Canceling microwave crosstalk with fixed-frequency qubits

Nuerbolati，Wuerkaixi1; Han，Zhikun2,3,4; Chu，Ji2,3,4; Zhou，Yuxuan2,3,4; Tan，Xinsheng1; Yu，Yang1; Liu，Song2,3,4; Yan，Fei2,3,4

2022-04-25

10.1063/5.0088094

APPLIED PHYSICS LETTERS   影响因子和分区

0003-6951

1077-3118

Scalable quantum information processing requires that modular gate operations can be executed in parallel. The presence of crosstalk decreases the individual addressability, causing erroneous results during simultaneous operations. For superconducting qubits which operate in the microwave regime, electromagnetic isolation is often limited due to design constraints, leading to signal crosstalk that can deteriorate the quality of simultaneous gate operations. Here, we propose and demonstrate a method based on the alternative-current Stark effect for calibrating the microwave signal crosstalk. The method is suitable for processors based on fixed-frequency qubits, which are known for high coherence and simple control. The optimal compensation parameters can be reliably identified from a well-defined interference pattern. We implement the method on an array of seven superconducting qubits and show its effectiveness in removing the majority of crosstalk errors.

SCI ; EI

英语

NI论文

通讯

Key-Area Research and Development Program of Guang-Dong Province[2018B030326001] ; National Natural Science Foundation of China (NSFC)[U1801661] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06D348] ; Guangdong Provincial Key Laboratory[2019B121203002] ; Natural Science Foundation (NSF) of Guangdong Province[2017B030308003] ; Science, Technology and Innovation Commission of Shenzhen Municipality[KYTDPT20181011104202253] ; Shenzhen-Hong Kong Cooperation Zone for Technology and Innovation[HZQB-KCZYB-2020050] ; NSF of Beijing[Z190012] ; NSFC[61521001,12074179,11890704] ; NSF of Jiangsu Province[2021102024]

Physics

Physics, Applied

WOS:000793154400015

AIP Publishing

20221912098462

Quantum optics ; Qubits

Light, Optics and Optical Devices:741 ; Light/Optics:741.1 ; Nanotechnology:761 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

2-s2.0-85129728347

Scopus

1.National Laboratory of Solid State Microstructures,School of Physics,Nanjing University,Nanjing,210093,China
2.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,China
3.International Quantum Academy,Shenzhen,Guangdong,China
4.Guangdong Provincial Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,China

Nuerbolati，Wuerkaixi,Han，Zhikun,Chu，Ji,et al. Canceling microwave crosstalk with fixed-frequency qubits[J]. APPLIED PHYSICS LETTERS,2022,120(17).

Nuerbolati，Wuerkaixi.,Han，Zhikun.,Chu，Ji.,Zhou，Yuxuan.,Tan，Xinsheng.,...&Yan，Fei.(2022).Canceling microwave crosstalk with fixed-frequency qubits.APPLIED PHYSICS LETTERS,120(17).

Nuerbolati，Wuerkaixi,et al."Canceling microwave crosstalk with fixed-frequency qubits".APPLIED PHYSICS LETTERS 120.17(2022).