Development Prospects and Enginering of Quantum Communication Systems in the Atmosphere

Abstract

Scheme of quantum key distribution with polarization coding based on parametric scattering in the crystal PPKTP was desined. The possibility of application of this scheme, together with atmospheric satellites was researched. The possibility of changes to the coding scheme using the orbital angular momentum of the photon was analyzed.

Keywords

• quantum cryptography
• quantum key distribution
• BB84
• spontaneous parametric down conversion