[CFA7I] Quantum Frequency Conversion

[CFA7I-02] Ultrafast Measuement of Femtosecond Time-bin Qubits Using Optimized Up-conversion Single Photon Detector

*Yuta Kochi¹, Sunao Kurimura², Junko Ishi-Hayase¹ (1. Keio Univ. (Japan), 2. NIMS (Japan))

[Presentation Style] Online

We developed and optimized the up-conversion single photon detector with the temporal resolution of 415 fs. Consequently, we successfully evaluated single-photon level pseudo time-bin qubits with their pulse interval of only 800 fs.