A chamber-matrix calibration using spin-resolved Rydberg-EIT spectroscopy lets the authors synthesize σ−, π, and σ+ microwave polarizations with >99% fidelity in a reflective chamber, extended off-resonance by two-photon transitions.
Repulsive shield between polar molecules
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abstract
We propose and analyze a technique that allows to suppress inelastic collisions and simultaneously enhance elastic interactions between cold polar molecules. The main idea is to cancel the leading dipole-dipole interaction with a suitable combination of static electric and microwave fields in such a way that the remaining van-der-Waals-type potential forms a three-dimensional repulsive shield. We analyze the elastic and inelastic scattering cross sections relevant for evaporative cooling of polar molecules and discuss the prospect for the creation of crystalline structures.
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physics.atom-ph 1years
2025 1verdicts
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High-Fidelity Microwave-Polarization Control in a Rydberg-Ensemble Experiment
A chamber-matrix calibration using spin-resolved Rydberg-EIT spectroscopy lets the authors synthesize σ−, π, and σ+ microwave polarizations with >99% fidelity in a reflective chamber, extended off-resonance by two-photon transitions.