Abstract We propose a scheme to observe the decoherence of a mesoscopic superposition of two coherent states in the motion of a trapped ion. In the scheme the ion is excited by two perpendicular lasers tuned to the ion transition. The decoherence is revealed by the decrease of the correlation between two successive measurements of the internal state of the ion after relevant laser－ion interaction.
Received: 09 January 2004
Revised: 25 May 2004
Accepted manuscript online:
PACS:
37.10.Vz
(Mechanical effects of light on atoms, molecules, and ions)
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
Fund: Project supported by the Fok Ying Tung Education Foundation, China (Grant No 81008) and the National Natural Science Foundation of China (Grant Nos 60008003 and 10225421).
Cite this article:
Zheng Shi-Biao (郑仕标) Measurement of the decoherence of a mesoscopic superposition of motional states of a trapped ion 2004 Chinese Physics 13 1707
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