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Entanglement Generated by Dissipation and Steady State Entanglement of Two Macroscopic Objects

zqyin 添加于 2011-11-7 19:45 | 1652 次阅读 | 0 个评论

作者
Krauter H, Muschik C, Jensen K, Wasilewski W, Petersen J, Cirac J, Polzik E
摘要
Entanglement is a striking feature of quantum mechanics and an essential ingredient in most applications in quantum information. Typically, coupling of a system to an environment inhibits entanglement, particularly in macroscopic systems. Here we report on an experiment where dissipation continuously generates entanglement between two macroscopic objects. This is achieved by engineering the dissipation using laser and magnetic fields, and leads to robust event-ready entanglement maintained for 0.04 s at room temperature. Our system consists of two ensembles containing about 10¹² atoms and separated by 0.5 m coupled to the environment composed of the vacuum modes of the electromagnetic field. By combining the dissipative mechanism with a continuous measurement, steady state entanglement is continuously generated and observed for up to 1 h.
详细资料
- 文献种类:期刊
- 期刊名称: Physical Review Letters
- 期刊缩写: Phys. Rev. Lett.
- 期卷页: 2011年第107卷第8期
- ISBN: 0031-9007
标签

CV entanglement cold atom
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