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 \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.

arXiv comment15 pages, 8 figures, version 2

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Cited by in corpus (5)

• Enriching the quantum toolbox of ultracold molecules with Rydberg atoms
• Single-shot Non-destructive Quantum Sensing for Gaseous Samples with Hundreds of Chiral Molecules
• Quantum Membrane Phases in Synthetic Lattices of Cold Molecules or Rydberg Atoms
• Triatomic Photoassociation in an Ultracold Atom-Molecule Collision
• Characterization of the lowest excited-state ro-vibrational level of ${}^{23}$Na${}^{87}$Rb