ZhETF, Vol. 147,
No. 1,
p. 14 (January 2015)
(English translation - JETP,
Vol. 120, No. 1,
p. 9,
January 2015
available online at www.springer.com
)
RELATING QUANTUM DISCORD WITH THE QUANTUM DENSE CODING CAPACITY
Wang Xin, Qui Liang, Li Song, Zhang Chi, Ye Bin
Received: August 2, 2014
DOI: 10.7868/S0044451015010022
We establish the relations between quantum discord and the quantum dense coding capacity in (n+1)-particle quantum states. A necessary condition for the vanishing discord monogamy score is given. We also find that the loss of quantum dense coding capacity due to decoherence is bounded below by the sum of quantum discord. When these results are restricted to three-particle quantum states, some complementarity relations are obtained.
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