Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session M09: Advancing Techologies and Techniques for Trapped Ions
2:00 PM–4:00 PM,
Wednesday, June 1, 2022
Room: Salon 11/12
Chair: Phil Richerme, IU
Abstract: M09.00009 : Electrically adjustable inductance for cryogenic RF applications M. Schubert1*, M. Neumann1, M. Schilling1, B. Hampel1 1Institut für Elektrische Messtechnik und Grundlagen der Elektrotechnik, TU Braunschweig, Hans-Sommer-Str. 66, Braunschweig 38106, Germany *firstname.lastname@example.org
3:36 PM–3:48 PM
In this work, we integrate an electrically tunable cryogenic resonance circuit with a voltage-controlled inductor to provide RF fields for trapping ions. The structure consists of two ideally coupled coils. The current and thus the magnetic flux from one coil can be adjusted with a field-effect transistor used as a voltage-controlled resistor. The relationship between the inductance of the coil setup and the magnetic field generated by the current can be derived using the law of induction. Simulations show that with a sufficient coupling factor, significant changes in inductance can be achieved. We will present cryogenic measurements of an electrically tunable resonance circuit, which can be used to fine-tune the impedance matching and the resonant frequency of circuits.
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