SECURE QUANTUM COMMUNICATION IN HARSH WEATHER
Abstract
The purpose of our research is to explore the possibility of secure quantum communication in all weather conditions using macroscopic quantum states of light. The first objective is to make quantum detection theory specialized for cryptographic applications to give design of a crypto-purpose quantum receiver. In parallel to this, we also aim to extend quantum detection theory to more general form, which is not limited for cryptographic applications. The second objective is to build a channel modeling theory for describing the free-space optical channel in harsh weather, in which a novel method for estimation of channel characteristics is considered by combining turbulence theory, quantum optics, and random process theory. The third objective is to conduct proof-of-concept experiments for channel modeling. In this experiment, a 100-meter scale lab experiment environment that reproduces various types of weather conditions will be built by using turn-back path. The fourth objective is to conduct proof-of-concept experiments for a crypto-purpose quantum receiver in harsh weather. We will employ a loss-less decryption technique proposed in the preceding research. If all-weather type secure free-space communication is realized by Y00 and its variants with quantum receivers, this may be one of good alter-natives to the quantum internet that connects the world by quantum repeaters.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 20, 2023
- Source ID
- FA23862214030
Entities
People
- Kentaro Kato
Organizations
- Air Force Office of Scientific Research
- Tamagawa University
- United States Air Force