Simulating the Lipkin-Meshkov-Glick model in a hybrid quantum system
Simulating the Lipkin-Meshkov-Glick model in a hybrid quantum system
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在混合量子系统中模拟 Lipkin-Meshkov-Glick 模型
DOI：
10.1103/physreva.96.062333
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发表时间：
2017
影响因子：
2.9
通讯作者：
Peng-Bo Li
中科院分区：
文献类型：
--
作者：
Yuan Zhou;Sheng-Li Ma;Bo Li;Xiao-Xiao Li;Fu-Li Li;Peng-Bo Li
我们提出了一种有效的方案，用于模拟与超导共面波导腔磁耦合的金刚石中的氮空位（NV）中心系综的 Lipkin-Meshkov-Glick（LMG）模型。在外部微波驱动场的帮助下，我们发现NV自旋的相互作用可以很容易地控制，并且可以通过调整不同的参数来实现多种类型的LMG模型。在热力学极限下，自旋系综在临界点可以实现明显的非平衡二阶量子相变。此外，我们表明，可以通过定制 LMG 哈密顿量以在该混合量子系统中具有两轴反扭曲形式来生成自旋压缩态。
We propose an efficient scheme for simulating the Lipkin-Meshkov-Glick (LMG) model with nitrogen-vacancy (NV) center ensembles in diamond magnetically coupled to superconducting coplanar waveguide cavities. With the assistance of external microwave driving fields, we show that the interaction of the NV spins can be easily controlled, and several types of the LMG model can be realized by tuning the different parameters. Under the thermal dynamical limit, the distinct non-equilibrium second order quantum phase transition of the spin ensemble can be achieved at the critical point. Furthermore, we show that the spin squeezed state can be generated by tailoring the LMG Hamiltonian to possess the two-axis counter-twisting form in this hybrid quantum system.