<正> The frequency in middle of magnon energy band in a five-layer ferromagnetic superlattice is studied byusing the linear spin-wave approach and Green's f
<正> The dynamic behavior of the entanglement for the pair cat states in the amplitude decoherence channel isstudied by adopting the entanglement of formation d
<正> We propose a scheme for sharing an arbitrary unknown two-qubit state among three parties by using afour-qubit cluster-class state and a Bell state as a qua