journal article·2023-09-01Open access

Active reset of superconducting qubits using the electronics based on RF switches

Lian-Chen Han, Yu Xu, Jin Lin, Fu-Sheng Chen, Shao-Wei Li, Cheng Guo, Na Li, Dong-Dong Li, Yu-Huai Li, Ming Gong, Sheng-Kai Liao, Cheng-Zhi Peng

AIP Advances· Volume 13· Issue 9

Abstract

Active reset of qubits is a crucial step in achieving quantum algorithms, particularly in fault-tolerant quantum computing, as it allows qubits to be quickly initialized to the ground state. In this paper, we demonstrate active reset of superconducting qubits using the feedback electronics based on RF switches. We are able to reset the qubit to the ground state in 11.412 µs with a success rate of 99.82%, which is better than the natural relaxation method in terms of both time consumption (180 µs) and success rate (99.61%). The demonstrated method facilitates fast and high-fidelity qubit initialization, holding practical significance for large-scale quantum computation.
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Research context

OpenAlex topics: Quantum Computing Algorithms and Architecture · Quantum Information and Cryptography · Quantum and electron transport phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Modern Physics, School of Physical Sciences, University of Science and Technology of China 1 , Hefei 230026, China

Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China 2 , Shanghai 201315, China

Hefei National Laboratory, University of Science and Technology of China 3 , Hefei 230088, China

School of Cyber Science and Technology, University of Science and Technology of China 4 , Hefei 230026, China

QuantumCTek Co., Ltd. 5 , Hefei 230088, China

Funding

Shanghai Municipal Science and Technology Major Project · Anhui Provincial Natural Science Foundation · Youth Innovation Promotion Association · Sponsored by Shanghai Sailing Program · China Postdoctoral Science Foundation · Innovation Program for Quantum Science and Technology

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