Spontaneous Emission in the presence of Quantum Mirrors

• URL: http://arxiv.org/abs/2402.10303v1
• Date: Thu, 15 Feb 2024 20:09:22 GMT
• Title: Spontaneous Emission in the presence of Quantum Mirrors
• Authors: Kanu Sinha, Jennifer Parra-Contreras, Annyun Das, and Pablo Solano
• Abstract summary: Arrays of atoms coupled to waveguides can behave as mirrors. We analyze the spontaneous emission of an excited two-level atom in the presence of such a quantum mirror.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Arrays of atoms coupled to waveguides can behave as mirrors. We consider an array of $\Lambda$-type three-level atoms wherein preparing the atoms in one ground state or another leads to reflection or transmission of the guided electromagnetic field; a superposition of the two ground states thus corresponds to a coherent superposition of mirror-like and transparent boundary conditions. We analyze the spontaneous emission of an excited two-level atom in the presence of such a quantum mirror, and inside a cavity formed by quantum mirrors, demonstrating that the resulting dynamics of the excited atom can exhibit exotic features, e.g., a superposition of Rabi cycle and exponential decay. Our results pave the way for exploring quantum electrodynamics (QED) phenomena in a paradigm wherein boundary conditions can exhibit quantum superpositions and correlations.

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