Full control of superconducting qubits with combined on-chip microwave and flux lines
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 04, 2021
- Source ID
- 10.1063/5.0065517
Entities
People
- Andrew Bestwick
- Angela Q. Chen
- Eyob A. Sete
- Feyza Oruc
- Jen-hao Yeh
- Keith Jackson
- Mark Field
- Riccardo Manenti
- Shobhan Kulshreshtha
- Stefano Poletto
Organizations
- Defense Advanced Research Projects Agency
- Rigetti Computing