Exact Non-Markovian Quantum Dynamics on the NISQ Device Using Kraus Operators
Exact Non-Markovian Quantum Dynamics on the NISQ Device Using Kraus Operators
复制标题
使用 Kraus 算子在 NISQ 设备上实现精确的非马尔可夫量子动力学
DOI:
10.1021/acsomega.3c09720
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发表时间:
2024
期刊:
影响因子:
4.1
通讯作者:
Wang, Fei
中科院分区:
文献类型:
--
作者:
Seneviratne, Avin;Walters, Peter L.;Wang, Fei
The theory of open quantum systems has many applications ranging from simulating quantum dynamics in condensed phases to better understanding quantum-enabled technologies. At the center of theoretical chemistry are the developments of methodologies and computational tools for simulating charge and excitation energy transfer in solutions, biomolecules, and molecular aggregates. As a variety of these processes display non-Markovian behavior, classical computer simulation can be challenging due to exponential scaling with existing methods. With quantum computers holding the promise of efficient quantum simulations, in this paper, we present a new quantum algorithm based on Kraus operators that capture the exact non-Markovian effect at a finite temperature. The implementation of the Kraus operators on the quantum machine uses a combination of singular value decomposition (SVD) and optimal Walsh operators that result in shallow circuits. We demonstrate the feasibility of the algorithm by simulating the spin-boson dynamics and the exciton transfer in the Fenna–Matthews–Olson (FMO) complex. The NISQ results show very good agreement with the exact ones.
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