Cited 1 time in webofscience Cited 1 time in scopus

Measuring a Quantum Dot with an Impedance-Matching On-Chip Superconducting LC Resonator at Gigahertz Frequencies

Title
Measuring a Quantum Dot with an Impedance-Matching On-Chip Superconducting LC Resonator at Gigahertz Frequencies
Authors
Harabula, M. -C.Hasler, T.Fueloep, G.Jung, Min KyungRanjan, V.Schoenenberger, C.
DGIST Authors
Jung, Min Kyung
Issue Date
2017-11
Citation
Physical Review Applied, 8(5)
Type
Article
Article Type
Article
ISSN
2331-7019
Abstract
We report on the realization of a bonded-bridge on-chip superconducting coil and its use in impedance matching a highly ohmic quantum dot (QD) to a 3-GHz measurement setup. The coil, modeled as a lumped-element LC resonator, is more compact and has a wider bandwidth than resonators based on coplanar transmission lines (e.g., λ/4 impedance transformers and stub tuners), at potentially better signal-to-noise ratios. Specifically, for measurements of radiation emitted by the device, such as shot noise, the 50×-larger bandwidth reduces the time to acquire the spectral density. The resonance frequency, close to 3.25 GHz, is 3 times higher than that of the one previously reported, a wire-bonded coil. As a proof of principle, we fabricate an LC circuit that achieves impedance matching to an approximately 15-kΩ load and validate it with a load defined by a carbon nanotube QD, whose shot noise we measure in the Coulomb-blockade regime. © 2017 American Physical Society.
URI
http://hdl.handle.net/20.500.11750/4851
DOI
10.1103/PhysRevApplied.8.054006
Publisher
American Physical Society
Related Researcher
Files:
There are no files associated with this item.
Collection:
Intelligent Devices and Systems Research Group1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE