摘要We propose a scheme for direct measurement of the Wigner function for a cavity mode. In the scheme the cavity field resonantly interacts with an atomic ensemble. Under certain conditions, the state of the cavity mode is transferred to the atomic system. After a displacement the measurement of the parity of the atomic excitation number directly yields the Wigner function of the initial state of the cavity mode.
Abstract：We propose a scheme for direct measurement of the Wigner function for a cavity mode. In the scheme the cavity field resonantly interacts with an atomic ensemble. Under certain conditions, the state of the cavity mode is transferred to the atomic system. After a displacement the measurement of the parity of the atomic excitation number directly yields the Wigner function of the initial state of the cavity mode.
ZHENG Shi-Biao. Scheme for Direct Measurement of the Wigner Function via Resonant Interaction[J]. 中国物理快报, 2008, 25(9): 3123-3125.
ZHENG Shi-Biao. Scheme for Direct Measurement of the Wigner Function via Resonant Interaction. Chin. Phys. Lett., 2008, 25(9): 3123-3125.
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