Pruning qLDPC codes: Towards bivariate bicycle codes with open boundary conditions

Fuente: arXiv
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Auteurs principaux: Eberhardt, Jens Niklas, Pereira, Francisco Revson F., Steffan, Vincent
Format: Preprint
Publié: 2024
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author Eberhardt, Jens Niklas
Pereira, Francisco Revson F.
Steffan, Vincent
author_facet Eberhardt, Jens Niklas
Pereira, Francisco Revson F.
Steffan, Vincent
contents Quantum low-density parity-check codes are promising candidates for quantum error correcting codes as they might offer more resource-efficient alternatives to surface code architectures. In particular, bivariate bicycle codes have recently gained attention due to their 2D-local structure, high encoding rate, and promising performance under simulation. In this work, we will explore how one can transform bivariate bicycle codes defined on lattices with periodic boundary conditions to codes with the same locality properties on a 2D lattice with open boundary conditions. For this, we introduce the concept of pruning quantum codes. We explain how pruning bivariate bicycle codes is always possible when the codes are hypergraph products of two classical cyclic codes. We also indicate that this might be possible for more general bivariate bicycle codes by constructing explicit examples. Finally, we investigate fault-tolerant quantum computation using the constructed pruned codes by describing fold-transversal gates.
format Preprint
id arxiv_https___arxiv_org_abs_2412_04181
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Pruning qLDPC codes: Towards bivariate bicycle codes with open boundary conditions
Eberhardt, Jens Niklas
Pereira, Francisco Revson F.
Steffan, Vincent
Quantum Physics
Quantum low-density parity-check codes are promising candidates for quantum error correcting codes as they might offer more resource-efficient alternatives to surface code architectures. In particular, bivariate bicycle codes have recently gained attention due to their 2D-local structure, high encoding rate, and promising performance under simulation. In this work, we will explore how one can transform bivariate bicycle codes defined on lattices with periodic boundary conditions to codes with the same locality properties on a 2D lattice with open boundary conditions. For this, we introduce the concept of pruning quantum codes. We explain how pruning bivariate bicycle codes is always possible when the codes are hypergraph products of two classical cyclic codes. We also indicate that this might be possible for more general bivariate bicycle codes by constructing explicit examples. Finally, we investigate fault-tolerant quantum computation using the constructed pruned codes by describing fold-transversal gates.
title Pruning qLDPC codes: Towards bivariate bicycle codes with open boundary conditions
topic Quantum Physics
url https://arxiv.org/abs/2412.04181