3 papers
quant-ph2006
Topological structures of adiabatic phase for multi-level quantum systems
Zheng-Xin Liu, Xiao-Ting Zhou, Xin Liu +2
The topological properties of adiabatic gauge fields for multi-level (three-level in particular) quantum systems are studied in detail. Similar to the result that the adiabatic gau…
cond-mat.mes-hall2005
Classical and quantum depinning of a domain wall with a spin-polarized current
Xin Liu, Xiong-Jun Liu, Zheng-Xin Liu
We study in detail the classical and quantum depinning of a domain wall (DW) induced by a fast-varying spin-polarized current. By confirming the adiabatic condition for calculating…
quant-ph2005
Possibility of Inhomogeneous Coupling Leading to Decoherence in an Electromagnetically-Induced-Transparency Quantum-Memory Process
Xiong-Jun Liu, Zheng-Xin Liu, Xin Liu +1
The effect of inhomogeneous coupling between three-level atoms and external light fields is studied in the electromagnetically induced transparency (EIT) quantum memory techqnique.…