具有可配置寿命的量子光源利用平价时间对称性
Nuo Chen1, Wen-Xiu Li2,3, Yun-Ru Fan4,5
1School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.
Nature communications
|November 27, 2025
概括
我们开发了芯片规模的量子光源,使用平价时间 (PT) 对称来控制光子寿命. 这一突破使量子电路的可配置寿命成为可能,进步了量子计算和通信.
科学领域:
- 量子光学和光子学是量子光学和光子学.
- 固态物理 固态物理
- 量子信息科学是一种量子信息科学.
背景情况:
- 可配置的光子寿命对于计算,通信和计量学中的可扩展量子电路至关重要.
- 现有的量子光源面临着挑战,因为效率和光子寿命之间的权衡.
- 均等时间对称 (PT) 为克服这些局限性提供了一种新的方法.
研究的目的:
- 设计和演示具有可广泛调节的光子寿命的芯片规模量子光源.
- 为了在合的微振解器中利用PT对称性,精确控制光子寿命.
- 为了实现具有可配置寿命的高性能纠光子对生成.
主要方法:
- 采用了两种不同圆周的微复原器之间的PT对称合.
- 控制了微复原器之间的对齐,以调整空洞内光子密度的状态.
- 测量了光子寿命,并描述了产生的能量时间纠的光子对.
主要成果:
- 对于光子寿命 (7.1 ± 1.5 到 129.6 ± 1.9 ps) 实现了近 20 倍的调整范围.
- 证明了在异常点 (EP) 附近的最短寿命.
- 生成的能量-时间纠的光子对具有87.1 ± 1.1%的干扰可见度和g(2) H(0) = 0.069 ± 0.001.
结论:
- PT对称性使高性能量子光源能够具有可配置的光子寿命.
- 展示的设备适用于高速量子通信和可编程量子计算的应用.
- 这项工作为量子连贯断层扫描和其他先进的量子技术开辟了道路.
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