SNSPDs - Superconducting Nanowire Single Photon Detectors

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SNSPDs  play a significant role as an enabling technology in the QIS arena. SNSPDs have excellent potential for time correlated single-photon counting (TCSPC) in the infrared wavelength regime, where important new applications are emerging: 1) Quantum key distribution (QKD). Quantum key distribution (or quantum cryptography) is a method to create a cryptographic key via a public communication channel. This is achieved in practice by encoding information on the phase or polarization of single photons. 2) Optical quantum computing. The realization of a quantum computer is undoubtedly one of the great challenges for physics in the 21st century and is the focus of considerable efforts in the QIS community. 3) Characterization of quantum emitters. Single-photon emission from atoms, quantum dots and molecules can be harnessed as a tool for production of quantum states of light for QIS and as a powerful monitoring technique in the life sciences.......back