Method for transmission of information about polarization state of photons to stationary system used in e.g. quantum cryptography field, involves assigning states based on polarizations, and arranging quantum system in superposition state

摘要

The method involves exciting a quantum system with photons in a polarization state. Two states of the quantum system are excited with linear horizontal and vertical polarizations that are orthogonal to each other, where the states exhibit an energetic gap smaller than energetic bandwidth of photons. The states are assigned based on the polarizations, where the quantum system is arranged in a superposition state. The quantum system is formed by a quantum bit that is formed as a two-level system.