We present a scheme for probabilistically teleporting an unknown three-level bipartite entangled state by using a partial entangled three-level bipartite state as quantum channel This scheme can be directly generalize...We present a scheme for probabilistically teleporting an unknown three-level bipartite entangled state by using a partial entangled three-level bipartite state as quantum channel This scheme can be directly generalized to probabilistically teleport an unknown three-level k-particle entangled state by a partial three-level bipartite entangled state. A11 kinds of unitary transformations are given in detail We calculate the successful total probability and the total classical communication cost required for this scheme.展开更多
We show a scheme of preparing multipartite W type of maximally entangled states among many atomic ensembles with the generation time increasing with the party number only polynomially. The scheme is based on laser man...We show a scheme of preparing multipartite W type of maximally entangled states among many atomic ensembles with the generation time increasing with the party number only polynomially. The scheme is based on laser manipulation of atomic ensembles and single-photon detection, and fits well the status of the current experimental technology. We also show one of the applications of this kind of W state, demonstrating Bell theorem without inequalities.展开更多
We present a convenient approach to finding multi-partite entangled state with continuum variables, which is the common eigenvectors of center-of-mass coordinate and mass-weighted relative momenta, by decomposing the ...We present a convenient approach to finding multi-partite entangled state with continuum variables, which is the common eigenvectors of center-of-mass coordinate and mass-weighted relative momenta, by decomposing the normally ordered Gaussian-form operator expressing the completeness relation which is constructed by analyzing the eigenvector equations. The whole derivation is based on the technique of integration within an ordered product of operators.展开更多
For graphs F and G,let F→(G,G)denote that any red/blue edge coloring of F contains a monochromatic G.Define Folkman number f(G;t)to be the smallest order of a graph F such that F→(G,G)andω(F)≤t.It is shown that f(...For graphs F and G,let F→(G,G)denote that any red/blue edge coloring of F contains a monochromatic G.Define Folkman number f(G;t)to be the smallest order of a graph F such that F→(G,G)andω(F)≤t.It is shown that f(G;t)≤cn for p-arrangeable graphs with n vertices,where p≥1,c=c(p)and t=t(p)are positive constants.展开更多
基金The project supported by National Natural Science Foundation of China under Grant No.60674040China Postdoctoral Science Foundation
文摘We present a scheme for probabilistically teleporting an unknown three-level bipartite entangled state by using a partial entangled three-level bipartite state as quantum channel This scheme can be directly generalized to probabilistically teleport an unknown three-level k-particle entangled state by a partial three-level bipartite entangled state. A11 kinds of unitary transformations are given in detail We calculate the successful total probability and the total classical communication cost required for this scheme.
基金supported by the National Natural Science Foundation of China(Grant Nos.11174052 and 11474049)the China Advanced Science and Technology Innovation Fund
文摘We show a scheme of preparing multipartite W type of maximally entangled states among many atomic ensembles with the generation time increasing with the party number only polynomially. The scheme is based on laser manipulation of atomic ensembles and single-photon detection, and fits well the status of the current experimental technology. We also show one of the applications of this kind of W state, demonstrating Bell theorem without inequalities.
基金Supported by the National Natural Science Foundation of China under Grant No. 10874174the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No. 20070358009
文摘We present a convenient approach to finding multi-partite entangled state with continuum variables, which is the common eigenvectors of center-of-mass coordinate and mass-weighted relative momenta, by decomposing the normally ordered Gaussian-form operator expressing the completeness relation which is constructed by analyzing the eigenvector equations. The whole derivation is based on the technique of integration within an ordered product of operators.
基金supported by NSFC(No.11671088)“New century excellent talents support plan for institutions of higher learning in Fujian province”(SJ2017-29).
文摘For graphs F and G,let F→(G,G)denote that any red/blue edge coloring of F contains a monochromatic G.Define Folkman number f(G;t)to be the smallest order of a graph F such that F→(G,G)andω(F)≤t.It is shown that f(G;t)≤cn for p-arrangeable graphs with n vertices,where p≥1,c=c(p)and t=t(p)are positive constants.
