Related papers: Multimer states in multilevel waveguide QED

Multimer states in multilevel waveguide QED

URL: http://arxiv.org/abs/2406.12390v1
Date: Tue, 18 Jun 2024 08:27:41 GMT
Title: Multimer states in multilevel waveguide QED
Authors: Jiaming Shi, Alexander N. Poddubny,
Abstract summary: We study theoretically the interplay of spontaneous emission and interactions for quasistationary eigenstates in a finite periodic array of multilevel atoms coupled to the waveguide. Our calculations reveal the peculiar multimerization effect driven by the anharmonicity of the atomic potential.
Score: 49.1574468325115
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We study theoretically the interplay of spontaneous emission and interactions for the multiple-excited quasistationary eigenstates in a finite periodic array of multilevel atoms coupled to the waveguide. We develop an analytical approach to calculate such eigenstates based on the subradiant dimer basis. Our calculations reveal the peculiar multimerization effect driven by the anharmonicity of the atomic potential: while a general eigenstate is an entangled one, there exist eigenstates that are products of dimers, trimers, or tetramers, depending on the size of the system and the fill factor. At half-filling, these product states acquire a periodic structure with all-to-all connections inside each multimer and become the most subradiant ones.

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