Ultrafast Measurement of Femtosecond Time-bin Qubits Using Optimized Up-conversion Single Photon Detector
Yuta Kochi, Sunao Kurimura, Junko Ishi‐Hayase · 2022
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.