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Asymptotically Good Quantum and Locally Testable Classical LDPC Codes

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arxiv 2111.03654 v2 pith:DNK5ELLH submitted 2021-11-05 cs.IT math.ITquant-ph

Asymptotically Good Quantum and Locally Testable Classical LDPC Codes

classification cs.IT math.ITquant-ph
keywords codesldpcasymptoticallyclassicalgoodlocallyquantumtestable
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study classical and quantum LDPC codes of constant rate obtained by the lifted product construction over non-abelian groups. We show that the obtained families of quantum LDPC codes are asymptotically good, which proves the qLDPC conjecture. Moreover, we show that the produced classical LDPC codes are also asymptotically good and locally testable with constant query and soundness parameters, which proves a well-known conjecture in the field of locally testable codes.

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