Validation of Attaining a Higher Threshold Using Double-Pass MWPM Decoding of CSS Codes Using X/Z Correlations

dc.contributor.advisor	Brown, Kenneth R
dc.contributor.author	Pendse, Ruchi Anant
dc.date.accessioned	2023-06-08T18:35:03Z
dc.date.available	2023-06-08T18:35:03Z
dc.date.issued	2023
dc.department	Electrical and Computer Engineering
dc.description.abstract	In this report we validate that Minimum Weight Perfect Matching (MWPM) decoding ofa surface code helps attain a higher code threshold than standard decoding by taking into account the correlations of errors that occur on the lattice. Correlated decoding cannot be directly performed using MWPM due to the presence of hyperedges in the graph. Decomposing correlated errors into simultaneous X and Z excitations, along with considering an asymmetric code for optimal performance of this scheme, yields a codecapacity threshold of 15% for standard depolarizing error by updating the weights of one decoding graph based on the corrections of another.
dc.identifier.uri	https://hdl.handle.net/10161/27891
dc.subject	Electrical engineering
dc.subject	Computer engineering
dc.subject	Quantum physics
dc.subject	CSS codes
dc.subject	Decoding
dc.subject	MWPM
dc.subject	Quantum Error Correction
dc.title	Validation of Attaining a Higher Threshold Using Double-Pass MWPM Decoding of CSS Codes Using X/Z Correlations
dc.type	Master's thesis

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