| 两原子依次通过粒子场的纠缠突然死亡与突然产生 |
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| 引用本文： | 张宝来,高德营.两原子依次通过粒子场的纠缠突然死亡与突然产生[J].河北师范大学学报(自然科学版),2011,35(5). |
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| 作者姓名： | 张宝来 高德营 |
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| 作者单位： | 聊城大学东昌学院,山东聊城,252000 |
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| 基金项目： | 国家自然科学基金(10774088); 聊城大学东昌学院科研项目 |
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| 摘 要： | 通过数值计算的方法,研究了两纠缠二能级原子依次通过粒子场时的纠缠演化特性,发现原子的初态和光场的初态对两原子的纠缠有影响.当光场的粒子数为0时,纠缠处于周期性变化;当粒子数不为0时,纠缠非周期性变化,并出现纠缠突然死亡与突然产生现象.通过改变原子的初态和光场的初态,纠缠突然死亡和产生现象会随之改变.
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| 关 键 词： | 纠缠 粒子场 Negativity |
Sudden Death and Sudden Birth of Entanglement Between Two Atoms Successively Passing Fock State Field |
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| ZHANG Baolai,GAO Deying.Sudden Death and Sudden Birth of Entanglement Between Two Atoms Successively Passing Fock State Field[J].Journal of Hebei Normal University,2011,35(5). |
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| Authors: | ZHANG Baolai GAO Deying |
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| Institution: | ZHANG Baolai,GAO Deying(Dongchang College,Liaocheng University,Shandong Liaocheng 252000,China) |
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| Abstract: | The dynamics of entanglement of two initially separate atoms passing through a cavity one after another is studied by the negativity method.The effects of the two atom initial states and the field in the fock state on the time evolution of atom-atom entanglement are examined.The phenomenon of sudden birth and death of entanglement occurs when the photon number in the fock state is not zero and the phenomenon will change with the two atom initial states and the photon number. |
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| Keywords: | entanglement fock state field Negativity |
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