A passive self-correcting quantum memory in three dimensions

We construct a 3D Pauli stabilizer Hamiltonian whose ground state space can encode a qubit for exponential time when coupled to a bath at non-zero temperature. Our construction recursively applies a sequence of transformations to a seed Hamiltonian that increases the memory lifetime of the encoded qubit while maintaining geometric locality in $\mathbb{R}^3$. --- Source: arXiv:2605.10943v1 - http://arxiv.org/abs/2605.10943v1 PDF: https://arxiv.org/pdf/2605.10943v1 Original Link: http://arxiv.org/...