Particle-hole entanglement of ultracold atoms in an optical lattice

被引：0
作者：
Ng, H. T. [1 ]
机构：
[1] Tsinghua Univ, Inst Interdisciplinary Informat Sci, Ctr Quantum Informat, Beijing 100084, Peoples R China
来源：
PHYSICAL REVIEW A | 2013年 / 88卷 / 02期
基金：
中国国家自然科学基金;
关键词：
MOTT INSULATOR; SUPERFLUID; TRANSITION; GAS;
D O I：
10.1103/PhysRevA.88.023621
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the ground state of two-component bosonic atoms in a one-dimensional optical lattice. By applying an external field to the atoms at one end of the lattice, the atoms are transported and becomes localized at that site. The holes are then created in the remaining sites. The particle-hole superpositions are produced in this process. We investigate the entanglement entropy between the atoms in the two different parts of a lattice. A large degree of particle-hole entanglement is generated in the ground state. The particle-hole quantum correlations can be probed by the two-site parity correlation functions. The transport properties of the low-lying excited states are also discussed.
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页数：5
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