The science of quantum information has arisen over the last two decades centered on the
manipulation of individual quanta of information, known as quantum bits or qubits. Quantum …

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 …

We propose the schemes of quantum secure direct communication based on a secret
transmitting order of particles. In these protocols, the secret transmitting order of particles …

Qing-yu Cai Wuhan Institute of Physics and Mathematics, The Chinese Academy of
Sciences, Wuhan, 430071, People's Republic of China Bostr.. om and Felbinger [1] have …

Deterministic Secure Communication Without Using Entanglement Page 1 Chinese Physics
Letters Deterministic Secure Communication Without Using Entanglement To cite this article …

We propose a theoretical scheme for secure quantum key distribution network following the
ideas in quantum dense coding. In this scheme, the server of the network provides the …

We present an improvement of the protocol proposed by Lucamarini and Mancini [M.
Lucamarini, S. Mancini, Phys. Rev. Lett. 94 (2005) 140501] with techniques used in the …

A new theoretical scheme for quantum secure direct communication is proposed, where four-
qubit symmetric W state functions as quantum channel. It is shown that two legitimate users …

Based on the idea of dense coding of three-photon entangled state and qubit transmission
in blocks, we present a multiparty controlled quantum secret direct communication scheme …

We present a controlled quantum secure direct communication protocol that uses a 2-
dimensional Greenberger–Horne–Zeilinger (GHZ) entangled state and a 3-dimensional Bell …