Abstract
In this review article, we will review the recent process of quantum communications. In the past decades, there are many developments in quantum communication, for instance, quantum key distribution, quantum teleportation, quantum secure direct communication, deterministic secure quantum communication, quantum secret sharing and so on. And we focus our attention on the recent developments in quantum communication protocols.
Highlights
We focus our attention on the recent developments in quantum communication protocols
In Quantum secure direct communication (QSDC), secret information is transmitted directly from the sender to the receiver which is different from the quantum key distribution (QKD) schemes with an advanced encryption process
Measurement on part of an entangled quantum system does not provide the whole information of the quantum system, this provides us with a novel way for constructing quantum communication protocols
Summary
QKD provides an unconditional secure way of information exchange between two distant users. Quantum teleportation transmits an unknown state to a remote place without transporting the actual particle. It has become a basic ingredient in quantum information architectures [9, 10]. Teleportation includes two legal users and two communication channels, which are the sender and the receiver, and the quantum channel and the classical channel. The first quantum teleportation protocol is proposed by Bennett, Brassard, Crepeau, Jozsa, Peres, and Wootters [12]. A quantum secret sharing (QSS) protocol is to distribute secret keys among two or more legal users. In QSDC, secret information is transmitted directly from the sender to the receiver which is different from the QKD schemes with an advanced encryption process. We will discuss some key problems of quantum communication
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