Quantum and thermal noise in coupled non-Hermitian waveguide systems with different models of gain and loss
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| Format: | Preprint |
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2024
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| _version_ | 1866910402068086784 |
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| author | Hernández, Osmery Liberal, Iñigo |
| author_facet | Hernández, Osmery Liberal, Iñigo |
| contents | Non-Hermitian (NH) photonic systems leverage gain and loss to open new directions for nanophotonic technologies. However, the quantum and thermal noise intrinsically associated with gain/loss affects the eigenvalue/eigenvector structure of NH systems, as well as its practical noise performance. Here, we present a comparative analysis of the impact of different gain and loss mechanisms on the noise generated in gain-loss compensated NH waveguide systems. Our results highlight important differences in the eigenvalue/eigenvector structure, noise power, photon statistics and squeezing. At the same time, we identify some universal properties such as gain-loss compensation, broken to unbroken phase transitions, coalesce of pairs of eigenvectors, and linear scaling of the noise with the length of the waveguide. We believe that these results provide a more global understanding on the impact of the gain/loss mechanism on the noise generated in NH systems. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2404_04975 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum and thermal noise in coupled non-Hermitian waveguide systems with different models of gain and loss Hernández, Osmery Liberal, Iñigo Optics Mesoscale and Nanoscale Physics Applied Physics Quantum Physics Non-Hermitian (NH) photonic systems leverage gain and loss to open new directions for nanophotonic technologies. However, the quantum and thermal noise intrinsically associated with gain/loss affects the eigenvalue/eigenvector structure of NH systems, as well as its practical noise performance. Here, we present a comparative analysis of the impact of different gain and loss mechanisms on the noise generated in gain-loss compensated NH waveguide systems. Our results highlight important differences in the eigenvalue/eigenvector structure, noise power, photon statistics and squeezing. At the same time, we identify some universal properties such as gain-loss compensation, broken to unbroken phase transitions, coalesce of pairs of eigenvectors, and linear scaling of the noise with the length of the waveguide. We believe that these results provide a more global understanding on the impact of the gain/loss mechanism on the noise generated in NH systems. |
| title | Quantum and thermal noise in coupled non-Hermitian waveguide systems with different models of gain and loss |
| topic | Optics Mesoscale and Nanoscale Physics Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2404.04975 |