光子学
四波混频
硅光子学
量子纠缠
光子
物理
接口
量子网络
量子信息
量子技术
量子
光电子学
计算机科学
非线性系统
非线性光学
光学
量子力学
开放量子系统
计算机硬件
作者
Lan-Tian Feng,Yujie Cheng,Xiao-Zhuo Qi,Zhi-Yuan Zhou,Ming Zhang,Daoxin Dai,Guang‐Can Guo,Xi-Feng Ren
出处
期刊:Optica
[The Optical Society]
日期:2023-06-02
卷期号:10 (6): 702-702
被引量:2
标识
DOI:10.1364/optica.476712
摘要
Cryogenic integrated nonlinear photonics can provide fundamental building blocks for scalable photonic quantum computing and optical interfacing among different platforms. Here, we investigate the spontaneous four-wave mixing effect in an integrated silicon waveguide with cryogenic operating conditions (4 K) and employ the system to generate the entangled photon-pair source, one of the key elements of photonic quantum information applications. We experimentally prove that even at cryogenic temperatures, the four-wave mixing effect in silicon waveguides is still an effective method to generate quantum photonic sources. The cryogenic photon-pair source is verified over multiple frequency channels within a bandwidth of ∼2THz. Furthermore, the source is used to generate high-quality frequency-multiplexed energy–time entangled states. Our results will advance the development of cryogenic nonlinear photonics and scalable integrated photonics for quantum information processing.
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