Proposal for Direct Measurement of the Wigner Function of a Cavity Field via Raman Coupling
ZHENG Shi-Biao1,2, ZHU Xi-Wen2
1Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002
2Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
Proposal for Direct Measurement of the Wigner Function of a Cavity Field via Raman Coupling
ZHENG Shi-Biao1,2;ZHU Xi-Wen2
1Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002
2Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
Abstract： We propose a scheme for the reconstruction of a cavity field state. In the scheme the cavity field is first displaced by a microwave source, and then couples with a three-level A-type atom in a Raman manner. After an appropriate interaction time the measurement of the difference between the probabilities of the atom being in two ground states directly yields the Wigner function for the field state. The scheme can be easily generalized to measure the Wigner function of an entangled state of two spatially separated single-mode cavities.
ZHENG Shi-Biao;ZHU Xi-Wen. Proposal for Direct Measurement of the Wigner Function of a Cavity Field via Raman Coupling[J]. 中国物理快报, 2000, 17(12): 882-884.
ZHENG Shi-Biao, ZHU Xi-Wen. Proposal for Direct Measurement of the Wigner Function of a Cavity Field via Raman Coupling. Chin. Phys. Lett., 2000, 17(12): 882-884.
2000, Vol. 17 
