Quantum Secure Communication Based on Interferometric Teleportation

Abstract

The paper introduces the concept of interferometric quantum teleportation. Based on this concept, a quantum secure communication (QSC) protocol, operating in a single-photon regime is proposed. The proposed protocol is characterized with higher efficiency and data rate than its original counterpart, namely, the teleportation-based quantum secure communication (T-QSC). The proposal is verified to be secure. Its security relies on both quantum (polarization of qubits) and relativistic (speed of light) restrictions. The relativistic restriction is possible due to the use of an interferometric quantum channel, like the relativistic quantum key distribution.