Continuous-time noise mitigation in analogue quantum simulation
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 new framework for mitigating noise in analogue quantum simulation, operating in a time-continuous manner. To our knowledge, this is the first protocol that is fully analogue and that achieves exact noise cancellation. Our method requires a small number of ancillary qubits, whose interaction with the systemcombined with classical post-processing of joint measurement datais tailored to cancel the effect of noise. Furthermore, the protocol is Hamiltonian-independent, robust to realistic ancilla noise, and avoids any discretization, preserving the continuous-time nature of the system's dynamics. This work opens a new direction for achieving high-fidelity analogue quantum simulation in the presence of noise.
Cite
@article{arxiv.2601.05952,
title = {Continuous-time noise mitigation in analogue quantum simulation},
author = {Gabriele Bressanini and Yue Ma and Hyukjoon Kwon and M. S. Kim},
journal= {arXiv preprint arXiv:2601.05952},
year = {2026}
}