1k citations · 2.2k across the 11 of their papers we have counts for
18 papers
On A Proper Definition of Spin Current
Junren Shi, Ping Zhang, Di Xiao +1
The conventional definition of spin current is incomplete and unphysical in describing spin transport in systems with spin-orbit coupling. A proper and measurable spin current is e…
Compression of Atomic Phase Space Using an Asymmetric One-Way Barrier
M. G. Raizen, A. M. Dudarev, Qian Niu +1
We show how to construct asymmetric optical barriers for atoms. These barriers can be used to compress phase space of a sample by creating a confined region in space where atoms ca…
Charge-Hall effect driven by spin force: reciprocal of the spin-Hall effect
Ping Zhang, Qian Niu
A new kind of charge-Hall effect is shown. Unlike in the usual Hall effect, the driving force in the longitudinal direction is a spin force, which may originate from the gradient o…
Quantum Chaos of Bogoliubov Waves for a Bose-Einstein Condensate in Stadium Billiards
Chuanwei Zhang, Jie Liu, Mark G. Raizen +1
We investigate the possibility of quantum (or wave) chaos for the Bogoliubov excitations of a Bose-Einstein condensate in billiards. Because of the mean field interaction in the co…
Adiabatic Geometric Phase for a General Quantum States
Biao Wu, Jie Liu, Qian Niu
A geometric phase is found for a general quantum state that undergoes adiabatic evolution. For the case of eigenstates, it reduces to the original Berry's phase. Such a phase is ap…
Dynamical generation of two-dimensional matter-wave discrete solitons
Artem M. Dudarev, Roberto B. Diener, Qian Niu
We suggest a method to experimentally obtain two-dimensional matter-wave discrete solitons with a {\it self-repulsive} BEC in optical lattices. At the edge of the Brillouin zone, a…