Efficient Characterization of Qudit Logical Gates with Gate Set Tomography Using an Error-Free Virtual Z Gate Model
Year: 2024
Type: article
Abstract: Gate set tomography (GST) characterizes the process matrix of quantum logic gates, along with measurement and state preparation errors in quantum processors. GST typically requires extensive data collection and significant computational resources for model estimation. We propose a more efficient GST approach for qudits, utilizing the qudit Hadamard and virtual Z gates to construct fiducials while assuming virtual Z gates are error-free. Our method reduces the computational costs of estimating characterization results, making GST more practical at scale. We experimentally demonstrate the applicability of this approach on a superconducting transmon qutrit.
Source: Physical Review Letters
Institutions: University of Oxford, National Physical Laboratory
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Awards: G2053997426, G2503488389, UK Quantum Technology Hub: NQIT - Networked Quantum Information Technologies, G3148940082, Utilising novel microwave filtering techniques for improved performance in superconducting quantum devices, Quantum technology capital: QUES2T (Quantum Engineering of Solid-state Technologies), EPSRC Hub in Quantum Computing and Simulation, G8960705998
OpenAlex ID: W4402555649