QUANTUM-THEORY OF OPTICAL HOMODYNE AND HETERODYNE-DETECTION
QUANTUM-THEORY OF OPTICAL HOMODYNE AND HETERODYNE-DETECTION
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DOI：
10.1080/09500348714550811
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发表时间：
1987-06-01
影响因子：
1.3
通讯作者：
GARDINER, CW
中科院分区：
文献类型：
--
作者：
COLLETT, MJ;LOUDON, R;GARDINER, CW
对于信号场为任意量子态，本振子场为高激发相干态的输入，建立了平衡零差和外差探测理论。在相干信号的特殊情况下，导出了光计数矩生成函数的精确表达式。对于更一般的信号，光计数概率分布的前两个时刻被确定。的时刻的例子与混沌噪声分量的相干信号进行评估，并为压缩光来自简并和非简并参量放大器。直接检测的相应时刻，以便可以进行比较。Kelley-Kleiner光电计数分布公式适用于平衡探测方案。光束的特征始终在于它们的能量通量，因此该理论描述了稳态实验。
The theory of balanced homodyne and heterodyne detection is developed for inputs in which the signal field is in an arbitrary quantum state and the local-oscillator field is in a highly excited coherent state. Exact expressions are derived for the photocount moment-generating functions in the special case of a coherent signal. For more general signals, the first two moments of the photocount probability distribution are determined. The moments are evaluated for the examples of a coherent signal with a chaotic noise component, and for squeezed light derived from a degenerate and from a non-degenerate parametric amplifier. The corresponding moments for direct detection are obtained so that comparisons can be made. The Kelley-Kleiner photocount distribution formula is adapted to balanced detection schemes. Light beams are characterized throughout by their energy fluxes, and the theory accordingly describes steady-state experiments.