Observing different phases for the dynamics of entanglement in an ion trap

Observing different phases for the dynamics of entanglement in an ion trap
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观察离子阱中纠缠动力学的不同阶段

DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
J. Paz
J. Paz
中科院分区:
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文献类型:
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作者:
C. Cormick;J. Paz

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耦合到一个共同的热环境中的两个振子之间的纠缠演化是不平凡的。长时间限制具有三种不同性质的行为(阶段),这取决于诸如浴的温度的参数[J.P.Paz和A. J. Roncaglia,Phys. Rev. 100,220401(2008)]。这些阶段包括非零长期纠缠的情况,其他最终解纠缠状态的情况,以及显示纠缠消失和复活事件的无限序列的情况。我们描述了一个实验,以实现这些不同的情况下,在离子阱。两个离子的运动自由度被用来模拟系统,而耦合到一个额外的(中央)离子,这是连续的激光冷却,是一个去肩水库的网关。该方案允许观察和控制的运动纠缠动力学,是一类在非马尔可夫制度的量子开放系统的模拟的例子。
The evolution of the entanglement between two oscillators coupled to a common thermal environment is nontrivial. The long time limit has three qualitatively different behaviors (phases) depending on parameters such as the temperature of the bath [J. P. Paz and A. J. Roncaglia, Phys. Rev. Lett. 100, 220401 (2008)]. The phases include cases with nonvanishing long-term entanglement, others with a final disentangled state, and situations displaying an infinite sequence of events of disappearance and revival of entanglement. We describe an experiment to realize these different scenarios in an ion trap. The motional degrees of freedom of two ions are used to simulate the system while the coupling to an extra (central) ion, which is continuously laser cooled, is the gateway to a decohering reservoir. The scheme proposed allows for the observation and control of motional entanglement dynamics and is an example of a class of simulations of quantum open systems in the non-Markovian regime.
DOI: 10.1103/physrevlett.101.070403
发表时间: 2008-08-15
影响因子: 8.6
作者:
Huber, Gerhard;Schmidt-Kaler, Ferdinand;Lutz, Eric
通讯作者: Lutz, Eric