期刊
PHYSICAL REVIEW LETTERS
卷 126, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.153603
关键词
-
资金
- Japan Society for the Promotion of Science [JP19K23424]
- Harvard-MIT CUA, AFOSR-MURI Photonic Quantum Matter [FA95501610323]
- ARO grant Control of Many-Body States Using Strong Coherent Light-Matter Coupling in Terahertz Cavities
- NSF EAGER-QAC-QSA Grant [2038011]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [2038011] Funding Source: National Science Foundation
This study proposes a nonperturbative approach to analyze correlations in quantum light-matter systems at strong coupling, achieving decoupling of light and matter degrees of freedom through a unitary transformation. It demonstrates the versatility of the method by applying it to specific models and discusses a generalization to spatially varying electromagnetic modes.
Quantum light-matter systems at strong coupling are notoriously challenging to analyze due to the need to include states with many excitations in every coupled mode. We propose a nonperturbative approach to analyze light-matter correlations at all interaction strengths. The key element of our approach is a unitary transformation that achieves asymptotic decoupling of light and matter degrees of freedom in the limit where light-matter interaction becomes the dominant energy scale. In the transformed frame, truncation of the matter or photon Hilbert space is increasingly well justified at larger coupling, enabling one to systematically derive low-energy effective models, such as tight-binding Hamiltonians. We demonstrate the versatility of our approach by applying it to concrete models relevant to electrons in crystal potential and electric dipoles interacting with a cavity mode. A generalization to the case of spatially varying electromagnetic modes is also discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据