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We report the first experimental demonstration of an entanglement-based secure communication system that is resilient to entanglement-breaking loss and noise on the communication channel.
An optical diode consisting of cascaded silicon micro-resonators enables non-reciprocal transmission through direction dependent resonance shift. One-way 10Gbps data transmission is realized through the strong dispersion and attenuation associated with a resonant structure.
We present a novel optical interferometric strategy to generate arbitrary linear/nonlinear frequency-chirped electrical pulses with widely tunable center frequency. The Time-Bandwidth Product of these waveforms is twice that of current counterpart techniques.
Optical frequency transfer via a 1840 km fiber link has been investigated. Twenty fiber amplifiers and two fiber Brillouin amplifiers are needed to compensate for 420 dB of loss. Active noise compensation reduces the instability to 2.7 × 10−15 at 1 s with 4 × 10−19 after 100 s and an accuracy of a few parts in 1019.
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