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 present two realistic entanglement concentration protocols (ECPs) for pure partially
entangled photons. A partially entangled photon pair can be concentrated to a maximally …

We present an efficient quantum repeater protocol that uses coupled systems of quantum-
dot spins and optical microcavities, in which the spatial entanglement of a photon system …

We present two two-step practical entanglement concentration protocols for concentrating
an arbitrary three-particle less-entangled W state into a maximally entangled W state …

We present a nonlocal entanglement concentration scheme for reconstructing some
maximally entangled multipartite states from partially entangled ones by exploiting cross …

A bidirectional quantum controlled teleportation scheme using a seven-qubit maximally
entangled state as quantum channel is proposed. This means that Alice can transmit an …

Through generating the d-dimensional GHZ state in the Z-basis and measuring it in the X-
basis, a dynamic quantum secret sharing scheme is proposed. In the proposed scheme …

We propose a scheme for a secure message communication network with authentication
following the idea in controlled teleportation. In this scheme, the servers of the network …

We construct a genuine (2 N+ 1)-qubit entangled state to perform controlled teleportation of
an arbitrary N-qubit state. The constructed state is a complementarity to the genuine 2 N …

An original idea is proposed for constructing optimal schemes of quantum-state sharing with
respect to resource consumption, operation complexity and efficiency. To elucidate it, a …