Synchronization and Phase Shaping of Single Photons with High-Efficiency Quantum Memory
具有高效量子存储器的单光子同步和相位整形
高効率量子メモリを備えた単一光子の同期と位相整形
고효율 양자 메모리를 사용한 단일 광자의 동기화 및 위상 형성
Sincronización y modelado de fase de fotones individuales con memoria cuántica de alta eficiencia
Synchronisation et mise en forme de phase de photons uniques avec une mémoire quantique à haute efficacité
Синхронизация и фазообразование одиночных фотонов с высокоэффективной квантовой памятью
Keyu Su 苏柯宇 ¹, Yunfei Wang 王云飞 ¹, Shanchao Zhang 张善超 ¹ ², Zhuoping Kong 孔焯平 ¹, Yi Zhong 钟艺 ¹, Jianfeng Li 李建锋 ¹, Hui Yan 颜辉 ¹ ² ³, and Shiliang Zhu 朱诗亮 ¹ ²
¹ Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
中国 广州 华南师范大学物理与电信工程学院 广东省量子调控工程与材料重点实验室
² Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
中国 广州 华南师范大学 物理前沿科学研究院 粤港量子物质联合实验室
³ Guangdong Provincial Engineering Technology Research Center for Quantum Precision Measurement, South China Normal University, Guangzhou 510006, China
中国 广州 华南师范大学 广东省量子精密测量工程技术研究中心
Time synchronization and phase shaping of single photons both play fundamental roles in quantum information applications that rely on multi-photon quantum interference. Phase shaping typically requires separate modulators with extra insertion losses. Here, we develop an all-optical built-in phase modulator for single photons using a quantum memory.
The fast phase modulation of a single photon in both step and linear manner are verified by observing the efficient quantum-memory-assisted Hong–Ou–Mandel interference between two single photons, where the anti-coalescence effect of bosonic photon pairs is demonstrated. The developed phase modulator may push forward the practical quantum information applications.
