Brief Review: Simulation of Novel Systems Using Duality Quantum Algorithm

Chao Zheng*

Department of Physics, College of Science, North China University of Technology, No. 5 Jinyuanzhuang Road, Beijing, 100144, China

DOI: 10.5185/amlett.2019.9908

Publication Date (Web): Mar 01, 2019

E-mail: czheng@ncut.edu.cn

Abstract

In this article, we review the recent works of quantum simulation of novel systems briefly, the parity-time-reversal-symmetric (PT-symmetric) quantum system and the Yang-Baxter-equation (YBE) system, using duality quantum algorithm. Duality quantum algorithm studies the linear combinations of unitary operators, making it possible to simulate non-unitary evolutions of novel quantum systems. A PT-symmetric quantum system is a typical non-Hermitian system of which the evolution is not unitary and cannot be simulated directly by a conventional quantum computer. A recent work by C. Zheng has established a theory to simulate a general PT-symmetric two level system by duality quantum computing. The other typical example is the YBE quantum systems, of which the evolutions can be both unitary and non-unitary. C. Zheng and S. J. Wei described a theory that the two hand sides of the YBE can be simulated efficiently by the duality quantum algorithm in their recent research. Perspectives of future applications are expected at last. 

Keywords

Quantum simulation, duality quantum algorithm, PT-symmetry, Yang-Baxter equation.

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