A split-cavity design for the incorporation of a DC bias in a 3D microwave cavity

Martijn A. Cohen, Mingyun Yuan, B.W.A. de Jong, Ewout Beukers, Sal J. Bosman, Gary A. Steele

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
29 Downloads (Pure)

Abstract

We report on a technique for applying a DC bias in a 3D microwave cavity. We achieve this by isolating the two halves of the cavity with a dielectric and directly using them as DC electrodes. As a proof of concept, we embed a variable capacitance diode in the cavity and tune the resonant frequency with a DC voltage, demonstrating the incorporation of a DC bias into the 3D cavity with no measurable change in its quality factor at room temperature. We also characterize the architecture at millikelvin temperatures and show that the split cavity design maintains a quality factor Qi ∼ 8.8 × 105, making it promising for future quantum applications.

Original languageEnglish
Article number172601
Number of pages4
JournalApplied Physics Letters
Volume110
Issue number17
DOIs
Publication statusPublished - 24 Apr 2017

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