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首页> 外文期刊>Quantum Engineering >Spectrally uncorrelated biphotons generated from “the family of BBO crystal”
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Spectrally uncorrelated biphotons generated from “the family of BBO crystal”

机译：幽灵似地产生不相关的讨论“偏硼酸钡晶体的家庭”

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Summary Spectrally intrinsically uncorrelated biphoton states generated from nonlinear crystals are very important but rare resources for quantum photonics and quantum information applications. Previously, such biphoton states were generated from several kinds of crystals, however, their wavelength ranges and nonlinear efficiencies were still limited for various applications. In order to explore new crystal for wider wavelength range and higher nonlinear efficiency, here we theoretically study the generation of spectrally uncorrelated biphoton states from 14 crystals in the “BBO family,” including BBO, CLBO, KABO, KBBF, RBBF, CBBF, BABF, BiBO, LBO, CBO, LRB4, LCB, YCOB, and GdCOB. They satisfy three kinds of group‐velocity matching condition from near‐infrared to telecom wavelengths. Furthermore, heralded single photons can be generated with a purity as high as 0.98, which is achieved without any narrow filtering. The indistinguishability of photons from independent sources is examined by the Hong‐Ou‐Mandel interference, which results in a visibility of 98% also without any further filtering, that is, photons from different heralded single‐photon sources are highly indistinguishable. Our study may provide single‐photon sources with good performance for quantum information processing at near‐infrared and telecom wavelengths.
机译：总结幽灵似地本质上不相关的讨论从非线性晶体生成非常量子的重要但稀有资源光子学和量子信息的应用程序。以前,这样的讨论了生成从几种晶体,然而,他们的波长范围和非线性效率为各种应用程序仍然有限。探索新的晶体为更广泛的波长范围和高非线性效率,我们在这里从理论上研究了一代的幽灵似地不相关的讨论从14晶体状态“BBO家庭,BBO在内的CLBO、KABOKBBF, RBBF, CBBF、BABF、BiBO、LBO、CBO、LRB4、LCB、YCOB GdCOB。组列车速度匹配条件近红外通信波长。此外,预示着单个光子生成的纯度高达0.98,这是实现没有任何狭窄的过滤。从独立的不可分辨性的光子地理来源审查香港欧曼德尔干扰,从而导致的能见度98%还没有任何进一步的过滤,从不同的预示单光子光子高度的来源。可以提供单光子源与好吗量子信息处理的性能近红外波长和电信。

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