Detection of two-mode spatial quantum states of light by electro-optic integrated directional couplers
Detection of two-mode spatial quantum states of light by electro-optic integrated directional couplers
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DOI：
10.1364/josab.32.001165
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发表时间：
2015-06-01
影响因子：
1.9
通讯作者：
Linares, Jesus
中科院分区：
文献类型：
--
作者：
Barral, David;Thompson, Mark G.;Linares, Jesus
我们研究了光的双模空间量子态的操纵和检测，采用可重构集成器件，该器件内置在具有Kolgelnik -Schmidt配置的电光材料中，具有比其他现有方案更高的制造缺陷容错性和更大的集成密度。SU(2)变换在引导空间模式上实现，通过空间双模纯差检测重建光场强度量子概率分布，通过弱值重建全光场强度波函数。这种方法可以很容易地扩展到空间n模输入量子态。该方法除了可用于表征光量子态外，还可用于测量所谓的广义量子偏振。(C) 2015美国光学学会
We study both manipulation and detection of two-mode spatial quantum states of light by means of a reconfigurable integrated device built in an electro-optical material in a Kolgelnik -Schmidt configuration, which provides higher error tolerance to fabrication defects and larger integration density than other current schemes. SU(2) transformations are implemented on guided spatial modes in such a way that reconstruction of both the optical field-strength quantum probability distribution, via spatial two-mode homodyne detection, and the full optical field-strength wavefunction, by means of weak values, are carried out. This approach can be extended easily to spatial N-mode input quantum states. Apart from its usefulness to characterize optical quantum states, the approach also can be applied to the measurement of the so-called generalized quantum polarization. (C) 2015 Optical Society of America