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Detecting single infrared photons with 93% system efficiency
Researchers develop a fiber-coupled single-photon-detection system using amorphous tungsten silicide superconducting nanowire single-photon detectors. The system detection efficiency is higher thanExpand
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Superconducting a-WxSi1−x nanowire single-photon detector with saturated internal quantum efficiency from visible to 1850 nm
We have developed a single-photon detector based on superconducting amorphous tungsten–silicon alloy (a-WxSi1−x) nanowire. Our device made from a uniform a-WxSi1−x nanowire covers a practicalExpand
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Co-Sputtered Amorphous Nb$_{ x}$ Si$_{1 - { x}}$ Barriers for Josephson-Junction Circuits
Co-sputtered amorphous NbxSi1-x has been developed as a barrier material for Josephson-junction array circuits. This material is quite promising as a normal-metal barrier for state-of-the-artExpand
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Enhanced telecom wavelength single-photon detection with NbTiN superconducting nanowires on oxidized silicon
Superconducting nanowire single-photon detectors (SNSPDs) have emerged as a highly promising infrared single-photon detector technology. Next-generation devices are being developed with enhancedExpand
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Large sensitive-area NbN nanowire superconducting single-photon detectors fabricated on single-crystal MgO substrates
We report on the performance of large area NbN nanowire superconducting single-photon detectors (SSPDs). 20×20μm2 area SSPDs with 80 and 100nm linewidths and 50% fill factor were fabricated inExpand
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Generation of degenerate, factorizable, pulsed squeezed light at telecom wavelengths.
We characterize a periodically poled KTP crystal that produces an entangled, two-mode, squeezed state with orthogonal polarizations, nearly identical, factorizable frequency modes, and few photons inExpand
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Hybrid superconducting-magnetic memory device using competing order parameters.
In a hybrid superconducting-magnetic device, two order parameters compete, with one type of order suppressing the other. Recent interest in ultra-low-power, high-density cryogenic memories hasExpand
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Distribution of time-energy entanglement over 100 km fiber using superconducting single-photon detectors.
In this letter, we report an experimental realization of distributing entangled photon pairs over 100 km of dispersion-shifted fiber. In the experiment, we used a periodically poled lithium niobateExpand
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Measuring intensity correlations with a two-element superconducting nanowire single-photon detector
Eric A. Dauler, Martin J. Stevens, Burm Baek, Richard J. Molnar, Scott A. Hamilton, Richard P. Mirin, Sae Woo Nam, and Karl K. Berggren Research Laboratory of Electronics, Massachusetts Institute ofExpand
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Analysis of a distributed fiber-optic temperature sensor using single-photon detectors.
We demonstrate a high-accuracy distributed fiber-optic temperature sensor using superconducting nanowire single-photon detectors and single-photon counting techniques. Our demonstration usesExpand
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