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
Affiliations
Lian-Chen Han
Department of Modern Physics, School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
Yu Xu
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Jin Lin
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Fu-Sheng Chen
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Shao-Wei Li
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Cheng Guo
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Na Li
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Dong-Dong Li
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Yu-Huai Li
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Ming Gong
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
Sheng-Kai Liao
Department of Modern Physics, School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
Cheng-Zhi Peng
Department of Modern Physics, School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
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.
