一个连续波光子对源在L频段运行,通过在双断裂的ZBLAN纤维中自发混合四波波
Taeho Woo1, Kyungtaek Lee2, Namwook Joe1
1School of Electrical and Computer Engineering, University of Seoul, Seoul, 02504, South Korea.
Scientific reports
|November 25, 2025
概括
研究人员开发了一个连续波 (CW) 光子对源在L频段使用自发四波混合 (SFWM) 在ZBLAN纤维. 这种高效的量子光源展示了ZBLAN光纤.
科学领域:
- 量子光学是一种量子光学.
- 光纤光学是指光纤的使用.
- 光子学 是一个光子学.
背景情况:
- 连续波 (CW) 光子对源对于量子通信和信息处理至关重要.
- 自发四波混合 (SFWM) 是产生光子对的关键非线性光学过程.
- 兹布兰 (ZBLAN) 纤维具有独特的非线性特性,适合光学应用.
研究的目的:
- 为了实现在L频段运行的CW光子对源.
- 通过SFWM调查使用双断层ZBLAN纤维进行高效的光子对生成的可行性.
- 为了描述生成的光子对的量子光学特性.
主要方法:
- 采用了与III型相匹配的SFWM工艺,在短长的双断层ZBLAN纤维中使用.
- 用1310nm的CW激光送光纤,将光子与缓慢轴对齐.
- 分析了相匹配曲线和联合光谱强度;测量了巧合与偶然的比率和光子对亮度.
主要成果:
- 成功生成了信号 (1117 nm) 和置 (1578 nm) 光子对.
- 取得的最大巧合与意外的比率为22.
- 获得的光子对亮度为3.16 × 10^4对/s/nm/mW.
结论:
- 使用ZBLAN光纤成功实现了L频段CW光子对源的成功实现.
- 证实了双断裂ZBLAN纤维中的Type-III相匹配SFWM用于量子光生成的效率.
- 强调ZBLAN纤维是开发高效量子光源的有希望的平台.
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