Bidirectional Quantum States Sharing

Timothy C. Ralph, Thomas Symul, Ping Koy Lam +3 more

Ching‐Ying Lin, Tzonelih Hwang

In 2009, Shi et al. [Opt. Commun. 282 (2009) 2460-2463] proposed a bidirectional quantum secure communication protocol based on a shared private Bell state. The protocol allows two legitimate users to exchange their secret messages simultaneously and is free from information leakage. This work tries to use random permutation on photons to reduce the communication cost and enhance the quantum bit efficiency on Shi et al.'s protocol.

Willi-Hans Steeb, Yorick Hardy

Mrittunjoy Guha Majumdar

Multipartite entanglement is a resource for application in disparate protocols, of computing, communication and cryptography. In this paper, generation, characterisation and application of a genuine genuinely entangled seven-qubit resource state is studied. Theoretical schemes for quantum teleportation of arbitrary one, two and three qubits states, bidirectional teleportation of arbitrary two qubit states and probabilistic circular controlled teleportation as well as three schemes for undertaking tripartite quantum state sharing are presented.

Guo-Fang Shi, Xiao-Qiang Xi, Xiu-Lao Tian +1 more

Tomáš Tyc, Barry C. Sanders, Thomas Symul +3 more