Effective spin systems in coupled microcavities
Effective spin systems in coupled microcavities
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DOI：
10.1103/physrevlett.99.160501
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发表时间：
2007-10-19
影响因子：
8.6
通讯作者：
Plenio, Martin B.
中科院分区：
文献类型：
--
作者：
Hartmann, Michael J.;Brandao, Fernando G. S. L.;Plenio, Martin B.
我们证明，通过虚拟光子交换相互作用的微腔中的原子可以模拟外部磁场中各向异性海森堡自旋 1/2 晶格。有效哈密顿量的所有参数都可以通过外部激光器单独调整。由于激发原子能级和光子态的占据被强烈抑制，该有效模型对退相干机制具有鲁棒性，具有较长的寿命，并且其实现在当前的实验技术下是可行的。该模型提供了一种在这些设备中创建集群状态的可行方法。
We show that atoms trapped in microcavities that interact via the exchange of virtual photons can model an anisotropic Heisenberg spin-1/2 lattice in an external magnetic field. All parameters of the effective Hamiltonian can individually be tuned via external lasers. Since the occupations of excited atomic levels and photonic states are strongly suppressed, the effective model is robust against decoherence mechanisms, has a long lifetime, and its implementation is feasible with current experimental technology. The model provides a feasible way to create cluster states in these devices.