arxiv5/20/2026, 2:38:03 AM
Quantum Rejection Sampling Achieves Quadratic Speedup for Discrete Gaussian Sampling on LatticesA new quantum algorithm for Discrete Gaussian Sampling (DGS) on lattices achieves asymptotically quadratic speedup over the best classical algorithm (Wang & Ling, 2019) using quantum rejection sampling. The sampler outputs a quantum state usable both as a measurement-ready sample…