Sam J. Griffiths

collaborators

3 papers

quant-ph2026

The limits of erasure-based postselection for quantum error mitigation

Sam J. Griffiths, Jamie Friel, Brian Vlastakis

In both classical and quantum error correction, heralded erasures are known to be easier to tolerate than unheralded general stochastic errors. Whilst an established benefit of los…

math.NT2026

Elementary local representation densities at all primes via lifting recursions

Samuel Griffiths

Let $p$ be a prime and let $L$ be a quadratic $Z_{p}$ -lattice with quadratic form $Q$ . For $t \neq = 0$ the local representation density $I^\pm_{p} (t; L)$ is the stable normalised gr…

quant-ph2025

Online Gaussian elimination for quantum LDPC decoding

Sam J. Griffiths, Asmae Benhemou, Dan E. Browne

Decoders for quantum LDPC codes generally rely on solving a parity-check equation with Gaussian elimination, with the generalised union-find decoder performing this repeatedly on g…