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响应光和无法从hBN中的连贯驱动的B中心中分辨的光子
Domitille Gérard1, Stéphanie Buil1, Kenji Watanabe2
1Université Paris-Saclay, UVSQ, CNRS, GEMaC, Versailles, France.
Nature communications
|February 11, 2026
概括
六角化 (hBN) 中的光学活性B中心是有前途的单光子源. 研究人员开发了一种新的共振激发和检测方法,证明了它们对量子信息应用的潜力.
科学领域:
- 固态量子发射器是一种固态量子发射器.
- 量子光子学 量子光子学
- 材料科学是一种材料科学.
背景情况:
- 六角化 (hBN) 的光学活性缺陷是有吸引力的单光子发射器,因为它们的光物理特性和集成能力.
- 在hBN中的B中心提供狭窄的线宽,低波长传播和可控制的定位,使它们成为集成量子光子学的理想选择.
- 以前的局限性包括非共振激发/检测,原因是难以拒绝反射激光,从而阻碍了对它们的连贯性的利用.
研究的目的:
- 在hBN中实施共振激发和检测B中心.
- 为了克服激光光反射对增强量子协议的挑战.
- 为了证明这些发射器在集成量子信息应用中的潜力.
主要方法:
- 在混合金属电介质结构中整合窄线宽发射器.
- 实施交叉极化激光排斥技术.
- 对共振散射光子和光学连贯性信号的观察.
主要成果:
- 从hBN中的B中心成功地观测了共振散射光子.
- 光学连贯性的实验特征,包括Mollow三重体 (cw模式) 和Hong-Ou-Mandel干扰 (脉冲模式).
- 测量了两个发射器的高两光子干扰可见度 (0.93和0.92),证实了它们的量子连贯性.
结论:
- 开发的交叉极化激光排斥方法使得共振激发和检测HBN中的B中心成为可能.
- 这些结果凸显了hBN中的B中心作为强大的量子发射器,用于集成量子信息处理的巨大潜力.
- 证明的连贯性质为使用这些固态发射器的先进量子协议铺平了道路.
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