Nature research paper: Quantum-enabled millimetre wave to optical transduction using neutral atoms
Rb trap. The atoms are emitted from a dispenser source mounted at room temperature, propagate through a small aperture at the back of the grating towards the capture volume of the grating MOT. The Helmholtz coils and all supporting structures are thermalized to 40K., Millimeter wave circuit used for characterizing the superconducting cavity and sending in mmwave photons for the interconversion experiment.
Most of the power from the “science” source is diverted towards a power detector, which is used to actively stabilize the mmwave power using a voltage controlled attenuator . Both the science and the tuning sources are equipped with rf-switches to fully extinguish any signal to the cavity., The levels and light polarizations involved in transduction. The mmwave cavity science mode is linearly polarized along the optical cavity direction.
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