In today Internet era, confidential information transmitted over an insecure channel. With the
significant development in the area of quantum computing, there is a need for unconditional …

In this review article, we review the recent development of quantum secure direct
communication (QSDC) and deterministic secure quantum communication (DSQC) which …

We analyzed the security of the secure direct communication protocol based on the secret
transmitting order of particles recently proposed by Zhu, Xia, Fan, and Zhang [Phys. Rev. A …

This introductory textbook is written primarily for undergraduate students of physics,
mathematics, computer science and other related disciplines. It is also expected to be …

Quantum secure direct communication is the direct communication of secret messages
without need for establishing a shared secret key first. In the existing schemes, quantum …

A two-step quantum secure direct dialogue protocol using Einstein-Podolsky-Rosen (EPR)
pair block is proposed. In the protocol, the dialogue messages are encoded on series of …

This paper presents a scheme for quantum secure direct communication with quantum
encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs …

We present a quantum hyperdense coding protocol with hyperentanglement in polarization
and spatial-mode degrees of freedom of photons first and then give the details for a quantum …

We propose a two-step quantum secure direct communication (QSDC) protocol with
hyperentanglement in both the spatial-mode and the polarization degrees of freedom of …

In this paper, we present a QKA protocol with the block transmission of EPR pairs. There are
several advantages in this protocol. First, this protocol can guarantee both the fairness and …