QUANTUM CIRCUIT FOR ESTIMATING MATRIX SPECTRAL SUMS

Systems and methods for operating a quantum system are described. A controller of a quantum system can generate a command signal. The quantum system can include quantum hardware having a plurality of qubits. An interface of the quantum system can control the quantum hardware based on the command sig...

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Bibliographic Details
Main Authors Clarkson, Kenneth Lee, Kalantzis, Vasileios, Horesh, Lior, Ubaru, Shashanka, Akhalwaya, Ismail Yunus, Squillante, Mark S
Format Patent
LanguageEnglish
Published 18.01.2024
Subjects
CALCULATING
COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:Systems and methods for operating a quantum system are described. A controller of a quantum system can generate a command signal. The quantum system can include quantum hardware having a plurality of qubits. An interface of the quantum system can control the quantum hardware based on the command signal received from the controller to determine a plurality of moments of a matrix using a random state vector represented by the plurality of qubits. The controller can be further configured to output the plurality of moments of the matrix to a computing device to estimate a trace of a matrix function based on one or more selected moments among the plurality of moments. The matrix function can be a function of the matrix.
Bibliography:Application Number: US202217863554