A passive self-correcting quantum memory in three dimensions

Shankar Balasubramanian; Margarita Davydova; Ting-Chun Lin

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arXiv · 2605.10943

A passive self-correcting quantum memory in three dimensions

Shankar Balasubramanian·Margarita Davydova·Ting-Chun Lin

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Abstract

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 $\mathbb{R}^3$.

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quant-ph cond-mat.str-el cs.IT math-ph math.IT math.MG math.MP

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Shankar Balasubramanian, Margarita Davydova, Ting-Chun Lin. 2026-05-11. A passive self-correcting quantum memory in three dimensions. https://arxiv.org/abs/2605.10943

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