Strong Parametric Coupling between Two Ultracoherent Membrane Modes

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We demonstrate parametric coupling between two modes of a silicon nitride membrane. We achieve the coupling by applying an oscillating voltage to a sharp metal tip that approaches the membrane surface to within a few 100 nm. When the voltage oscillation frequency is equal to the mode frequency difference, the modes exchange energy periodically and faster than their free energy decay rate. This flexible method can potentially be useful for rapid state control and transfer between modes, and is an important step toward parametric spin sensing experiments with membrane resonators.

Original languageEnglish
Article number094301
JournalPhysical Review Letters
Volume128
Issue number9
Number of pages6
ISSN0031-9007
DOIs
Publication statusPublished - 1 Mar 2022

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