[18a-S4_203-1~7] 3.9 Optical quantum physics and technologies

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)

[18a-S4_203-1] Quantum entanglement detection using single-photon avalanche diodes without temperature control

〇Shoichi Murakami¹, Takuya Ikuta¹, Yuki Yamada², Toshimori Honjo¹, Fumito Nakajima², Hiroki Takesue¹ (1.NTT BRL, 2.NTT Device Technology Labs.)

Keywords:

Single-photon avalanche diode (SPAD),Quantum communication,Quantum entanglement

Single-photon detectors play a central role in quantum communication. Compared with superconducting single-photon detectors, single-photon avalanche diodes (SPADs) can operate at relatively higher temperatures and do not require a cryostat, making them promising as compact and low-cost single-photon detectors. In this presentation, we report the observation of entangled photon pairs without temperature control using our newly developed SPAD.