Teleporting superpositions of even and odd coherent states of a cavity field via the entangled state of a degenerate Λ-type atom interacting with the cavity field

被引：11

作者：

Dai, HY ^{[1
]}

Chen, PX ^{[1
]}

Liang, LM ^{[1
]}

Li, CZ ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Sci, Changsha 410073, Peoples R China

来源：

ACTA PHYSICA SINICA | 2004年 / 53卷 / 02期

关键词：

a degenerate Lambda-type three-level atom; wave function; far-off resonant interaction; probabilistic quantum teleportation; superposition of even and odd coherent states;

D O I：

10.7498/aps.53.441

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on the modified effective Hamiltonian for the system which is made up of a degenerate A-type three-level atom and a single-mode coherent state cavity field, the wave function of the system for the arbitrary initial states is derived by means of matrix forms. Through changing the interaction time,the entangled state of an atom-field is prepared. A feasible scheme is proposed to probabilistically teleport superpositions of even and odd coherent states of the cavity field by using the entangled state of a degenerate A-type three-level atom interacting with a coherent state cavity field of large amplitude under a far-off resonant condition. By performing Bell state measurement, the superpositions of even and odd coherent states of the cavity field can be successfully achieved with a total probability of 0.25.

引用

页码：441 / 444

页数：4

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