闭环三能级系统中与空间相关的电磁诱导透明
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宁夏师范大学

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Spatially Dependent Electromagnetically Induced Transparency in a Closed-Loop Three-Level System
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Ningxia Normal University

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    摘要:

    本文提出一种基于微波场辅助耦合构建的闭环三能级系统,并运用密度矩阵方程研究拉盖尔—高斯光束与微波场耦合作用下的空间相关电磁诱导透明效应。研究结果表明,非涡旋探测光的吸收响应可由控制光的轨道角动量、单光子失谐、相对相位和径向节点数等参量调制:调节轨道角动量可实现明暗环状吸收分布调控,单光子失谐量调节可引导结构由环形向花瓣形过渡,控制相对相位则可实现吸收分布的空间旋转操控,而径向节点数的变化会引起吸收分布由中心对称向多环与角向对称结构演化,这些空间调控手段共同实现了对空间电磁诱导透明效应的精确操控。该研究为空间结构可控的量子信息处理提供了新思路,并拓展了其在量子通信与计算中的潜在应用路径。

    Abstract:

    In this paper, we propose a closed-loop three-energy-level system constructed based on microwave-field-assisted coupling, and use the density matrix equation to study the spatially correlated electromagnetically induced transparency effect under the coupling of a Laguerre-Gaussian beam with a microwave field. The results show that the absorption response of non-vortex-detected light can be modulated by controlling the optical orbital angular momentum, single-photon detuning, relative phase, and number of radial nodes: the modulation of the orbital angular momentum realizes the modulation of the absorption distribution of the bright-dark ring, the modulation of the single-photon detuning guides the transition of the structure from the ring to the petal, the control of the relative phase realizes the spatial rotational manipulation of the absorption distribution, and the variation of the number of radial nodes induces the evolution of the absorption distribution from centrosymmetric to multi-ring and angular symmetric structures. Together, these spatial modulation tools realize the precise manipulation of the spatially electromagnetic-induced transparency effect. This study provides a new idea for quantum information processing with controllable spatial structure and expands its potential application path in quantum communication and computation.

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  • 收稿日期:2025-03-30
  • 最后修改日期:2025-06-11
  • 录用日期:2025-06-19
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