Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator

Andrew Guthrie; Christoforus Dimas Satrya; Yu Cheng Chang; Paul Menczel; Franco Nori; Jukka P. Pekola

doi:10.1103/PhysRevApplied.17.064022

Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator

Andrew Guthrie, Christoforus Dimas Satrya, Yu Cheng Chang, Paul Menczel, Franco Nori, Jukka P. Pekola

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Abstract

Superconducting circuits present a promising platform with which to realize a quantum refrigerator. Motivated by this, we fabricate and perform spectroscopy of a gated Cooper-pair box, capacitively coupled to two superconducting coplanar-waveguide resonators with different frequencies. We experimentally demonstrate the strong coupling of a charge qubit to two superconducting resonators, with the ability to perform voltage driving of the qubit at gigahertz frequencies. We go on to discuss how the measured device could be modified to operate as a cyclic quantum refrigerator by terminating the resonators with normal-metal resistors acting as heat baths.

Original language	English
Article number	064022
Pages (from-to)	1-12
Number of pages	12
Journal	Physical Review Applied
Volume	17
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevApplied.17.064022
Publication status	Published - Jun 2022
MoE publication type	A1 Journal article-refereed

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10.1103/PhysRevApplied.17.064022

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title = "Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator",

abstract = "Superconducting circuits present a promising platform with which to realize a quantum refrigerator. Motivated by this, we fabricate and perform spectroscopy of a gated Cooper-pair box, capacitively coupled to two superconducting coplanar-waveguide resonators with different frequencies. We experimentally demonstrate the strong coupling of a charge qubit to two superconducting resonators, with the ability to perform voltage driving of the qubit at gigahertz frequencies. We go on to discuss how the measured device could be modified to operate as a cyclic quantum refrigerator by terminating the resonators with normal-metal resistors acting as heat baths. ",

author = "Andrew Guthrie and Satrya, {Christoforus Dimas} and Chang, {Yu Cheng} and Paul Menczel and Franco Nori and Pekola, {Jukka P.}",

note = "| openaire: EC/H2020/742559/EU//SQH Funding Information: We acknowledge Dr. Joonas Peltonen, Dr. Dmitry Golubev, Dr. George Thomas, Dr. Neill Lambert, and Ilari M{\"a}kinen for technical support and insightful discussions. This work is financially supported through the Foundational Questions Institute Fund (FQXi) via Grant No. FQXi-IAF19-06, the Academy of Finland (Grant No. 312057), the Russian Science Foundation (Grant No. 20-62-46026) and from the European Union Horizon 2020 research and innovation program, under the European Research Council (ERC) (Grant No. 742559). We acknowledge the provision of facilities by Micronova Nanofabrication Centre and OtaNano—the Low Temperature Laboratory of Aalto University to perform this research. We thank the VTT Technical Research Center for sputtered films. Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

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AU - Pekola, Jukka P.

N1 - | openaire: EC/H2020/742559/EU//SQH Funding Information: We acknowledge Dr. Joonas Peltonen, Dr. Dmitry Golubev, Dr. George Thomas, Dr. Neill Lambert, and Ilari Mäkinen for technical support and insightful discussions. This work is financially supported through the Foundational Questions Institute Fund (FQXi) via Grant No. FQXi-IAF19-06, the Academy of Finland (Grant No. 312057), the Russian Science Foundation (Grant No. 20-62-46026) and from the European Union Horizon 2020 research and innovation program, under the European Research Council (ERC) (Grant No. 742559). We acknowledge the provision of facilities by Micronova Nanofabrication Centre and OtaNano—the Low Temperature Laboratory of Aalto University to perform this research. We thank the VTT Technical Research Center for sputtered films. Publisher Copyright: © 2022 American Physical Society.

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Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator

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SQH: Superconducting quantum heat engines and refrigerators

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OtaNano – Low Temperature Laboratory

OtaNano - Nanofab

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Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator

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SQH: Superconducting quantum heat engines and refrigerators

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OtaNano

OtaNano – Low Temperature Laboratory

OtaNano - Nanofab

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