Journal of Physics A: Mathematical and Theoretical PAPER • OPEN ACCESS Diagonal quantum discord Recent citations - Correlations for a Family of Two-Ququart Quantum States To cite this article: Zi-Wen Liu et al 2019 J. Phys. A: Math. Theor. 52 135301 H. Parsian and A. Akhound - One-Shot Operational Quantum Resource Theory Zi-Wen Liu et al View the article online for updates and enhancements. - Measure of quantum correlations that lies approximately between entanglement and discord Aaron Szasz This content was downloaded from IP address 75.161.45.188 on 02/04/2020 at 16:55 IOP Journal of Physics A: Mathematical and Theoretical J. Phys. A: Math. Theor. Journal of Physics A: Mathematical and Theoretical J. Phys. A: Math. Theor. 52 (2019) 135301 (20pp) https://doi.org/10.1088/1751-8121/ab0774 52 2019 © 2019 IOP Publishing Ltd Diagonal quantum discord JPHAC5 Zi-Wen Liu1,2,3,4 , Ryuji Takagi1,3 and Seth Lloyd2,3,5 1 Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, 135301 MA 02139, United States of America 2 Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States of America Z-W Liu et al 3 Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States of America 4 Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada Diagonal quantum discord 5 Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States of America Printed in the UK E-mail:
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[email protected] JPA Received 14 August 2018, revised 8 January 2019 Accepted for publication 15 February 2019 Published 1 March 2019 10.1088/1751-8121/ab0774 Abstract Quantum discord measures quantum correlation by comparing the quantum Paper mutual information with the maximal amount of mutual information accessible to a quantum measurement.