One-step quantum secure direct communication

Lan Zhou, Yu‐Bo Sheng

Shan‐Shan Chen, Lan Zhou, Wei Zhong +1 more

Jia‐Wei Ying, Lan Zhou, Wei Zhong +1 more

The one-step quantum secure direct communication (QSDC) (Sci. Bull. 67, 367 (2022)) can effectively simplify QSDC’s operation and reduce message loss. For enhancing its security under practical experimental condition, we propose two measurement-device-independent (MDI) one-step QSDC protocols, which can resist all possible attacks from imperfect measurement devices. In both protocols, the communication parties prepare identical polarization-spatial-mode two-photon hyperentangled states and construct the hyperentanglement channel by hyperentanglement swapping. The first MDI one-step QSDC protocol adopts the nonlinear-optical complete hyperentanglement Bell state measurement (HBSM) to construct the hyperentanglement channel, while the second protocol adopts the linear-optical partial HBSM. Then, the parties encode the photons in the polarization degree of freedom and send them to the third party for the hyperentanglement-assisted complete polarization Bell state measurement. Both protocols are unconditionally secure in theory. The simulation results show the MDI one-step QSDC protocol with complete HBSM attains the maximal communication distance of about 354 km. Our MDI one-step QSDC protocols may have potential applications in the future quantum secure communication field.

Jinxin Gong

Quantum security direct communication is based on quantum physics, combined with the classic communication theory.It becomes a new communication model, its transmission of information on the high efficiency, security has been more and more extensive attention.That is, since the beginning of this century, has been rapid developed.In this paper, we will describe several common quantum secure direct communication protocols and economic quantum secure direct communication network models theoretically.At the end of this paper, we will discuss and analyze the development and the future of quantum safety direct communication. Quantum Direct Communication Protocol Two-Step QSDC Protocol. The two-Step QSDC protocol uses the protocol of the entangled particle pair and the single-photon sequence. The following is a schematic diagram of the Two-Step

Jinxin Gong

Quantum security direct communication is based on quantum physics, combined with the classic communication theory .It become a new communication model, its transmission of information on the high efficiency, security has been more and more extensive attention.That is, since the beginning of this century, has been rapid developed.In this paper, we will describe several common quantum secure direct communication protocols and economic quantum secure direct communication network models theoretically.At the end of this paper, we will discuss and analyze the development and the future of quantum safety direct communication. Quantum Direct Communication Protocol Two-Step QSDC Protocol.The two-Step QSDC protocol uses the protocol of the entangled particle pair and the single-photon sequence.The following is a schematic diagram of the Two-Step QSDC protocol (Fig. 1).We set the sender for Alice, the receiver for the Bob, the specific process is

Gui‐Lu Long