通过时间量子除来探测亚秒级延迟
Fabrizio Sgobba1, Andrea Andrisani1, Stefano Dello Russo1
1Italian Space Agency (ASI), Centro Spaziale 'Giuseppe Colombo', Località Terlecchia, 75100 Matera, Italy.
Sensors (Basel, Switzerland)
|September 28, 2023
概括
我们使用量子干涉测量开发了一种敏感的单光子传感器. 这种技术提高了用于生物传感和光学计量学应用的相位灵敏度.
科学领域:
- 量子光学是一种量子光学.
- 光子学 是一个光子学.
- 光学传感传感器是什么?
背景情况:
- 传统的Hong-Ou-Mandel (HOM) 干涉测量是一种强大的单光子技术,但对相位不匹配不敏感.
- 现有的方法缺乏生物传感和光学计量等应用所需的灵敏度,特别是在低光条件下.
研究的目的:
- 开发一种高度灵敏的单光子传感器,用于测量双折引起的延迟.
- 为了提高HOM干扰度的灵敏度,同时保持其坚固性.
- 为了实现低光应用的相位敏感测量.
主要方法:
- 实现了一个基于通路的Hong-Ou-Mandel干扰测量的时间量子 eraser.
- 引入了一种依赖于偏振的后光束分离器延迟,以恢复相位敏感的边缘.
- 在电信范围 (1550 nm) 操作传感器.
主要成果:
- 在 2 × 10^4 秒的整合时间内,获得了 4 attosecond (as) 的灵敏度.
- 展示了一种相位敏感的时间量子 eraser.
- 保持了原始HOM干扰仪的坚固性,并提高了灵敏度.
结论:
- 开发的传感器提供了高灵敏度,用于测量双断引发的延迟.
- 这种技术对生物传感和光学计量学的应用具有前景,这些应用需要高灵敏度和低光强度.
- 带有时间量子 eraser 的通路 HOM 干扰度为先进的光学传感提供了一个强大的平台.
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