As the field of quantum computing progresses to larger-scale devices, multiplexing will be crucial to scale quantum processors. While multiplexed readout is common practice for superconducting devices, relatively little work has been reported about the combination of flux and microwave control lines. Here, we present a method to integrate a microwave line and a flux line into a single “XYZ line.” This combined control line allows us to perform fast single-qubit gates as well as to deliver flux signals to the qubits. The measured relaxation times of the qubits are comparable to state-of-the-art devices employing separate control lines. We benchmark the fidelity of single-qubit gates with randomized benchmarking, achieving a fidelity as high as 99.93±0.04%, and we demonstrate that XYZ lines can in principle be used to run parametric entangling gates.
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4 October 2021
Research Article|
October 04 2021
Full control of superconducting qubits with combined on-chip microwave and flux lines
Special Collection:
Emerging Qubit Systems - Novel Materials, Encodings and Architectures
Riccardo Manenti
;
Riccardo Manenti
a)
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
a)Author to whom correspondence should be addressed: [email protected]
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Eyob A. Sete;
Eyob A. Sete
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Angela Q. Chen;
Angela Q. Chen
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Shobhan Kulshreshtha;
Shobhan Kulshreshtha
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Jen-Hao Yeh;
Jen-Hao Yeh
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Feyza Oruc;
Feyza Oruc
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Andrew Bestwick;
Andrew Bestwick
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Mark Field;
Mark Field
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Keith Jackson;
Keith Jackson
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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Stefano Poletto
Stefano Poletto
Rigetti Computing
, 775 Heinz Avenue, Berkeley, California 94710, USA
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a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the APL Special Collection on Emerging Qubit Systems - Novel Materials, Encodings and Architectures.
Appl. Phys. Lett. 119, 144001 (2021)
Article history
Received:
August 02 2021
Accepted:
September 18 2021
Citation
Riccardo Manenti, Eyob A. Sete, Angela Q. Chen, Shobhan Kulshreshtha, Jen-Hao Yeh, Feyza Oruc, Andrew Bestwick, Mark Field, Keith Jackson, Stefano Poletto; Full control of superconducting qubits with combined on-chip microwave and flux lines. Appl. Phys. Lett. 4 October 2021; 119 (14): 144001. https://doi.org/10.1063/5.0065517
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