中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2584-2586.doi: 10.1088/1009-1963/16/9/014
张为俊1, 闫伟2
Yan Wei(闫伟)a)b)† and Zhang Wei-Jun(张为俊)b)
摘要: This paper presents a realistic scheme for the teleportation of coherent states in which a two-mode squeezed vacuum state serves as the quantum channel and the position-sum and momentum-difference of two local modes serve as the measuring observables. The average fidelity of the teleportation of coherent states is derived for finite squeezing parameters and it turns out that fidelity greater than 1/2 cannot be achieved by using a classical channel alone and the probability distribution of the measurement result is a Gaussian distribution around the unknown parameter of the input coherent state with a width given by the squeezing parameter.
中图分类号: (Quantum communication)