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Record-sensitivity Gb/s receiver for free-space applications based on phase-sensitive amplification

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We report error-free, 1 photon-per-bit receiver sensitivity using 10.52 Gb/s QPSK data and a half-rate FEC, enabled by a low-noise phase-sensitive pre-amplifier as well as injectionlocking-based pump recovery at sub nano-watt powers.

© 2019 The Author(s)

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