Tsallis entropy and entanglement constraints in multiqubit systems

被引：116
作者：
Kim, Jeong San [1 ]
机构：
[1] Univ Calgary, Inst Quantum Informat Sci, Calgary, AB T2N 1N4, Canada
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 06期
关键词：
QUANTUM; STATE;
D O I：
10.1103/PhysRevA.81.062328
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We show that the restricted shareability and distribution of multiqubit entanglement can be characterized by Tsallis-q entropy. We first provide a class of bipartite entanglement measures named Tsallis-q entanglement, and provide its analytic formula in two-qubit systems for 1 <= q <= 4. For 2 <= q <= 3, we show a monogamy inequality of multiqubit entanglement in terms of Tsallis-q entanglement, and we also provide a polygamy inequality using Tsallis-q entropy for 1 <= q <= 2 and 3 <= q <= 4.
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页数：8
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