Synchronization and Phase Shaping of Single Photons with High-Efficiency Quantum Memory

• 作者: Keyu Su Yunfei Wang Shanchao Zhang Zhuoping Kong Yi Zhong Jianfeng Li Hui Yan Shi-Liang Zhu
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2021,（9）
• 所属期刊栏目: FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS)
• 页码范围: 61-66
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/0256-307X/38/9/094202

摘要

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 modula-tors 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.