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A novel mid-infrared single-photon detector

Abstract

Abstract: The mid-infrared is emerging an interesting field of research in photonics for several applications, such as gas analysis and medical diagnostics. Modern quantum cascade lasers have evolved as ideal coherent mid-infrared excitation sources, but simple, low-noise, room-temperature detectors and imaging systems lag behind. In this talk I will present a novel upconversion system for sensitive single-photon imaging. Thanks to this new tool, it is possible to extend experiments of quantum optics from the third telecom window, utilizes wavelengths around 1.5 μm, to the mid-infrared part of the spectrum, till about ~5 μm.