Parity states in the one-atom maser
Parity states in the one-atom maser
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DOI：
10.1016/0030-4018(93)90254-3
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发表时间：
1993-07
影响因子：
2.4
通讯作者：
B. Englert;N. Sterpi;H. Walther
中科院分区：
文献类型：
--
作者：
B. Englert;N. Sterpi;H. Walther
本文提出了一个确定高Q谐振腔中一个优先模光子场宇称的实验。偶宇称表示光子数等于0、2、4或任何其他偶数;同样，奇宇称态是具有任何奇数光子的状态的混合。宇称测量可以在标准单原子脉塞操作中泵浦谐振腔的同时进行。从理论上研究了宇称期望值的时间依赖性，并提出了实验验证，这将作为对描述腔场向热平衡弛豫和泵浦过程的标准模型的检验。宇称期望值和维格纳相空间函数之间的联系被召回;维格纳函数的中心值等于平均宇称的两倍，因此它是一个可测量的量。
An experiment to determine the parity of the photon field of one privileged mode in a high-Qresonator is proposed. Even parity indicates that the photon number equals zero, two, four or any other even integer; likewise, odd parity states are mixtures of states with any odd number of photons. The parity measurement can be performed while the resonator is pumped as in standard one-atom maser operation. The time dependence of the parity expectation value is studied theoretically, and we suggest its experimental verification, which would serve as a test of the standard models describing both the relaxation of the cavity field toward thermal equilibrium and the pumping process. The connection between parity expectation values and Wigner's phase space function is recalled; the central value of the Wigner function equals twice the mean parity and it is, therefore, a measurable quantity.