Speaker
Description
Simulating open quantum systems is computationally challenging, particularly in the non-Markovian regime, where the system’s evolution depends on its history. Due to this computational cost, classical approaches for modelling such dynamics are limited to small systems or simple models. Quantum computing offers a promising route for overcoming these limitations; however, existing methods for non-Markovian simulation have been restricted to spin dynamics. Here, we show that non-Markovian bosonic dynamics can also be simulated, using hybrid continuous-variable-discrete-variable (CV-DV) quantum simulators. Our approach combines pseudomodes with stochastic fluctuations. The pseudomodes, implemented physically, simulate the strongly structured environmental features that give rise to non-Markovian effects, while the stochastic fluctuations capture weak or broad spectral components for which a fully quantum representation is unnecessary. We describe how the resulting dynamics can be realised in a trapped-ion architecture, including the engineering of the required system-bath couplings, and show that stochastic fluctuations can reduce the number of pseudomodes required for accurate simulations. Our results establish hybrid CV-DV platforms as a flexible and resource-efficient route to simulating non-Markovian dynamics in classically intractable regimes.
| I am the presenting author | Yes |
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