Efficient pathway to NaCs ground state molecules

Author:

Warner ClaireORCID,Bigagli NiccolòORCID,Lam Aden Z,Yuan WeijunORCID,Zhang SiweiORCID,Stevenson IanORCID,Will SebastianORCID

Abstract

Abstract We present a study of two-photon pathways for the transfer of NaCs molecules to their rovibrational ground state. Starting from NaCs Feshbach molecules, we perform bound-bound excited state spectroscopy in the wavelength range from 900 nm to 940 nm, covering more than 30 vibrational states of the c 3 Σ + , b 3 Π , and B 1 Π electronic states. Analyzing the rotational substructure, we identify the highly mixed c 3 Σ 1 + | v = 22 b 3 Π 1 | v = 54 state as an efficient bridge for stimulated Raman adiabatic passage. We demonstrate transfer into the NaCs ground state with an efficiency of up to 88(4)%. Highly efficient transfer is critical for the realization of many-body quantum phases of strongly dipolar NaCs molecules and high fidelity detection of single molecules, for example, in spin physics experiments in optical lattices and quantum information experiments in optical tweezer arrays.

Funder

Natural Sciences and Engineering Research Council of Canada

Alfred P. Sloan Foundation

Office of Naval Research Global

Croucher Foundation

Columbia University

Division of Physics

Publisher

IOP Publishing

Subject

General Physics and Astronomy

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