OBSERVATION OF SQUEEZED STATES GENERATED BY 4-WAVE MIXING IN AN OPTICAL CAVITY
OBSERVATION OF SQUEEZED STATES GENERATED BY 4-WAVE MIXING IN AN OPTICAL CAVITY
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DOI：
10.1103/physrevlett.55.2409
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发表时间：
1985-01-01
影响因子：
8.6
通讯作者：
VALLEY, JF
中科院分区：
文献类型：
--
作者：
SLUSHER, RE;HOLLBERG, LW;VALLEY, JF
在光腔中，由于Na原子的非简并四波混频，产生了电磁场的压缩态。腔内的光学噪声主要由真空涨落和抽运的Na原子自发辐射的一小部分组成，在光场的一个正交放大，在另一个正交去放大。这些正交分量由平衡零差探测器测量。去放大后的正交图中的总噪声电平降至真空噪声电平以下。
Squeezed states of the electromagnetic field have been generated by nondegenerate four-wave mixing due to Na atoms in an optical cavity. The optical noise in the cavity, comprised of primarily vacuum fluctuations and a small component of spontaneous emission from the pumped Na atoms, is amplified in one quadrature of the optical field and deamplified in the other quadrature. These quadrature components are measured with a balanced homodyne detector. The total noise level in the deamplified quadrature drops below the vacuum noise level.