Superposition of Fock states via adiabatic passage in a coupled four-level atom－cavity system
Gong Shang-Qing (龚尚庆)a, Jin Shi-Qi (金石琦)a, Li Ru-Xin (李儒新)a, Zheng Zhen-Xun (郑振勋)b, Xu Zhi-Zhan (徐至展)a
a Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800, China; b Weifang Institute of Supervision and Inspection on Product Quality, Weifang 261031, China
Abstract We have investigated the behaviour of an atom－cavity system via a stimulated Raman adiabatic passage technique in a four-level system, in which two dark states are present. We find, because of the coherent control field, that a superposition of Fock states can be prepared, even when the cavity is initially not in its vacuum state. This method provides a way to generate arbitrary quantum states of a cavity field.
Received: 24 April 2003
Revised: 13 January 2004
Accepted manuscript online:
Fund: Project supported by the Special Foundation for State Major Basic Research Programme of China (Grant No G1999075200), the Key Programme of the National Natural Science Foundation of China (Grant No 10234030), and the Natural Science Foundation of Shanghai
Cite this article:
Gong Shang-Qing (龚尚庆), Jin Shi-Qi (金石琦), Li Ru-Xin (李儒新), Zheng Zhen-Xun (郑振勋), Xu Zhi-Zhan (徐至展) Superposition of Fock states via adiabatic passage in a coupled four-level atom－cavity system 2004 Chinese Physics 13 860
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