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- W4283692287 abstract "Noise is ubiquitous in real quantum systems, leading to non-Hermitian quantum dynamics, and may affect the fundamental states of matter. Here we report in experiment a quantum simulation of the two-dimensional non-Hermitian quantum anomalous Hall (QAH) model using the nuclear magnetic resonance processor. Unlike the usual experiments using auxiliary qubits, we develop a stochastic average approach based on the stochastic Schrodinger equation to realize the non-Hermitian dissipative quantum dynamics, which has advantages in saving the quantum simulation sources and simplifies implementation of quantum gates. We demonstrate the stability of dynamical topology against weak noise, and observe two types of dynamical topological transitions driven by strong noise. Moreover, a region that the emergent topology is always robust regardless of the noise strength is observed. Our work shows a feasible quantum simulation approach for dissipative quantum dynamics with stochastic Schrodinger equation and opens a route to investigate non-Hermitian dynamical topological physics." @default.
- W4283692287 created "2022-06-30" @default.
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- W4283692287 date "2022-06-29" @default.
- W4283692287 modified "2023-10-06" @default.
- W4283692287 title "Experimental quantum simulation of non-Hermitian dynamical topological states using stochastic Schrödinger equation" @default.
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- W4283692287 doi "https://doi.org/10.1038/s41534-022-00587-3" @default.
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