Universal quantum simulation of single-qubit nonunitary operators using duality quantum algorithm.

ABSTRACT: Quantum information processing enhances human's power to simulate nature in quantum level and solve complex problem efficiently. During the process, a series of operators is performed to evolve the system or undertake a computing task. In recent year, research interest in non-Hermitian quantum systems, dissipative-quantum systems and new quantum algorithms has greatly increased, which nonunitary operators take an important role in. In this work, we utilize the linear combination of unitaries technique for nonunitary dynamics on a single qubit to give explicit decompositions of the necessary unitaries, and simulate arbitrary time-dependent single-qubit nonunitary operator F(t) using duality quantum algorithm. We find that the successful probability is not only decided by F(t) and the initia

SUBMITTER: Zheng C 

PROVIDER: S-EPMC7889913 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature