Direct measurement of the Wigner function of a one-photon Fock state in a cavity

被引：273
|
作者：
Bertet, P
Auffeves, A
Maioli, P
Osnaghi, S
Meunier, T
Brune, M
Raimond, JM
Haroche, S
机构：
[1] Ecole Normale Super, Dept Phys, Lab Kastler Brossel, F-75231 Paris 05, France
[2] Coll France, F-75231 Paris, France
来源：
PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 20期
关键词：
D O I：
10.1103/PhysRevLett.89.200402
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have measured the complete Wigner function W of the vacuum and of a single-photon state for a field stored in a high-Q cavity. This experiment implements the direct Lutterbach and Davidovich method [L. G. Lutterbach and L. Davidovich, Phys. Rev. Lett. 78, 2547 (1997)] and is based on the dispersive interaction of a single circular Rydberg atom with the cavity field. The nonclassical nature of the single-photon field is exhibited by a region of negative W values. Extensions to other nonclassical cavity field states are discussed.
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页码：200402 / 200402
页数：4
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