Project supported by the National Natural Science Foundation of China (Grant Nos. 11075099,10974124,and 11105087)
We investigate the strongly interacting lattice Bose gases on a lattice with two-body interaction of nearest neighbors characterized by pair tunneling. The excitation spectrum and the depletion of the condensate of la...
supported by the National Natural Science Foundation of China (Grant Nos. 11075099, 11047167, and 11105087);the Programme of State Key Laboratory of Quantum Optics and Quantum Optics Devices (Grant No. KF201002);the National Fundamental Fund of Personnel Training (Grant No. J1103210);the Youth Science Foundation of Shanxi Province of China (Grant No. 2010021003-2)
In this work we investigated the geometric phases of a qubit-oscillator system beyond the conventional rotating- wave approximation. We find that in the limiting of weak coupling the results coincide with that obtaine...