Nondestructive dispersive imaging of rotationally excited ultracold molecules

• URL: http://arxiv.org/abs/2006.03484v2
• Date: Wed, 24 Jun 2020 21:11:53 GMT
• Title: Nondestructive dispersive imaging of rotationally excited ultracold molecules
• Authors: Qingze Guan, Michael Highman, Eric J. Meier, Garrett R. Williams, Vito Scarola, Svetlana Kotochigova, Brian DeMarco, Bryce Gadway
• Abstract summary: 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 \narb and \rbcs 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.

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