从集成的独立分子中无法区分的单个光子在芯片上的量子干扰
Tailin Huang1,2, Miaomiao Xu1,2, Wei Jin1,2
1School of Physics, Wuhan National Laboratory for Optoelectronics, Institute for Quantum Science and Engineering and Hubei Key Laboratory of Gravitation and Quantum Physics, Huazhong University of Science and Technology, Wuhan, China.
Nature nanotechnology
|November 5, 2025
概括
研究人员创建了一个分子量子光子芯片,用于可扩展的量子计算. 他们从独立分子中实现了单个光子的高可见度量子干扰,证明了通向通用量子处理器的道路.
科学领域:
- 量子信息科学 量子信息科学
- 纳米光子学 纳米光子学
- 分子光子学 分子光子学
背景情况:
- 可扩展的光学量子信息处理需要整合不可分辨的单个光子的独立通道.
- 固态单光子发射器必须具有相同的生命限度过渡,这一挑战由纳米制造表面噪声的光谱扩散加剧.
研究的目的:
- 开发一个分子量子光子芯片,使单个光子与独立分子无法区分的芯片上的量子干扰成为可能.
- 为了证明从分子集成到波导中没有纳米制造的稳定,寿命有限的过渡.
- 展示可扩展的光学通用量子处理器和波导量子电动学的战略.
主要方法:
- 在单晶有机纳米板中嵌入分子并将其与单模波导集成.
- 使用斯塔克调来调整波导合分子的频率.
- 在芯片上进行Hong-Ou-Mandel量子干扰实验.
主要成果:
- 在芯片上演示了Hong-Ou-Mandel量子干扰,使无法从独立分子中区分单个光子.
- 在频率调节后,在与单独的波导相合的分子中,实现了超过0.97的干扰可见度.
- 对于具有可控频率差异的分子,观察到超过100μs的量子击中干扰,表明高单光子纯度和长连贯性.
结论:
- 分子量子光子芯片为构建可扩展的光学通用量子处理器提供了可行的策略.
- 这个平台对研究波导量子电动力学具有前景,通过光子电路相互连接的相同单个发射器.
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