Decomposition Properties of Quantum Discord*Supported by Research Fund, Kumoh National Institute of Technology. (1st April 2016)

• Record Type: Journal Article
• Authors: Kim, Sunho; Wu 武, Jun-De 俊德; Cho, Minhyung
• Is Part Of: Communications in theoretical physics. Volume 65:Number 4(2016:Apr.)
• Page Start: 441
• Page End: 446
• Publication Date: 2016-04-01
• Subjects: 03.65.Ta -- 03.65.Yz -- 03.67.−a; quantum state -- quantum measurement -- quantum discord; Physics -- Periodicals; 530.105
• DOI: 10.1088/0253-6102/65/4/441
• Languages: English
• ISSNs: 0253-6102

Abstract

Abstract: The quantum discord was introduced by Ollivier, Zurek, Henderson, and Vedral as an indicator of the degree of quantumness of mixed states. In this paper, we provide a decomposition condition for quantum discord. Moreover, we show that under the condition, the quantum correlations between the quantum systems can be captured completely by the entanglement measure. Finally, we present examples of our conclusions.