Środowiskowe Seminarium z Informacji i Technologii Kwantowych

Hiding transmitted signals is of paramount importance in many communication settings. While traditional security (e.g., encryption) prevents unauthorized access to message content, detection of the mere presence of a message by the adversary can have significant negative impact. This necessitates the use of covert communication, which not only protects the information contained in a transmission from unauthorized decoding, but also prevents the detection of a transmission in the first place. In this talk, I will present the fundamental classical and quantum limits of covert communication, and overview future research directions.