Shuyue Wang, Wuji Zhang, Chunfang Sun, Chunfeng Wu, Gangcheng Wang
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引用次数: 0
摘要
在这项研究中,我们利用光子介导的 Dzyaloshinskii-Moriya 相互作用的 z 分量来模拟基于量子场和经典场驱动的三水平原子的基态手性激发。我们采用绝热消除技术推导出了基态流形中两级系统的有效 Dzyaloshinskii-Moriya 相互作用哈密顿,通过实施周期调制,可以确保实现所需的动力学。同时,通过选择适当的驱动频率和相位,可以获得三态和多态手性激发。数值模拟结果清楚地表明,我们的方案可以产生相对完美的三态手性激励和相对可靠的多态手性激励。此外,我们还详细讨论了不利因素对手性电流的影响,潜在的实验可行性进一步表明我们的结果为量子态转移和未来量子网络提供了可能。
Ground-state chiral excitation via periodic modulation
In this study we engineer the component of the Dzyaloshinskii-Moriya interaction mediated by photons to emulate ground-state chiral excitation based on three-level atoms driven by quantum and classical fields. We employ adiabatic elimination techniques to derive an effective Dzyaloshinskii-Moriya interaction Hamiltonian of two-level systems in the ground-state manifold, which can ensure the desired dynamics is achieved through the implementation of periodic modulation. Meanwhile, three-state and multistate chiral excitation can be obtained by choosing appropriate driving frequencies and phases. The numerical simulation results clearly indicate that our proposal can generate the comparatively perfect three-state chiral excitation and relatively reliable multistate chiral excitation. Moreover, the influence of unfavorable factors on the chiral current is discussed in detail, and the potential experimental feasibility further shows that our results provide possibilities for quantum state transfer and future quantum networks.
期刊介绍:
Physical Review A (PRA) publishes important developments in the rapidly evolving areas of atomic, molecular, and optical (AMO) physics, quantum information, and related fundamental concepts.
PRA covers atomic, molecular, and optical physics, foundations of quantum mechanics, and quantum information, including:
-Fundamental concepts
-Quantum information
-Atomic and molecular structure and dynamics; high-precision measurement
-Atomic and molecular collisions and interactions
-Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
-Matter waves and collective properties of cold atoms and molecules
-Quantum optics, physics of lasers, nonlinear optics, and classical optics