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Covert Single-hop Communication in a Wireless Network with Distributed Artificial Noise Generation
Ramin Soltani, Boulat Bash, Dennis Goeckel +2
Covert communication, also known as low probability of detection (LPD) communication, prevents the adversary from knowing that a communication is taking place. Recent work has demo…
Covert Communication in the Presence of an Uninformed Jammer
Tamara V. Sobers, Boulat A. Bash, Saikat Guha +2
Recent work has established that when transmitter Alice wishes to communicate reliably to recipient Bob without detection by warden Willie, with additive white Gaussian noise (AWGN…
Quantum Key Distribution Using Multiple Gaussian Focused Beams
Boulat A. Bash, Nivedita Chandrasekaran, Jeffrey H. Shapiro +1
The secret key rate attained by a free-space QKD system in the {\em near-field} propagation regime (relevant for - km range using cm radii transmit and receive a…
Fundamental Limits of Covert Communication over Classical-Quantum Channels
Michael S. Bullock, Azadeh Sheikholeslami, Mehrdad Tahmasbi +3
We investigate covert communication over general memoryless classical-quantum channels with fixed finite-size input alphabets. We show that the square root law (SRL) governs covert…