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  • 2112.07766v1

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The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers

Research output: Working paper › Preprint

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The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers. / Peatáin, Searbhán Ó; Dixon, Tom; Meeson, Phil J. et al.
Arxiv, 2021.

Research output: Working paper › Preprint

Harvard

Peatáin, SÓ, Dixon, T, Meeson, PJ, Williams, J, Kafanov, S & Pashkin, YA 2021 'The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers' Arxiv. <https://arxiv.org/abs/2112.07766v1>

APA

Peatáin, S. Ó., Dixon, T., Meeson, P. J., Williams, J., Kafanov, S., & Pashkin, Y. A. (2021). The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers. Arxiv. https://arxiv.org/abs/2112.07766v1

Vancouver

Peatáin SÓ, Dixon T, Meeson PJ, Williams J, Kafanov S, Pashkin YA. The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers. Arxiv. 2021 Dec 14.

Author

Peatáin, Searbhán Ó ; Dixon, Tom ; Meeson, Phil J. et al. / The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers. Arxiv, 2021.

Bibtex

@techreport{69c753b3cbc049518aab9f9761c92b52,
title = "The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers",
abstract = "We have simulated the performance of the Josephson Travelling Wave Parametric Amplifier (JTWPA) based on the one-dimensional array of RF SQUIDs. Unlike the ideal model in which all SQUIDs are assumed to be identical, we allowed variation of the device parameters such as the geometric inductance of the SQUID loop, capacitance to ground, Josephson junction capacitance and critical current. Our simulations confirm the negative effects of variation of the device parameters leading to microwave reflections between individual cells and the shift of the flux bias from the optimal point. The strongest effect is caused by the variation of the geometric inductance as it varies both the wave impedance and the flux bias. The most detrimental, however, are point defects, such as shorts to ground making the circuit opaque to microwaves. This imposes stringent requirements on the fabrication process making it extremely challenging. We highlight the strict limitations on parameter spread in these devices while also discussing the robustness of the scheme to variation",
keywords = "cond-mat.supr-con",
author = "Peat{\'a}in, {Searbh{\'a}n {\'O}} and Tom Dixon and Meeson, {Phil J.} and Jonathan Williams and Sergey Kafanov and Pashkin, {Yuri A.}",
note = "8 pages, 6 figures",
year = "2021",
month = dec,
day = "14",
language = "English",
publisher = "Arxiv",
type = "WorkingPaper",
institution = "Arxiv",

}

RIS

TY - UNPB

T1 - The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers

AU - Peatáin, Searbhán Ó

AU - Dixon, Tom

AU - Meeson, Phil J.

AU - Williams, Jonathan

AU - Kafanov, Sergey

AU - Pashkin, Yuri A.

N1 - 8 pages, 6 figures

PY - 2021/12/14

Y1 - 2021/12/14

N2 - We have simulated the performance of the Josephson Travelling Wave Parametric Amplifier (JTWPA) based on the one-dimensional array of RF SQUIDs. Unlike the ideal model in which all SQUIDs are assumed to be identical, we allowed variation of the device parameters such as the geometric inductance of the SQUID loop, capacitance to ground, Josephson junction capacitance and critical current. Our simulations confirm the negative effects of variation of the device parameters leading to microwave reflections between individual cells and the shift of the flux bias from the optimal point. The strongest effect is caused by the variation of the geometric inductance as it varies both the wave impedance and the flux bias. The most detrimental, however, are point defects, such as shorts to ground making the circuit opaque to microwaves. This imposes stringent requirements on the fabrication process making it extremely challenging. We highlight the strict limitations on parameter spread in these devices while also discussing the robustness of the scheme to variation

AB - We have simulated the performance of the Josephson Travelling Wave Parametric Amplifier (JTWPA) based on the one-dimensional array of RF SQUIDs. Unlike the ideal model in which all SQUIDs are assumed to be identical, we allowed variation of the device parameters such as the geometric inductance of the SQUID loop, capacitance to ground, Josephson junction capacitance and critical current. Our simulations confirm the negative effects of variation of the device parameters leading to microwave reflections between individual cells and the shift of the flux bias from the optimal point. The strongest effect is caused by the variation of the geometric inductance as it varies both the wave impedance and the flux bias. The most detrimental, however, are point defects, such as shorts to ground making the circuit opaque to microwaves. This imposes stringent requirements on the fabrication process making it extremely challenging. We highlight the strict limitations on parameter spread in these devices while also discussing the robustness of the scheme to variation

KW - cond-mat.supr-con

M3 - Preprint

BT - The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers

PB - Arxiv

ER -