Testing spectral filters as Gaussian quantum optical channels.

Testing spectral filters as Gaussian quantum optical channels.
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将光谱滤波器测试为高斯量子光通道。

DOI：
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发表时间：
2010
期刊：
Optics Letters
影响因子：
3.6
通讯作者：
C. Silberhorn
C. Silberhorn
中科院分区：
物理与天体物理2区
文献类型：
--
作者：
K. Laiho;A. Christ;K. Cassemiro;C. Silberhorn

文献摘要

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实验研究了频率相关的高斯信道中多模辐射场的模式特性。利用联合归一化相关函数，对传统的参数下变换源出射的孪生光束进行谱滤波处理后，研究了其模式特性的变化。虽然滤波减少了光谱模式的数量，但它也导致了明显的模式失配，这破坏了孪生光束之间的完美光子数关联，并影响了预报态的模式特性。
We experimentally investigate the mode characteristics of multimode radiation fields propagating through frequency-dependent Gaussian channels. After manipulating the twin beams emitted from a conventional parametric downconversion source via spectral filtering, we study the changes in their mode characteristics, utilizing the joint normalized correlation functions. While filtering reduces the number of spectral modes, it also leads to an apparent mode mismatch, which destroys the perfect photon-number correlation between the twin beams, and influences the mode properties of heralded states.