STIRAP schemes for atomic Bose-Einstein condensates

International Conference on the Frontiers in Atomic, Molecular, and Optical Physics 2016

Thomasen, Andreas M. D.^1 ; Byrnes, Tim^2,3

New York University, 1555 Century Avenue, Pudong, Shanghai

200122, China^1

National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo

101-8430, Japan^2

NYU-ECNU Institute of Physics at NYU Shanghai, 3663 Zhongshan Road North, Shanghai

200062, China^3

关键词: Adiabatic theorem;    Arbitrary rotation;    Atomic Bose-Einstein condensate;    Bose-Einstein condensates;    Coherent control;    Population transfer;    Stimulated Raman adiabatic passage;    Unitary rotation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/752/1/012004/pdf
DOI  :  10.1088/1742-6596/752/1/012004

来源: IOP

【 摘 要 】

In coherent control of Bose-Einstein condensates (BEC) the major limitation to successful high fidelity transfer using optical Raman transitions is spontaneous emission of radiation and the decoherence that this causes. We present a scheme based on stimulated Raman adiabatic passage (STIRAP) designed specifically for Rubidium 87. STIRAP is a method of population transfer that relies on the adiabatic theorem of quantum mechanics. Instead of transferring population between Hamiltonian ground states, one adiabatically evolves the ground states into some desired superposition. We show that one may thereby implement arbitrary rotations of spinor BECs with extremely high fidelities. Our simulations show that given a BEC with N = 104atoms, we may do an arbitrary unitary rotation with an infidelity of about 10-7that takes approximately 100 ns.