Author:
Li Donghao,Huang Lianghui,Bian Guoqi,Miao Jie,Chen Liangchao,Meng Zengming,Han Wei,Wang Pengjun
Abstract
We report a novel method to prepare a mixture of 40K Fermi gas having an equal population of the two ground magnetic spin states confined in an optical dipole trap, in the presence of an noisy quantization (magnetic) field. We realize the equal population mixture by applying a series of RF pulses. We observe the dependence of the population distribution between two spin states on the number of the applied RF pulses and find that the decoherence effects leading to the population fluctuations are overcome by the high number of RF pules. Our demonstrated technique can be potentially used in the precision measurement experiments with ultracold gases in noisy environments.
Subject
General Physics and Astronomy