The Feasible Hyper-encoding Measurement-device-independent Deterministic Secure Quantum Communication Protocol

Deterministic secure quantum communication (DSQC) can directly transmit ciphertext through the quantum channels. Measurement-device-independent (MDI) DSQC can resist all possible attacks on the imperfect measurement devices. Comparing with conventional DSQC protocols, MDI-DSQC has relatively low ciphertext transmission rate. In this paper, we propose a hyper-encoding MDI-DSQC protocol. The hyper-encoding can effectively increase single photon's capacity and thus increase the ciphertext transmission rate of MDI-DSQC. Our protocol adopts the high-efficient linear-optical partial hyperentangled Bell state analysis, which is feasible under current experimental condition. Our MDI-DSQC protocol is secure in theory. We provide the numerical simulation of its ciphertext transmission rate. Our hyper-encoding MDI-DSQC protocol may have potential application in the quantum communication field.