Collective Microwave Response for Multiple Gate-Defined Double Quantum Dots

Ting Lin; Si Si Gu; Yong Qiang Xu; Shun Li Jiang; Shu Kun Ye; Bao Chuan Wang; Hai Ou Li; Guang Can Guo; Chang Ling Zou; Xuedong Hu; Gang Cao; Guo Ping Guo

doi:10.1021/acs.nanolett.3c00036

Collective Microwave Response for Multiple Gate-Defined Double Quantum Dots

Ting Lin
, Si Si Gu
, Yong Qiang Xu
, Shun Li Jiang
, Shu Kun Ye
, Bao Chuan Wang
, Hai Ou Li
, Guang Can Guo
, Chang Ling Zou
, Xuedong Hu
, Gang Cao
, Guo Ping Guo

Physics

University at Buffalo

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

7 Scopus citations

Abstract

We fabricate and characterize a hybrid quantum device that consists of five gate-defined double quantum dots (DQDs) and a high-impedance NbTiN transmission resonator. The controllable interactions between DQDs and the resonator are spectroscopically explored by measuring the microwave transmission through the resonator in the detuning parameter space. Utilizing the high tunability of the system parameters and the high cooperativity (C_total> 17.6) interaction between the qubit ensemble and the resonator, we tune the charge-photon coupling and observe the collective microwave response changing from linear to nonlinear. Our results present the maximum number of DQDs coupled to a resonator and manifest a potential platform for scaling up qubits and studying collective quantum effects in semiconductor-superconductor hybrid cavity quantum electrodynamics systems.

Original language	English
Pages (from-to)	4176-4182
Number of pages	7
Journal	Nano Letters
Volume	23
Issue number	10
DOIs	https://doi.org/10.1021/acs.nanolett.3c00036
State	Published - May 24 2023

Keywords

Semiconductor qubit
circuit quantum electrodynamics (QED)
scalable semiconductor-based circuit QED architectures
semiconductor quantum dot

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10.1021/acs.nanolett.3c00036

Cite this

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title = "Collective Microwave Response for Multiple Gate-Defined Double Quantum Dots",

abstract = "We fabricate and characterize a hybrid quantum device that consists of five gate-defined double quantum dots (DQDs) and a high-impedance NbTiN transmission resonator. The controllable interactions between DQDs and the resonator are spectroscopically explored by measuring the microwave transmission through the resonator in the detuning parameter space. Utilizing the high tunability of the system parameters and the high cooperativity (Ctotal> 17.6) interaction between the qubit ensemble and the resonator, we tune the charge-photon coupling and observe the collective microwave response changing from linear to nonlinear. Our results present the maximum number of DQDs coupled to a resonator and manifest a potential platform for scaling up qubits and studying collective quantum effects in semiconductor-superconductor hybrid cavity quantum electrodynamics systems.",

keywords = "Semiconductor qubit, circuit quantum electrodynamics (QED), scalable semiconductor-based circuit QED architectures, semiconductor quantum dot",

author = "Ting Lin and Gu, \{Si Si\} and Xu, \{Yong Qiang\} and Jiang, \{Shun Li\} and Ye, \{Shu Kun\} and Wang, \{Bao Chuan\} and Li, \{Hai Ou\} and Guo, \{Guang Can\} and Zou, \{Chang Ling\} and Xuedong Hu and Gang Cao and Guo, \{Guo Ping\}",

year = "2023",

month = may,

day = "24",

doi = "10.1021/acs.nanolett.3c00036",

language = "English",

volume = "23",

pages = "4176--4182",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Collective Microwave Response for Multiple Gate-Defined Double Quantum Dots

AU - Lin, Ting

AU - Gu, Si Si

AU - Xu, Yong Qiang

AU - Jiang, Shun Li

AU - Ye, Shu Kun

AU - Wang, Bao Chuan

AU - Li, Hai Ou

AU - Guo, Guang Can

AU - Zou, Chang Ling

AU - Hu, Xuedong

AU - Cao, Gang

AU - Guo, Guo Ping

PY - 2023/5/24

Y1 - 2023/5/24

N2 - We fabricate and characterize a hybrid quantum device that consists of five gate-defined double quantum dots (DQDs) and a high-impedance NbTiN transmission resonator. The controllable interactions between DQDs and the resonator are spectroscopically explored by measuring the microwave transmission through the resonator in the detuning parameter space. Utilizing the high tunability of the system parameters and the high cooperativity (Ctotal> 17.6) interaction between the qubit ensemble and the resonator, we tune the charge-photon coupling and observe the collective microwave response changing from linear to nonlinear. Our results present the maximum number of DQDs coupled to a resonator and manifest a potential platform for scaling up qubits and studying collective quantum effects in semiconductor-superconductor hybrid cavity quantum electrodynamics systems.

AB - We fabricate and characterize a hybrid quantum device that consists of five gate-defined double quantum dots (DQDs) and a high-impedance NbTiN transmission resonator. The controllable interactions between DQDs and the resonator are spectroscopically explored by measuring the microwave transmission through the resonator in the detuning parameter space. Utilizing the high tunability of the system parameters and the high cooperativity (Ctotal> 17.6) interaction between the qubit ensemble and the resonator, we tune the charge-photon coupling and observe the collective microwave response changing from linear to nonlinear. Our results present the maximum number of DQDs coupled to a resonator and manifest a potential platform for scaling up qubits and studying collective quantum effects in semiconductor-superconductor hybrid cavity quantum electrodynamics systems.

KW - Semiconductor qubit

KW - circuit quantum electrodynamics (QED)

KW - scalable semiconductor-based circuit QED architectures

KW - semiconductor quantum dot

UR - https://www.scopus.com/pages/publications/85159559758

U2 - 10.1021/acs.nanolett.3c00036

DO - 10.1021/acs.nanolett.3c00036

M3 - Article

C2 - 37133858

SN - 1530-6984

VL - 23

SP - 4176

EP - 4182

JO - Nano Letters

JF - Nano Letters

IS - 10

ER -

Collective Microwave Response for Multiple Gate-Defined Double Quantum Dots

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Keywords

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