在非共线行走参数下转换中产生的纠缠光子态的空间形状

Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-09-01 DOI:10.1088/1464-4266/7/9/001

J. Torres, G. Molina-Terriza, L. Torner

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引用次数: 33

摘要

我们讨论了当相互作用波表现出波印亭矢量漂移时，在非共线几何中自发参数下转换中产生的纠缠光子态的空间形状。我们讨论了这种形状如何依赖于由非共线几何引起的状态椭圆性和Poynting矢量漂移之间的相互作用。特别是，我们研究了行走纠缠光子所表现出的新特征对基于纠缠光子的螺旋光谱实现量子协议的影响。

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The spatial shape of entangled photon states generated in non-collinear, walking parametric downconversion

We address the spatial shape of entangled photon states generated in spontaneous parametric downconversion in non-collinear geometries, when the interacting waves exhibit Poynting vector walk-off. We discuss how such shape depends on the interplay between the state ellipticity caused by the non-collinear geometry, and the Poynting vector walk-off. In particular, we study the impact of the new features exhibited by walking entangled photons on the implementation of quantum protocols based on the spiral spectra of the entangled photons.

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Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society

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