Bichromatic Imaging of Single Molecules in an Optical Tweezer Array

Abstract

We report on a novel bichromatic fluorescent imaging scheme for background-free detection of single CaF molecules trapped in an optical tweezer array. By collecting fluorescence on one optical transition while using another for laser-cooling, we achieve an imaging fidelity of 97.7(2)% and a non-destructive detection fidelity of 95.5(6)%. We characterize loss mechanisms of our scheme, many of which are generically relevant to the fluorescent detection of trapped molecules, including two-photon decay and admixtures of higher excited states that are induced by the trapping light.

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Cited by in corpus (9)

• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
• Raman Sideband Cooling of Molecules in an Optical Tweezer Array
• A Blue-Detuned Magneto-Optical Trap of CaF Molecules
• Optical Tweezer Arrays of Erbium Atoms
• Quantum simulation of the central spin model with a Rydberg atom and polar molecules in optical tweezers
• Ultracold Interactions between Ions and Polar Molecules
• Single-atom imaging of ${}^{173}$Yb in optical tweezers loaded by a five-beam magneto-optical trap
• Parity-Doublet Coherence Times in Optically Trapped Polyatomic Molecules