Long-Range Interacting Many-Body Systems with Alkaline-Earth-Metal Atoms
Long-Range Interacting Many-Body Systems with Alkaline-Earth-Metal Atoms
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DOI：
10.1103/physrevlett.110.143602
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发表时间：
2013-04-02
影响因子：
8.6
通讯作者：
Lesanovsky, I.
中科院分区：
文献类型：
--
作者：
Olmos, B.;Yu, D.;Lesanovsky, I.
碱土金属原子可以表现出长程偶极相互作用，其通过三重态流形的P-3（0）- D-3（1）跃迁上的光子的相干交换产生。在玻色子锶的情况下，我们在这里讨论，这个过渡的波长为2.6 μ m，偶极矩为4.03 D，并存在一个魔波长允许创建的光学晶格是相同的状态P-3（0）和D-3（1）。这种相互作用使得实现和研究具有长程跳跃的硬核晶格玻色子的混合物，具有可调的无序和各向异性。我们推导了多体主方程，研究了激发输运的动力学，并分析了来自相干长程相互作用和集体耗散的光谱特征。我们的研究结果表明，碱土金属原子的晶格气体允许创建长寿命的集体原子态，并构成一个简单而通用的平台，探索多体系统与远程相互作用。因此，它们代表了采用里德伯气体、具有大磁矩的原子或极性分子的当前相关努力的替代方案。DOI：10.1103/PhysRevLett.110.143602
Alkaline-earth-metal atoms can exhibit long-range dipolar interactions, which are generated via the coherent exchange of photons on the P-3(0) - D-3(1) transition of the triplet manifold. In the case of bosonic strontium, which we discuss here, this transition has a wavelength of 2.6 mu m and a dipole moment of 4.03 D, and there exists a magic wavelength permitting the creation of optical lattices that are identical for the states P-3(0) and D-3(1). This interaction enables the realization and study of mixtures of hard-core lattice bosons featuring long-range hopping, with tunable disorder and anisotropy. We derive the many-body master equation, investigate the dynamics of excitation transport, and analyze spectroscopic signatures stemming from coherent long-range interactions and collective dissipation. Our results show that lattice gases of alkaline-earth-metal atoms permit the creation of long-lived collective atomic states and constitute a simple and versatile platform for the exploration of many-body systems with long-range interactions. As such, they represent an alternative to current related efforts employing Rydberg gases, atoms with large magnetic moment, or polar molecules. DOI: 10.1103/PhysRevLett.110.143602