Quantum discord, local operations, and Maxwell's demons

Aharon Brodutch*, Daniel R. Terno

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

95 Citations (Scopus)

Abstract

Quantum discord was proposed as a measure of the quantumness of correlations. There are at least three different discordlike quantities, two of which determine the difference between the efficiencies of a Szilard's engine under different sets of restrictions. The three discord measures vanish simultaneously. We introduce an easy way to test for zero discord, relate it to the Cerf-Adami conditional entropy and show that there is no simple relation between the discord and the local distinguishability.

Original languageEnglish
Article number062103
Pages (from-to)1-6
Number of pages6
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume81
Issue number6
DOIs
Publication statusPublished - 4 Jun 2010

Fingerprint

Dive into the research topics of 'Quantum discord, local operations, and Maxwell's demons'. Together they form a unique fingerprint.

Cite this