A Sub-GHz Impedance-engineered Parametric Amplifier for the Readout of Sensors and Quantum Dots

Visa Vesterinen; Slawomir Simbierowicz; Robab Najafi Jabdaraghi; Leif Gronberg; Janne S. Lehtinen; Mika Prunnila; Joonas Govenius

doi:10.1109/TASC.2022.3148965

A Sub-GHz Impedance-engineered Parametric Amplifier for the Readout of Sensors and Quantum Dots

Visa Vesterinen, Slawomir Simbierowicz, Robab Najafi Jabdaraghi, Leif Gronberg, Janne S. Lehtinen, Mika Prunnila, Joonas Govenius

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

In the work on superconducting parametric amplifiers, the frequency band below one gigahertz is calling for systematic improvements. Despite a prospect for ultralow added noise, bandwidth limitations have slowed down the integration of such amplifiers into sub-GHz experiments demanding fast ($< 1\, \mu$s) readout speeds. Here, we study the impedance engineering of a flux-driven Josephson parametric amplifier (JPA) at 600 MHz. We propose, simulate and experimentally demonstrate a partially reconfigurable impedance transformer. The transformer enhances the JPA bandwidth to a state-of-the-art value of 10 MHz at 20 dB gain. Our amplifier has immediate applications in the readout of cryogenic sensors and in the reflectometry of quantum dots for spin qubit quantum computing.

Original language	English
Journal	IEEE Transactions on Applied Superconductivity
Volume	32
Issue number	4
Early online date	7 Feb 2022
DOIs	https://doi.org/10.1109/TASC.2022.3148965
Publication status	E-pub ahead of print - 7 Feb 2022
MoE publication type	A1 Journal article-refereed

Keywords

Bandwidth
Impedance
Inductance
Microwave amplifiers
quantum computing
Quantum dots
Resonators
SQUIDs
superconducting devices
Transformers

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title = "A Sub-GHz Impedance-engineered Parametric Amplifier for the Readout of Sensors and Quantum Dots",

abstract = "In the work on superconducting parametric amplifiers, the frequency band below one gigahertz is calling for systematic improvements. Despite a prospect for ultralow added noise, bandwidth limitations have slowed down the integration of such amplifiers into sub-GHz experiments demanding fast ($< 1\, \mu$s) readout speeds. Here, we study the impedance engineering of a flux-driven Josephson parametric amplifier (JPA) at 600 MHz. We propose, simulate and experimentally demonstrate a partially reconfigurable impedance transformer. The transformer enhances the JPA bandwidth to a state-of-the-art value of 10 MHz at 20 dB gain. Our amplifier has immediate applications in the readout of cryogenic sensors and in the reflectometry of quantum dots for spin qubit quantum computing.",

keywords = "Bandwidth, Impedance, Inductance, Microwave amplifiers, quantum computing, Quantum dots, Resonators, SQUIDs, superconducting devices, Transformers",

author = "Visa Vesterinen and Slawomir Simbierowicz and {Najafi Jabdaraghi}, Robab and Leif Gronberg and Lehtinen, {Janne S.} and Mika Prunnila and Joonas Govenius",

note = "Funding Information: This work was supported in part by the Academy of Finland through Grant 321700 and through its Centres of Excellence program under Grants 312059 and 312294, in part by EUFlagship on Quantum Technology under Grant H2020-FETFLAG-2018-03 through Projects 820363 OpenSuperQ and 820505 QMiCS, and in part by European Union?s Horizon 2020 Research and Innovation Programme under Grant agreement no. 824109 (European Microkelvin Platform project, EMP). Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

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A Sub-GHz Impedance-engineered Parametric Amplifier for the Readout of Sensors and Quantum Dots. / Vesterinen, Visa; Simbierowicz, Slawomir; Najafi Jabdaraghi, Robab ; Gronberg, Leif ; Lehtinen, Janne S.; Prunnila, Mika ; Govenius, Joonas.

In: IEEE Transactions on Applied Superconductivity, Vol. 32, No. 4, 01.06.2022.

Research output: Contribution to journal › Article › Scientific › peer-review

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A Sub-GHz Impedance-engineered Parametric Amplifier for the Readout of Sensors and Quantum Dots

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Keywords

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