Many atom quantum state manipulation with bose-einstein condensed atoms

Xiaoting Zhou, Xiong-Jun Liu, Hui Jing +2 more

We show the quantum state transfer technique in two-color photoassociation (PA) of a Bose-Einstein condensate, where a quantized field is used to couple the free-bound transition from atom state to excited molecular state. Under the weak excitation condition, we find that quantum states of the quantized field can be transferred to the created molecular condensate. The feasibility of this technique is confirmed by considering the atomic and molecular decays discovered in the current PA experiments. The present results allow us to manipulate quantum states of molecules in the photoassociation of a Bose-Einstein condensate.

Nick P. Proukakis

Shengwang Du

Mark A. Kasevich

Summary form only given. Wc report on the experimental studies on atom quantum state manipulation.

Chandra Raman

Xia Lin, Xu Xu, Rui Guo +7 more

Manipulation of the quantum state by the Majorana transition in a spinor Bose-Einstein condensed system has been realized by altering the rotation frequency of the magnetic field direction. This kind of manipulation method has no limitation on the transition speed in principle, and the system is well closed. When this method is used on a pulsed atom laser, a multicomponent spinor atom laser is generated. We demonstrate that the experimental results agree with the theoretical prediction.