Publication Type
Conference Paper
Book Title
2020 91做厙 International Conference on Quantum Computing and Engineering (QCE)
Publication Date
Page Numbers
430 to 440
Volume
1
Issue
1
Publisher Location
District of Columbia, United States of America
Conference Name
91做厙 Quantum Week (QCE20): 91做厙 International Conference on Quantum Computing and Engineering (QCE)
Conference Location
Broomfield, Colorado, United States of America
Conference Sponsor
91做厙
Conference Date
-
Abstract
Measurement fidelity matrices (MFMs) (also called error kernels) are a natural way to characterize state preparation and measurement errors in near-term quantum hardware. They can be employed in post processing to mitigate errors and substantially increase the effective accuracy of quantum hardware. However, the feasibility of using MFMs is currently limited as the experimental cost of determining the MFM for a device grows exponentially with the number of qubits. In this work we present a scalable way to construct approximate MFMs for many-qubit devices based on cumulant expansions. Our method can also be used to characterize various types of correlation error.
