Trichromatic phase dependence of squeezing in resonance fluorescence (6 pages)
Trichromatic phase dependence of squeezing in resonance fluorescence (6 pages)
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DOI：
10.1103/physreva.77.063809
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发表时间：
2008-06
期刊：
影响因子：
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通讯作者：
Xiangming Hu;Xuehua Zhang
中科院分区：
文献类型：
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作者：
Xiangming Hu;Xuehua Zhang
我们研究了三基色激发场驱动的二能级原子共振荧光相位积分中的量子噪声。结果表明，虽然边带激励分量比中心分量弱得多，但噪声谱主要依赖于边带分量相对于中心分量的相对相位之和。当我们用Mollow边带跃迁调谐双光子共振时的激发边带，并将相位和设置为时，同相正交中的边带压缩几乎与单色情况下相同。一旦相位和被设置为零，压缩就会被破坏。从三基色成分诱导的双光子发射过程以及这些过程之间的干涉解释了相关的机制。DOI：10.1103/PhysRevA.77.063809
We investigate the quantum noise in phase quadratures of resonance fluorescence from a two-level atom driven by a trichromatic exciting field. It is shown that the noise spectra are crucially dependent on the sum of relative phases of the sideband components compared to the central component although the sideband exciting components are much weaker than the central component. When we tune the exciting sidebands on two-photon resonance with the Mollow sideband transitions and set the phase sum to , sideband squeezing in the in-phase quadrature remains almost the same as in the monochromatic case. Once the phase sum is set to zero, the squeezing is destroyed. The responsible mechanism is explained in terms of two-photon emission processes induced by the trichromatic components and the interference between these processes. DOI: 10.1103/PhysRevA.77.063809