|| Fundamental Limits of Bosonic Broadcast Channels
||Evan Anderson, Saikat Guha, Boulat Bash, University of Arizona, United States|
||D2-S4-T4: Quantum Interference & Broadcast Channels
||Tuesday, 13 July, 23:00 - 23:20
||Tuesday, 13 July, 23:20 - 23:40
We develop the capacity region for the bosonic broadcast channel in the presence of thermal noise and photon loss due to the environment. The bosonic channel is a quantum-mechanical description of many practical communication links such as optical, microwave, and radiofrequency. We employ our results to find the capacity region for quantum-secure covert broadcast over such channels and show that time-division is optimal as in the classical covert broadcast scenario. We rely on a strong minimum entropy output conjecture, a direct result of the entropy photon-number inequality (EPnI) conjecture.