Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session W52: Photonic and Solid State Quantum Sensors
3:00 PM–6:00 PM,
Thursday, March 7, 2024
Room: 201AB
Sponsoring
Unit:
DQI
Chair: Anthony Brady, University of Arizona
Abstract: W52.00007 : Cryogenic Transimpedance Amplifier for Condensed Matter Physics Experiments*
4:12 PM–4:24 PM
Presenter:
Oskari Ponkala
(VTT Technical Research Centre of Finland Ltd., Aalto University)
Authors:
Oskari Ponkala
(VTT Technical Research Centre of Finland Ltd., Aalto University)
Heorhii Bohuslavskyi
(VTT Technical Research Centre of Finland Ltd)
In a comparison between cryogenic voltage (VA) and transimpedance (TIA) amplifiers, low input and output impedance TIAs offer wider bandwidth compared to high input impedance VAs, which exhibit RC damping due to cable capacitance [3]. Additionally, TIAs using GaAs high-electron-mobility transistors (HEMTs) outperform cryogenic VAs in terms of resolution, thanks to their flat input referred noise floor within the MHz range [1,4].
In this work, we present the Bode plot and noise analysis of common-source VAs and TIAs using commercial GaAs pHEMTs at 300 K, 77 K and 4 K. We begin the TIA design based on [1] and optimize the TIA architecture with the help of SPICE modeling. We discuss the use of our developed cryogenic TIAs for spin qubit read-out, shot-noise measurements in quantum Hall effect and other applications.
[1] Appl. Phys. Lett. 121, 184003 (2022)
[2] PRX Quantum 3, 010352 (2022)
[3] J. Phys. Soc. Jpn. 90, 102001 (2021)
[4] Rev. Sci. Instrum. 85, 054704 (2014)
*We acknowledge support from EU Horizon 2020 project No.101113983, the Academy of Finland project No.350325, and Business Finland project No.128291.
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