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.
Microwave shielding of ultracold polar molecules with imperfectly circular polarization
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abstract
We investigate the use of microwave radiation to produce a repulsive shield between pairs of ultracold polar molecules and prevent collisional losses that occur when molecular pairs reach short range. We carry out coupled-channels calculations on RbCs+RbCs and CaF+CaF collisions in microwave fields. We show that effective shielding requires predominantly circular polarization, but can still be achieved with elliptical polarization that is around 90% circular.
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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.