Study of nonequilibrium dynamics in higher dimensional and higher spin systems in Rydberg atoms

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K14389
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
• Research Institution: Tokyo University of Science (2022); Institute for Molecular Science (2020-2021)
• Principal Investigator: Kunimi Masaya 東京理科大学, 理学部第一部物理学科, 助教 (00844820)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: Rydberg原子 / 量子シミュレーター / 冷却原子 / 量子スピン系 / 非平衡ダイナミクス

Outline of Final Research Achievements

In this research project, we have done theoretical studies on quantum simulators using Rydberg atoms, which have attracted much attention in recent years and non-equilibrium dynamics in the cold atoms. First, we have evaluated the performance of approximation methods for quantum spin systems with Rydberg atoms, and applied them to actual experimental systems. Then, we have analyzed the properties of the nonergodic dynamics of one-dimensional Bose gases in optical lattices. Moreover, we have proposed a method to realize a quantum spin system with Dzyaloshinskii-Moriya type interaction in Rydberg atoms.

Free Research Field

原子分子光物理、物性物理、統計物理

Academic Significance and Societal Importance of the Research Achievements

今後も発展が予想されるRydberg原子を用いた量子シミュレーターで観測が期待される非平衡現象の研究や、いままで実現していなかったDzyaloshinskii-Moriya型の相互作用系を実験的に作成するための提案を行なった。特に後者は量子カイラル磁性体という固体系では簡単に研究できない領域へアプローチできるため学術的に意義が大きい。本研究により量子カイラル磁性の量子シミュレーションという新しい可能性を開けたと考えている。