Journal
APPLIED PHYSICS LETTERS
Volume 123, Issue 10, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0157516
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We have achieved strong coupling between gigahertz-frequency nanomechanical resonators and a frequency-tunable superconducting microwave resonator through a galvanically bonded flip-chip method. By tuning the microwave resonator using an external magnetic field, we have observed a series of hybridized microwave-mechanical modes and reported coupling strengths of approximately 15 MHz at cryogenic temperatures. The demonstrated multi-chip approach allows for flexible and rapid characterization and simplified fabrication, potentially enabling coupling between a variety of quantum systems.
We demonstrate strong coupling of gigahertz-frequency nanomechanical resonators to a frequency-tunable superconducting microwave resonator via a galvanically bonded flip-chip method. By tuning the microwave resonator with an external magnetic field, we observe a series of hybridized microwave-mechanical modes and report coupling strengths of similar to 15 MHz at cryogenic temperatures. The demonstrated multi chip approach provides flexible rapid characterization and simplified fabrication and could potentially enable coupling between a variety of quantum systems. Our work represents a step toward a plug-and-play architecture for building more complex hybrid quantum systems.
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