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Start Over Author "Yu Ang" Publisher springer science and business media llc
12 results on '"Yu Ang"'

5. Experimental quantum simulation of non-Hermitian dynamical topological states using stochastic Schrödinger equation

Author

Zidong Lin, Lin Zhang, Xinyue Long, Yu-ang Fan, Yishan Li, Kai Tang, Jun Li, XinFang Nie, Tao Xin, Xiong-Jun Liu, and Dawei Lu

Subjects
Quantum Physics, Computational Theory and Mathematics, Computer Networks and Communications, Computer Science (miscellaneous), FOS: Physical sciences, Statistical and Nonlinear Physics, Quantum Physics (quant-ph)
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 an 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 Schrödinger equation to realize the non-Hermitian dissipative quantum dynamics, which has advantages in saving the quantum simulation sources and simplifying the 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 where 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 Schrödinger equation and opens a route to investigate non-Hermitian dynamical topological physics.

Published
2022

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