Entropy Squeezing in the Quantum Heisenberg XY Spin Chains  

Entropy Squeezing in the Quantum Heisenberg XY Spin Chains

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作  者:常平 邵彬 邹健 

机构地区:[1]School of Science ,Beijing Institute of Technology

出  处:《Journal of Beijing Institute of Technology》2009年第1期94-97,共4页北京理工大学学报(英文版)

基  金:Sponsored by the National Natural Science Foundation of China(10374007)

摘  要:The time evolution of entropy squeezing for the two-qubit XYZ Heisenberg model in an external uniform magnetic field is investigated in the language of quantum information. The effect of different parameters such as magnetic field and anisotropy parameter on the properties of entropy squeezing and variance squeezing are discussed. It is shown that magnetic field and anisotropy parameter can enhance the entropy squeezing.The time evolution of entropy squeezing for the two-qubit XYZ Heisenberg model in an external uniform magnetic field is investigated in the language of quantum information. The effect of different parameters such as magnetic field and anisotropy parameter on the properties of entropy squeezing and variance squeezing are discussed. It is shown that magnetic field and anisotropy parameter can enhance the entropy squeezing.

关 键 词:entropy squeezing Heisenberg chain variance squeezing 

分 类 号:O413[理学—理论物理]

 

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