Gate-tunable kinetic inductances for superconducting circuits

Gate-tunable kinetic inductances for superconducting circuits

Splitthoff, L.J. (TU Delft QRD/Andersen Lab)

Kouwenhoven, Leo P. (promotor)
Andersen, C.K. (copromotor)

Delft University of Technology

2024-04-24

Superconducting circuits in cryogenic environments form an excellent material platform for the realization and study of quantum systems.
In this thesis, we continue the exploration of novel types of circuit elements which expand the circuit quantum electrodynamics toolbox to enable exotic, and potentially better circuit implementations. To this end, we combine the study of condensed matter systems and circuit quantum electrodynamics in what is called hybrid cQED experiments to arrive at the implementation of gate-tunable kinetic inductances for superconducting circuits. This discovery shed new light on the physics of gate-tunable kinetic inductances and enabled the observation of emergent phenomena in gate-tunable metamaterials, in particular the phase transition in a bosonic Su-Schrieffer-Heeger chain. Moreover, as gate-tunable kinetic inductances became available we realized tunable resonators and parametric amplifiers for enhanced control and readout of superconducting circuits.

Gate-tunable superconducting circuits
Resonator-based parametric amplifiers
Topological metamaterials
Proximitized nanowires

https://doi.org/10.4233/uuid:2ee2a492-6588-46db-aa6a-7056fd37fd24

978-94-6384-540-3

2024-04-15

Institutional Repository

doctoral thesis

© 2024 L.J. Splitthoff