Waiting time distributions in a two-level fluctuator coupled to a superconducting charge detector

Mate Jenei; Elina Potanina; Ruichen Zhao; Kuan Y. Tan; Alessandro Rossi; Tuomo Tanttu; Kok W. Chan; Vasilii Sevriuk; Mikko Mottonen; Andrew Dzurak

doi:10.1103/PhysRevResearch.1.033163

Waiting time distributions in a two-level fluctuator coupled to a superconducting charge detector

Mate Jenei^*, Elina Potanina, Ruichen Zhao, Kuan Y. Tan, Alessandro Rossi, Tuomo Tanttu, Kok W. Chan, Vasilii Sevriuk, Mikko Mottonen, Andrew Dzurak

^*Corresponding author for this work

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Abstract

We analyze charge fluctuations in a parasitic state strongly coupled to a superconducting Josephson-junction-based charge detector. The charge dynamics of the state resembles that of electron transport in a quantum dot with two charge states, and hence we refer to it as a two-level fluctuator. By constructing the distribution of waiting times from the measured detector signal and comparing it with a waiting time theory, we extract the electron in- and out-tunneling rates for the two-level fluctuator, which are severely asymmetric.

Original language	English
Article number	033163
Number of pages	6
Journal	PHYSICAL REVIEW RESEARCH
Volume	1
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevResearch.1.033163
Publication status	Published - 10 Dec 2019
MoE publication type	A1 Journal article-refereed

Keywords

SINGLE-ELECTRON TRANSISTOR
NOISE

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10.1103/PhysRevResearch.1.033163

Jenei_Waiting_Time.PhysRevResearch.1.033163Final published version, 596 KBLicence: CC BY

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SPINBUS: Quantum Bus for a Quantum Computer Based on Spins in Silicon
Tan, K.
01/09/2020 → 31/08/2022
Project: Academy of Finland: Other research funding
CRYOMET: Fast Cryogenic Microwave Photon Power Metrology in Superconducting Quantum Circuits (CRYOMET)
Tan, K. & Zamora Zamora, R.
01/09/2018 → 31/08/2022
Project: Academy of Finland: Other research funding
Finnish Centre of Excellence in Quantum Technology
Möttönen, M., Tuorila, J., Mäkinen, A., Ollikainen, T., Hazra, D. & Heinsoo, J.
01/01/2018 → 31/12/2019
Project: Academy of Finland: Other research funding

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title = "Waiting time distributions in a two-level fluctuator coupled to a superconducting charge detector",

abstract = "We analyze charge fluctuations in a parasitic state strongly coupled to a superconducting Josephson-junction-based charge detector. The charge dynamics of the state resembles that of electron transport in a quantum dot with two charge states, and hence we refer to it as a two-level fluctuator. By constructing the distribution of waiting times from the measured detector signal and comparing it with a waiting time theory, we extract the electron in- and out-tunneling rates for the two-level fluctuator, which are severely asymmetric.",

keywords = "SINGLE-ELECTRON TRANSISTOR, NOISE",

author = "Mate Jenei and Elina Potanina and Ruichen Zhao and Tan, {Kuan Y.} and Alessandro Rossi and Tuomo Tanttu and Chan, {Kok W.} and Vasilii Sevriuk and Mikko Mottonen and Andrew Dzurak",

year = "2019",

month = dec,

day = "10",

doi = "10.1103/PhysRevResearch.1.033163",

language = "English",

volume = "1",

journal = "PHYSICAL REVIEW RESEARCH",

issn = "2643-1564",

publisher = "American Physical Society",

number = "3",

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Waiting time distributions in a two-level fluctuator coupled to a superconducting charge detector. / Jenei, Mate; Potanina, Elina; Zhao, Ruichen; Tan, Kuan Y.; Rossi, Alessandro; Tanttu, Tuomo; Chan, Kok W.; Sevriuk, Vasilii; Mottonen, Mikko; Dzurak, Andrew.

In: PHYSICAL REVIEW RESEARCH, Vol. 1, No. 3, 033163, 10.12.2019.

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

TY - JOUR

T1 - Waiting time distributions in a two-level fluctuator coupled to a superconducting charge detector

AU - Jenei, Mate

AU - Potanina, Elina

AU - Zhao, Ruichen

AU - Tan, Kuan Y.

AU - Rossi, Alessandro

AU - Tanttu, Tuomo

AU - Chan, Kok W.

AU - Sevriuk, Vasilii

AU - Mottonen, Mikko

AU - Dzurak, Andrew

PY - 2019/12/10

Y1 - 2019/12/10

N2 - We analyze charge fluctuations in a parasitic state strongly coupled to a superconducting Josephson-junction-based charge detector. The charge dynamics of the state resembles that of electron transport in a quantum dot with two charge states, and hence we refer to it as a two-level fluctuator. By constructing the distribution of waiting times from the measured detector signal and comparing it with a waiting time theory, we extract the electron in- and out-tunneling rates for the two-level fluctuator, which are severely asymmetric.

AB - We analyze charge fluctuations in a parasitic state strongly coupled to a superconducting Josephson-junction-based charge detector. The charge dynamics of the state resembles that of electron transport in a quantum dot with two charge states, and hence we refer to it as a two-level fluctuator. By constructing the distribution of waiting times from the measured detector signal and comparing it with a waiting time theory, we extract the electron in- and out-tunneling rates for the two-level fluctuator, which are severely asymmetric.

KW - SINGLE-ELECTRON TRANSISTOR

KW - NOISE

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DO - 10.1103/PhysRevResearch.1.033163

M3 - Article

VL - 1

JO - PHYSICAL REVIEW RESEARCH

JF - PHYSICAL REVIEW RESEARCH

SN - 2643-1564

IS - 3

M1 - 033163

ER -

Waiting time distributions in a two-level fluctuator coupled to a superconducting charge detector

Abstract

Keywords

Access to Document

SPINBUS: Quantum Bus for a Quantum Computer Based on Spins in Silicon

CRYOMET: Fast Cryogenic Microwave Photon Power Metrology in Superconducting Quantum Circuits (CRYOMET)

Finnish Centre of Excellence in Quantum Technology

OtaNano

OtaNano - Nanofab

Cite this