Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevLett.102.110404
Title: Positive phase space transformation incompatible with classical physics
Authors: Son, W. 
Kofler, J.
Kim, M.S.
Vedral, V. 
Brukner, Č.
Issue Date: 20-Mar-2009
Citation: Son, W., Kofler, J., Kim, M.S., Vedral, V., Brukner, Č. (2009-03-20). Positive phase space transformation incompatible with classical physics. Physical Review Letters 102 (11) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.102.110404
Abstract: Bell conjectured that a positive Wigner function does not allow violation of the inequalities imposed by local hidden variable theories. A requirement for this conjecture is "when phase space measurements are performed." We introduce the theory-independent concept of "operationally local transformations" which refers to the change of the switch on a local measurement apparatus. We show that two separated parties, performing only phase space measurements on a composite quantum system with a positive Wigner function and performing only operationally local transformations that preserve this positivity, can nonetheless violate Bell's inequality. Such operationally local transformations are realized using entangled ancillae. © 2009 The American Physical Society.
Source Title: Physical Review Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/117122
ISSN: 00319007
DOI: 10.1103/PhysRevLett.102.110404
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

5
checked on Dec 12, 2019

WEB OF SCIENCETM
Citations

7
checked on Dec 12, 2019

Page view(s)

64
checked on Dec 13, 2019

Google ScholarTM

Check

Altmetric


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