Homemade-HEMT-based transimpedance amplifier for high-resolution shot-noise measurements

Takase Shimizu; Masayuki Hashisaka; Heorhii Bohuslavskyi; Takafumi Akiho; Norio Kumada; Shingo Katsumoto; Koji Muraki

doi:10.1063/5.0076196

Homemade-HEMT-based transimpedance amplifier for high-resolution shot-noise measurements

Takase Shimizu, Masayuki Hashisaka^*, Heorhii Bohuslavskyi, Takafumi Akiho, Norio Kumada, Shingo Katsumoto, Koji Muraki

^*Corresponding author for this work

Not published at VTT

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

4 Citations (Scopus)

Abstract

We report a cryogenic transimpedance amplifier (TA) suitable for cross-correlation current-noise measurements. The TA comprises homemade high-electron-mobility transistors with high transconductance and low noise characteristics, fabricated in an AlGaAs/GaAs heterostructure. The low input-referred noise and wide frequency band of the TA lead to a high resolution in current-noise measurements. The TA’s low input impedance suppresses unwanted crosstalk between two distinct currents from a sample, justifying the advantage of the TA for cross-correlation measurements. We demonstrate the high resolution of a TA-based experimental setup by measuring the shot noise generated at a quantum point contact in a quantum Hall system.

Original language	English
Article number	124712
Journal	Review of Scientific Instruments
Volume	92
Issue number	12
DOIs	https://doi.org/10.1063/5.0076196
Publication status	Published - 1 Dec 2021
MoE publication type	A1 Journal article-refereed

Funding

This study was supported by the Japan Society for the Promotion of Science KAKENHI (Grant Nos. JP19H05603, JP21H01022, and JP19H00652) and JST PRESTO (Grant No. JP17940407).

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title = "Homemade-HEMT-based transimpedance amplifier for high-resolution shot-noise measurements",

abstract = "We report a cryogenic transimpedance amplifier (TA) suitable for cross-correlation current-noise measurements. The TA comprises homemade high-electron-mobility transistors with high transconductance and low noise characteristics, fabricated in an AlGaAs/GaAs heterostructure. The low input-referred noise and wide frequency band of the TA lead to a high resolution in current-noise measurements. The TA{\textquoteright}s low input impedance suppresses unwanted crosstalk between two distinct currents from a sample, justifying the advantage of the TA for cross-correlation measurements. We demonstrate the high resolution of a TA-based experimental setup by measuring the shot noise generated at a quantum point contact in a quantum Hall system.",

author = "Takase Shimizu and Masayuki Hashisaka and Heorhii Bohuslavskyi and Takafumi Akiho and Norio Kumada and Shingo Katsumoto and Koji Muraki",

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AU - Shimizu, Takase

AU - Hashisaka, Masayuki

AU - Bohuslavskyi, Heorhii

AU - Akiho, Takafumi

AU - Kumada, Norio

AU - Katsumoto, Shingo

AU - Muraki, Koji

PY - 2021/12/1

Y1 - 2021/12/1

N2 - We report a cryogenic transimpedance amplifier (TA) suitable for cross-correlation current-noise measurements. The TA comprises homemade high-electron-mobility transistors with high transconductance and low noise characteristics, fabricated in an AlGaAs/GaAs heterostructure. The low input-referred noise and wide frequency band of the TA lead to a high resolution in current-noise measurements. The TA’s low input impedance suppresses unwanted crosstalk between two distinct currents from a sample, justifying the advantage of the TA for cross-correlation measurements. We demonstrate the high resolution of a TA-based experimental setup by measuring the shot noise generated at a quantum point contact in a quantum Hall system.

AB - We report a cryogenic transimpedance amplifier (TA) suitable for cross-correlation current-noise measurements. The TA comprises homemade high-electron-mobility transistors with high transconductance and low noise characteristics, fabricated in an AlGaAs/GaAs heterostructure. The low input-referred noise and wide frequency band of the TA lead to a high resolution in current-noise measurements. The TA’s low input impedance suppresses unwanted crosstalk between two distinct currents from a sample, justifying the advantage of the TA for cross-correlation measurements. We demonstrate the high resolution of a TA-based experimental setup by measuring the shot noise generated at a quantum point contact in a quantum Hall system.

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JO - Review of Scientific Instruments

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Homemade-HEMT-based transimpedance amplifier for high-resolution shot-noise measurements

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