Study of the inter-species interactions in an ultracold dipolar mixture

C. Politi; A. Trautmann; P. Ilzhöfer; G. Durastante; M. J. Mark; M. Modugno; F. Ferlaino

doi:10.1103/physreva.105.023304

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arXiv · 2110.09980

Study of the inter-species interactions in an ultracold dipolar mixture

C. Politi·A. Trautmann·P. Ilzhöfer·G. Durastante·M. J. Mark·M. Modugno·F. Ferlaino

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Abstract

We experimentally and theoretically investigate the influence of the dipole-dipole interactions (DDIs) on the total inter-species interaction in an erbium-dysprosium mixture. By rotating the dipole orientation we are able to tune the effect of the long-range and anisotropic DDI, and therefore the in-trap clouds displacement. We present a theoretical description for our binary system based on an extended Gross-Pitaevskii (eGP) theory, including the single-species beyond mean-field terms, and we predict a lower and an upper bound for the inter-species scattering length $a_{12}$. Our work is a first step towards the investigation of the experimentally unexplored dipolar miscibility-immiscibility phase diagram and the realization of quantum droplets and supersolid states with heteronuclear dipolar mixtures.

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C. Politi, A. Trautmann, P. Ilzhöfer, G. Durastante, M. J. Mark, M. Modugno, F. Ferlaino. 2021-10-19. Study of the inter-species interactions in an ultracold dipolar mixture. https://doi.org/10.1103/physreva.105.023304

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