Continuous-time noise mitigation in analogue quantum simulation

• URL: http://arxiv.org/abs/2601.05952v1
• Date: Fri, 09 Jan 2026 17:13:03 GMT
• Title: Continuous-time noise mitigation in analogue quantum simulation
• Authors: Gabriele Bressanini, Yue Ma, Hyukjoon Kwon, M. S. Kim,
• Abstract summary: We establish a new framework for mitigating noise in analogue quantum simulation.<n>This is the first protocol that is fully analogue and achieves exact noise cancellation.<n>This work opens a new direction for achieving high-fidelity analogue quantum simulation in the presence of noise.
• Score: 5.881163673062229
• License: http://creativecommons.org/licenses/by/4.0/
• 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 system$-$combined with classical post-processing of joint measurement data$-$is 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.

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