Sun, CP , Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA.
部门归属:
Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
We investigate the decoherence of a superposition of symmetric collective internal states of an atomic ensemble due to inhomogeneous coupling to external control fields. For asymptotically large system, we find rootN as the characteristic decoherence rate scale with N being the total number of atoms. Our results shed new light on attempts for realizing quantum information processing and storage with atomic ensembles.
