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 ^173Yb atoms. By mapping the electronic states onto effective sites along a synthetic "electronic" dimension, we have engineered fermionic ladders with synthetic magnetic flux in an experimental configuration that has allowed us to achieve uniform fluxes on a lattice with minimal requirements and unprecedented tunability. 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 flux. These results open new directions for the investigation of topological states of matter with ultracold atomic gases.

Synthetic Dimensions and Spin-Orbit Coupling with an Optical Clock Transition / Livi, L F; Cappellini, G; Diem, Marcel; Franchi, L; Clivati, C; Frittelli, M; Levi, F; Calonico, D; Catani, J; Inguscio, M; Fallani, L. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 117:22(2016), p. 220401. [10.1103/PhysRevLett.117.220401]

Synthetic Dimensions and Spin-Orbit Coupling with an Optical Clock Transition

Cappellini, G;DIEM, MARCEL;Clivati, C;Levi, F;Calonico, D;Inguscio, M;
2016

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 ^173Yb atoms. By mapping the electronic states onto effective sites along a synthetic "electronic" dimension, we have engineered fermionic ladders with synthetic magnetic flux in an experimental configuration that has allowed us to achieve uniform fluxes on a lattice with minimal requirements and unprecedented tunability. 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 flux. These results open new directions for the investigation of topological states of matter with ultracold atomic gases.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/57405
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