Spin dynamics of two bosons in an optical lattice site: a role of anharmonicity and anisotropy of the trapping potential
arXiv:1303.5232 · doi:10.1103/PhysRevA.88.013608
Abstract
We study a spin dynamics of two magnetic Chromium atoms trapped in a single site of a deep optical lattice in a resonant magnetic field. Dipole-dipole interactions couple spin degrees of freedom of the two particles to their motion in the site. The motion is quantized, therefore a trap geometry combined with two-body contact s-wave interactions influence a spin dynamics through the energy spectrum of the two atom system. Anharmonicity and anisotropy of the site results in a `fine' structure of two body eigenenergies. The structure can be easily resolved by a weak magnetic dipole-dipole interactions. As an example we examine the effect of anharmonicity and anisotropy of the binding potential on the Einstein-de Haas effect. We show that the weak dipolar interactions provide a perfect tool for a precision spectroscopy of the energy spectrum of the interacting few particle system.
14 pages, 8 figures
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- Making two dysprosium atoms rotate - Einstein-de Haas effect revisited
- Resonant dynamics of chromium condensates
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