[Th-P] Semiconductor hybrid systems and novel devices

[Th-P-110] "Development of a photon number resolving detector based on Quantum Point Contact"

〇Yong-Gwon Kim¹, Jikhyeon Ham¹, Gyuseock Ko¹, Sehoon Kim¹, Mubin Park¹, Shineui Kim¹, Seok-Kyun Son^1,2,3 (1. KyungHee University (Korea), 2. International Center for Quantum Matter, Kyung Hee University (Korea), 3. Insititute for Functional Intelligent Materials, National University of Singapore (Singapore))

Photon-number-resolving (PNR) detectors are essential for quantum photonics but typically require ultralow temperatures. We propose a TMDC-based PNR detector operating at ~4 K using a gate-defined quantum point contact. Photon absorption induces discrete charge events, producing quantized conductance steps for photon counting.