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arXiv · 1609.04800

Synthetic dimensions and spin-orbit coupling with an optical clock transition

L. F. Livi·G. Cappellini·M. Diem·L. Franchi·C. Clivati·M. Frittelli·F. Levi·D. Calonico·J. Catani·M. Inguscio·L. Fallani
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Abstract

We demonstrate a novel way of synthesizing spin-orbit interactions in ultracold quantum gases, based on a single-photon optical clock transition coupling two long-lived electronic states of two-electron $^{173}$Yb atoms. By mapping the electronic states onto effective sites along a synthetic "electronic" dimension, we have engineered synthetic fermionic ladders with tunable magnetic fluxes. We have detected the spin-orbit coupling with fiber-link-enhanced clock spectroscopy and directly measured the emergence of chiral edge currents, probing them as a function of the magnetic field flux. These results open new directions for the investigation of topological states of matter with ultracold atomic gases.

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L. F. Livi, G. Cappellini, M. Diem, L. Franchi, C. Clivati, M. Frittelli, F. Levi, D. Calonico, J. Catani, M. Inguscio, L. Fallani. 2016-09-15. Synthetic dimensions and spin-orbit coupling with an optical clock transition. https://doi.org/10.1103/physrevlett.117.220401

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