Abstract
Recent years have witnessed considerable interest in simulating the dynamics of complex many-body systems by well-controlled cold atom model systems. Among others, magnetic ordering phenomena draw a lot of attention. We demonstrated an unconventional approach to light mediated atomic interactions using laser light undergoing diffraction [1]. Diffractive propagation of periodically modulated light fields leads to an exchange between phase and amplitude modulated planes (Talbot effect) which can be used to couple atomic degrees of freedom. In a feedback scheme this can lead to the spontaneous formation of coupled lattices in the light field and the atomic degrees of freedom. After adiabatic elimination of the dynamics of the light field, one is left with light mediated atomic interactions. The coupling can occur via optomechanical nonlinearities [1] or via optical pumping [2]. In the latter case, the result is a spontaneous magnetic ordering in the atomic cloud, a spin or a magnetic dipole pattern [2]. We will provide further details on the latter as well as evidence for novel alignment patterns, corresponding to quadrupole states.
© 2017 IEEE
PDF ArticleMore Like This
I. Kresic, P. M. Gomes, A. Camara, G. Labeyrie, G. L. Oppo, W. J. Firth, G. R. M. Robb, E. Tesio, P.F. Griffin, A. S. Arnold, R. Kaiser, and T. Ackemann
EC_3_3 European Quantum Electronics Conference (EQEC) 2015
V. M. Entin, D. B. Tretyakov, I. I. Beterov, and I. I. Ryabtsev
EA2_2 European Quantum Electronics Conference (EQEC) 2009
I. Krešić, G. Labeyrie, G. R. M. Robb, G.-L. Oppo, P. M. Gomes, P. Griffin, W. J. Firth, R. Kaiser, and T. Ackemann
NpW2C.6 Nonlinear Photonics (NP) 2018