Phys. Rev. A 80, 044102 (2009) [4 pages]Classical and quantum correlations under decoherenceReceived 7 May 2009; published 7 October 2009 Recently some authors have pointed out that there exist nonclassical correlations which are more general, and possibly more fundamental, than entanglement. For these general quantum correlations and their classical counterparts, under the action of decoherence, we identify three general types of dynamics that include a peculiar sudden change in their decay rates. We show that, under suitable conditions, the classical correlation is unaffected by decoherence. Such dynamic behavior suggests an operational measure of both classical and quantum correlations that can be computed without any extremization procedure. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.044102
DOI:
10.1103/PhysRevA.80.044102
PACS:
03.65.Ta, 03.65.Yz, 03.67.Mn
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.