We briefly summarized the experimental generation scheme of the optical entangle states for continuous variables and their applications in quantum teleportation,quantum dense coding,controlled dense coding,entanglement swapping and quantum communication network.

A controlled quantum dense coding scheme is proposed with a three-particle non-maximally entangled Greenberger-Horne-Zeilinger(GHZ) state.

Quantum teleportation、remote state preparation、quantum dense coding are important research task of quantum information science.

Controlled quantum dense coding via a non-maximal entangled state;

A dense coding scheme which employs non-symmetric two-particle entangled state as quantum channel is advanced.

Drawing idea from the quantum secure direct communication(QSDC) and the dense coding,we propose a novel quantum secret sharing(QSS) scheme with high efficiency based on the GHZ states.

According to the theory that quantum entanglement can be used in quantum dense coding and increase the classical information capacity of a quantum channel, we discuss and compare the upper bound of capacity for dense coding in two case of using entangled input states and using product input states though a noiseless channel, when using a pure entanglement resource and get the result,i.

By adopting the quantum bit as a representation,SCQA uses the Logistic Sequence to control the mutation size and Chaos Mutation Operator to control the clonal selection.

In the algorithm, individuals in a population are represented by quantum bits (qubits).