Journal
PHYSICAL REVIEW A
Volume 79, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.054309
Keywords
information theory; matrix algebra; quantum computing; quantum entanglement; teleportation
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Funding
- Kyung Hee University Research Fund [KHU-20080578]
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The monogamy inequality in terms of the concurrence, called the Coffman-Kundu-Wootters inequality [V. Coffman , Phys. Rev. A 61, 052306 (2000)], and its generalization [T. J. Osborne and F. Verstraete, Phys. Rev. Lett. 96, 220503 (2006)] hold on general n-qubit states including mixed ones. In this Brief Report, we consider the monogamy inequalities in terms of the fully entangled fraction and the teleportation fidelity. We show that the monogamy inequalities do not hold on general mixed states, while the inequalities hold on n-qubit pure states.
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