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首页> 美国政府科技报告 >Compensated Crystal Assemblies for Type-II Entangled Photon Generation in Quantum Cluster States.
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Compensated Crystal Assemblies for Type-II Entangled Photon Generation in Quantum Cluster States.

机译：用于量子簇状态中II型纠缠光子生成的补偿晶体组件。

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Spontaneous downconversion yields photons for Quantum-Optical-Gate development though their generation is probabilistic. Optimized efficiency requires control over the spectral wavefunction, generally achieved via spectral filtering which sacrifices most downconverted photons. Selecting crystal parameters to address the issue has been demonstrated, but no natural media enable this for 800 nm applications with optimal detection. Synthesizing parameters with super-lattices of known crystals was also analyzed but two- crystal experiments were insufficient to exploit it. Prototype twelve-crystal- assemblies have now been fabricated and the first results are reported here. We review implications for further work and discuss how methods described here enhance efficiency in applications of entangled photons requiring multi-crystal sources, such as cluster states, entanglement swapping, and teleportation.

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