Concurrence and fidelity of a Bose–Fermi mixture in a one-dimensional optical lattice
Concurrence and fidelity of a Bose–Fermi mixture in a one-dimensional optical lattice
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DOI：
10.1088/0953-8984/20/23/235236
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发表时间：
2007-08
期刊：
影响因子：
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通讯作者：
W. Ning;S. Gu;Yuguang Chen;Chang-qin Wu;Hai-Qing Lin
中科院分区：
文献类型：
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作者：
W. Ning;S. Gu;Yuguang Chen;Chang-qin Wu;Hai-Qing Lin
我们研究了一维光学晶格中玻色-费米混合物的基态保真度和纠缠。结果表明，保真度能够指示系统的Luttinger液相态、密度波相和相分离态之间的量子相变，而作为纠缠度量的并发度可以用来表示密度波相和伊辛相之间的跃迁。
We study the ground-state fidelity and entanglement of a Bose–Fermi mixture loaded in a one-dimensional optical lattice. It is found that the fidelity is able to signal quantum phase transitions between the Luttinger liquid phase, the density-wave phase, and the phase separation state of the system, and the concurrence, as a measure of the entanglement, can be used to signal the transition between the density-wave phase and the Ising phase.