Quantum dynamics of coupled quasinormal modes and quantum emitters interacting via finite-delay propagating photons
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866910128795549696 |
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| author | Fuchs, Robert Meiners Ren, Juanjuan Franke, Sebastian Hughes, Stephen Richter, Marten |
| author_facet | Fuchs, Robert Meiners Ren, Juanjuan Franke, Sebastian Hughes, Stephen Richter, Marten |
| contents | A time-dependent theory for the interactions between spatially separated lossy cavities in a homogeneous background medium using quantized quasinormal modes (QNMs) is presented. The cavities interact via a bath of traveling photons, described by non-bosonic operators that are orthogonal to the open-cavity QNMs. The retarded (i.e., time-delayed) inter-cavity dynamics are fully described by system-bath correlation functions, in which the emission from one cavity appears as the input field for another. Coupling between quantum emitters (described as two-level systems), placed inside a cavity or embedded in an external medium, and the electromagnetic field (cavity modes and bath photons) is included in the theory, which gives rise to both bath-mediated and QNM-mediated interactions between the emitters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_12605 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Quantum dynamics of coupled quasinormal modes and quantum emitters interacting via finite-delay propagating photons Fuchs, Robert Meiners Ren, Juanjuan Franke, Sebastian Hughes, Stephen Richter, Marten Mesoscale and Nanoscale Physics Optics Quantum Physics A time-dependent theory for the interactions between spatially separated lossy cavities in a homogeneous background medium using quantized quasinormal modes (QNMs) is presented. The cavities interact via a bath of traveling photons, described by non-bosonic operators that are orthogonal to the open-cavity QNMs. The retarded (i.e., time-delayed) inter-cavity dynamics are fully described by system-bath correlation functions, in which the emission from one cavity appears as the input field for another. Coupling between quantum emitters (described as two-level systems), placed inside a cavity or embedded in an external medium, and the electromagnetic field (cavity modes and bath photons) is included in the theory, which gives rise to both bath-mediated and QNM-mediated interactions between the emitters. |
| title | Quantum dynamics of coupled quasinormal modes and quantum emitters interacting via finite-delay propagating photons |
| topic | Mesoscale and Nanoscale Physics Optics Quantum Physics |
| url | https://arxiv.org/abs/2604.12605 |