Purified pseudomode model for nonlinear system-bath interactions
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866918230578167808 |
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| author | Zhang, Cheng Lambert, Neill Li, Xin-Qi Cirio, Mauro Liang, Pengfei |
| author_facet | Zhang, Cheng Lambert, Neill Li, Xin-Qi Cirio, Mauro Liang, Pengfei |
| contents | The theory of purified pseudomodes [arXiv:2412.04264 (2024)] was recently developed to provide a numerical tool for the analysis of the properties of a quantum system and the environment it couples to via linear system-bath interactions. Here we extend this theory to allow for the description of general nonlinear system-bath interactions. We demonstrate the validity of our method by considering the spontaneous decay of a two-level atom placed inside a single-mode lossy cavity and furthermore, its potential application to nanophotonics by calculating the resonance fluorescence spectrum of a quantum dot in the presence of a phonon environment. Our method provides a useful tool for the study of phonon-assisted emission in quantum dots and holds the the promise for broad applications in fields like quantum biology, nonlinear phononics, and nanophotonics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_18707 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Purified pseudomode model for nonlinear system-bath interactions Zhang, Cheng Lambert, Neill Li, Xin-Qi Cirio, Mauro Liang, Pengfei Quantum Physics The theory of purified pseudomodes [arXiv:2412.04264 (2024)] was recently developed to provide a numerical tool for the analysis of the properties of a quantum system and the environment it couples to via linear system-bath interactions. Here we extend this theory to allow for the description of general nonlinear system-bath interactions. We demonstrate the validity of our method by considering the spontaneous decay of a two-level atom placed inside a single-mode lossy cavity and furthermore, its potential application to nanophotonics by calculating the resonance fluorescence spectrum of a quantum dot in the presence of a phonon environment. Our method provides a useful tool for the study of phonon-assisted emission in quantum dots and holds the the promise for broad applications in fields like quantum biology, nonlinear phononics, and nanophotonics. |
| title | Purified pseudomode model for nonlinear system-bath interactions |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2502.18707 |