18
Jun
2026
14:30

Ohad Kimelfeld: "Covert Entanglement Generation and Secrecy"

18 Jun 2026
14:30
to
15:30
Seminar
|
Solid State Auditorium

Quantum communication harnesses the principles of quantum mechanics to enable fundamentally new forms of information transfer, with applications ranging from secure data transmission to distributed quantum computing. A central feature of quantum communication is the use of entanglement, whose generation and distribution are essential for enabling these capabilities. Privacy is a fundamental aspect of communication: while secrecy guarantees that the transmitted information remains inaccessible to an adversary, covert communication ensures that the very act of transmission remains undetectable. These are distinct requirements – covert communication does not necessarily imply secrecy, and vice versa. The covertness requirement significantly limits throughput: in the covert setting, the amount of information that can be transmitted reliably follows a square-root law, allowing only O( √ n) (qu)bits over n transmissions. In this work, we characterize the covert capacity for entanglement generation over a noisy quantum channel. We begin by analyzing the problem of covert communication of classical information under a secrecy constraint. We then leverage this result to construct a coding scheme for covert entanglement generation. Specifically, we establish that O( √ n) Einstein-Podolsky-Rosen (EPR) pairs can be distributed covertly and reliably over n transmissions. We determine the optimal transmission rates for both covert secrecy and covert entanglement generation