The generalized continuous variable two-mode entangled state |?> is proposed by using the technique of integration within an ordered product (IWOP) of operators. The characteristics of this new entangled representa...The generalized continuous variable two-mode entangled state |?> is proposed by using the technique of integration within an ordered product (IWOP) of operators. The characteristics of this new entangled representation and its application in quantum teleportation are analyzed in detail. These results indicate that such real parameters |?> indeed make up a new entangled representation owing to its completeness and orthogonal relation. By employing the |?> as quantum transmission channel, the teleportation of any single-mode quantum state 3 |ψ>3 can be realized by a unitary transformation.展开更多
The coherent-entangled state |α, x; λ> with real parameters λ is proposed in the two-mode Fock space, which exhibits the properties of both the coherent and entangled states. The completeness relation of |α, x;...The coherent-entangled state |α, x; λ> with real parameters λ is proposed in the two-mode Fock space, which exhibits the properties of both the coherent and entangled states. The completeness relation of |α, x; λ> is proved by virtue of the technique of integral within an ordered product of operators. The corresponding squeezing operator is derived, with its own squeezing properties. Furthermore, generalized P-representation in the coherent-entangled state is constructed. Finally, it is revealed that superposition of the coherent-entangled states may produce the EPR entangled state.展开更多
文摘The generalized continuous variable two-mode entangled state |?> is proposed by using the technique of integration within an ordered product (IWOP) of operators. The characteristics of this new entangled representation and its application in quantum teleportation are analyzed in detail. These results indicate that such real parameters |?> indeed make up a new entangled representation owing to its completeness and orthogonal relation. By employing the |?> as quantum transmission channel, the teleportation of any single-mode quantum state 3 |ψ>3 can be realized by a unitary transformation.
基金Supported by the National Natural Science Foundation of China (Grant No 10574060)the Natural Science Foundation of Shandong Province of China (Grant No Y2008A16)+1 种基金the University Experimental Technology Foundation of Shandong Province of China (Grant No S04W138)the Natural Science Foundation of Heze University of Shandong Province of China (Grant Nos XY07WL01 and XY08WL03)
文摘The coherent-entangled state |α, x; λ> with real parameters λ is proposed in the two-mode Fock space, which exhibits the properties of both the coherent and entangled states. The completeness relation of |α, x; λ> is proved by virtue of the technique of integral within an ordered product of operators. The corresponding squeezing operator is derived, with its own squeezing properties. Furthermore, generalized P-representation in the coherent-entangled state is constructed. Finally, it is revealed that superposition of the coherent-entangled states may produce the EPR entangled state.
