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quant-ph2026
Elucidating mechanism of optical cavities in superconducting strip single photon detectors using transmission line and impedance models
Hiroki Kutsuma, Taro Yamashita
We clarified the physical mechanism of superconducting strip single photon detectors (SSPDs) with optical cavities by using transmission line and impedance models. By introducing t…
quant-ph2025
Broadband Kinetic-Inductance Parametric Amplifiers with Impedance Engineering
Chih-Chiao Hung, Hiroki Kutsuma, Chung Wai Sandbo Chang +2
Broadband quantum-limited parametric amplifiers (PAs) are essential components in quantum information science and technology. Impedance-engineered resonator-based PAs and traveling…