Irreversible decay of nonlocal entanglement via a reservoir of a single degree of freedom
Irreversible decay of nonlocal entanglement via a reservoir of a single degree of freedom
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DOI：
10.1103/physreva.75.062120
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发表时间：
2007-03
影响因子：
2.9
通讯作者：
A. Vaglica;G. Vetri
中科院分区：
文献类型：
--
作者：
A. Vaglica;G. Vetri
最近，人们认识到非局域退纠缠可能需要有限的时间，这与局域相干性的渐近衰减相反。本文发现在两原子Stern-Gerlach光学模型中，纠缠发生了不可逆的突然死亡。特别地，这里考虑的一度非耗散环境突然破坏了任何Bell态垂直棒{phi}{sup {+-}}>叠加的初始纠缠。
Recently, it has been realized that nonlocal disentanglement may take a finite time as opposite to the asymptotic decay of local coherences. We find in this paper that a sudden irreversible death of entanglement takes place in a two atom optical Stern-Gerlach model. In particular, the one degree nondissipative environment here considered suddenly destroys the initial entanglement of any Bell's states vertical bar {phi}{sup {+-}}> superposition.