Poster (After Call)

FZJ-2023-05674

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Generalized Belief Propagation Algorithms for Decoding of Surface Codes

Old, J. (Corresponding author)FZJ* ; Rispler, M.FZJ*

2023

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Please use a persistent id in citations: doi:10.34734/FZJ-2023-05674

Abstract: A class of codes which recently received a lot of attention because of their good properties are Quantum Low-Density Parity Check (LDPC) codes. We investigate a Belief Propagation (BP) decoder for such codes and show numerically its success and limitations. We introduce a new, generalized decoder building on region-based free energy approximations. Apart from the original implementation of BP it shows the emergence of a threshold under bit-flip and depolarizing noise for the surface code.

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Contributing Institute(s):

1. Theoretische Nanoelektronik (PGI-2)

Research Program(s):

1. 5221 - Advanced Solid-State Qubits and Qubit Systems (POF4-522) (POF4-522)

Appears in the scientific report 2023

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Database coverage:

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