Sparse signaling over bosonic channels minimizes detectability with a two-consecutive-photon-number mixture (vacuum plus single photon at low brightness), revealing power thresholds that trade covertness against communication and sensing rates.
Experimental validation of provably covert communication using software-defined radio
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Covert Signaling for Communication and Sensing over the Bosonic Channels
Sparse signaling over bosonic channels minimizes detectability with a two-consecutive-photon-number mixture (vacuum plus single photon at low brightness), revealing power thresholds that trade covertness against communication and sensing rates.