020303
Title: Optimal detection of entanglement in Greenberger-Horne-Zeilinger states
Authors: Kay, A. 
Issue Date: 22-Feb-2011
Source: Kay, A. (2011-02-22). Optimal detection of entanglement in Greenberger-Horne-Zeilinger states. Physical Review A - Atomic, Molecular, and Optical Physics 83 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.83.020303
Abstract: We present a broad class of N-qubit Greenberger-Horne-Zeilinger (GHZ)-diagonal states such that nonpositivity under the partial transpose operation is necessary and sufficient for the presence of entanglement, including many naturally arising instances such as dephased GHZ states. Furthermore, our proof directly leads to an entanglement witness which saturates this bound. The witness is applied to thermal GHZ states to prove that the entanglement can be extremely robust to system imperfections. © 2011 American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/112482
ISSN: 10502947
DOI: 10.1103/PhysRevA.83.020303
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

16
checked on Feb 15, 2018

WEB OF SCIENCETM
Citations

16
checked on Jan 30, 2018

Page view(s)

6
checked on Feb 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.