Abstract

We present the Quantum Pulse Position Modulation (QPPM) protocol, which is an entanglement-based communications format approach designed to enhance the security of pulse position modulation (PPM) in optical communications. QPPM interleaves states from two-mode entangled light with thermal noise states resulting in a data transmission method that is stealthy and secure. We have calculated various quantum-information theoretic bounds, namely the Helstrom bound and the quantum Chernoff bound, for correctly decoding the transmitted symbols at the receiver. These bounds were computed numerically using a two-mode squeezed vacuum state to carry data, interleaved with a thermal state. A passive eavesdropper's inability to discriminate one half of a two-mode squeezed vacuum state from a thermal state renders them ineffective at identifying the presence of an active communication channel.

Date

January 1, 1970

Authors

Tahereh Rezaei, Amir Kalev, Jonathan Habif

Journal

APS March Meeting Abstracts

Volume

2024

Pages

N53. 003