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Rydberg Atom-Enabled Spectroscopy of Polar Molecules via Förster Resonance Energy Transfer
Sabrina Patsch1, Martin Zeppenfeld2, Christiane P Koch1
1Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195Berlin, Germany.
Static electric fields control energy transfer between Rydberg atoms and polar molecules. This enables state-resolved, non-destructive molecular detection and spectroscopy, with applications in quantum technologies and chemical studies.
Area of Science:
- Quantum optics
- Physical chemistry
- Atomic physics
Background:
- Non-radiative energy transfer (NRET) between Rydberg atoms and polar molecules is a key interaction.
- Static electric fields can precisely control this energy transfer process.
Purpose of the Study:
- To demonstrate state-resolved, non-destructive detection and spectroscopy of polar molecules using Rydberg atom interactions.
- To explore the feasibility and conditions for Rydberg atom-enabled spectroscopy.
Main Methods:
- Utilizing static electric fields to control NRET between Rydberg atoms and polar molecules.
- Analyzing molecular lineshapes to identify transition types.
- Investigating collision-mediated spectroscopy using ammonia as a model system.
Main Results:
- Demonstrated that electric field control of NRET enables state-resolved molecular detection.
- Showed that the lineshape of the spectroscopic signal is indicative of the molecular transition type.
- Identified specific conditions (electric field strength, velocity, density) for effective collision-mediated spectroscopy.
Conclusions:
- Rydberg atom-enabled spectroscopy offers a versatile and non-destructive method for polar molecule detection.
- The technique is feasible with current experimental capabilities.
- Provides a foundational tool for quantum technologies and chemical reaction studies involving polar molecules.
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