Issue 36, 2020

Nondestructive dispersive imaging of rotationally excited ultracold molecules

Abstract

A barrier to realizing the potential of molecules for quantum information science applications is a lack of high-fidelity, single-molecule imaging techniques. Here, we present and theoretically analyze a general scheme for dispersive imaging of electronic ground-state molecules. Our technique relies on the intrinsic anisotropy of excited molecular rotational states to generate optical birefringence, which can be detected through polarization rotation of an off-resonant probe laser beam. Using 23Na87Rb and 87Rb133Cs as examples, we construct a formalism for choosing the molecular state to be imaged and the excited electronic states involved in off-resonant coupling. Our proposal establishes the relevant parameters for achieving degree-level polarization rotations for bulk molecular gases, thus enabling high-fidelity nondestructive imaging. We additionally outline requirements for the high-fidelity imaging of individually trapped molecules.

Graphical abstract: Nondestructive dispersive imaging of rotationally excited ultracold molecules

Article information

Article type
Paper
Submitted
25 Чер 2020
Accepted
17 Сер 2020
First published
24 Сер 2020

Phys. Chem. Chem. Phys., 2020,22, 20531-20544

Author version available

Nondestructive dispersive imaging of rotationally excited ultracold molecules

Q. Guan, M. Highman, E. J. Meier, G. R. Williams, V. Scarola, B. DeMarco, S. Kotochigova and B. Gadway, Phys. Chem. Chem. Phys., 2020, 22, 20531 DOI: 10.1039/D0CP03419C

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