Digital Simulation of Topological Matter on Programmable Quantum Processors

• URL: http://arxiv.org/abs/2003.06086v2
• Date: Wed, 23 Sep 2020 16:02:56 GMT
• Title: Digital Simulation of Topological Matter on Programmable Quantum Processors
• Authors: Feng Mei, Qihao Guo, Ya-Fei Yu, Liantuan Xiao, Shi-Liang Zhu, and Suotang Jia
• Abstract summary: We propose and demonstrate an approach to design topologically protected quantum circuits on the current generation of noisy quantum processors. In particular, a low-depth topological quantum circuit is performed on both IBM and Rigetti quantum processors.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Simulating the topological phases of matter in synthetic quantum simulators is a topic of considerable interest. Given the universality of digital quantum simulators, the prospect of digitally simulating exotic topological phases is greatly enhanced. However, it is still an open question how to realize digital quantum simulation of topological phases of matter. Here, using common single- and two-qubit elementary quantum gates, we propose and demonstrate an approach to design topologically protected quantum circuits on the current generation of noisy quantum processors where spin-orbital coupling and related topological matter can be digitally simulated. In particular, a low-depth topological quantum circuit is performed on both IBM and Rigetti quantum processors. In the experiments, we not only observe but also distinguish the 0 and $\pi$ energy topological edge states by measuring qubit excitation distribution at the output of the circuits.

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