Continuous-time noise mitigation in analogue quantum simulation
File(s)
Accepted version
Author(s)
Bressanini, Gabriele
Ma, Yue
Hanks, Michael
Kwon, Hyukjoon
Kim, Myungshik
Type
Journal Article
Abstract
Analogue quantum simulators offer a promising route to explore quantum many-body dynamics beyond classical reach in the near term. However, their vulnerability to noise limits the accuracy of simulations. Here, we establish a continuous-time framework for mitigating noise in analogue quantum simulation. Our protocol fully preserves the continuous-time nature by avoiding any active control or measurement of the system during the dynamics, while achieving exact noise cancellation. This requires a small number of ancillary qubits, whose interaction with the system, combined with classical post-processing of joint measurement data, is tailored to cancel the effect of noise. Furthermore, the protocol is Hamiltonian-independent and robust to realistic ancilla noise. This work points to a promising direction for achieving high-fidelity analogue quantum simulation in the presence of noise.
Date Acceptance
2026-09-23
Citation
Nature Communications
ISSN
2041-1723
Publisher
Nature Portfolio
Journal / Book Title
Nature Communications
Copyright Statement
Subject to copyright. This paper is embargoed until publication. Once published the Version of Record (VoR) will be available on immediate open access.
Publication Status
Accepted