Noisy propagation of Gaussian states in optical media with finite bandwidth
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866915152947838976 |
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| author | Teklu, Berihu Bina, Matteo Paris, Matteo G. A. |
| author_facet | Teklu, Berihu Bina, Matteo Paris, Matteo G. A. |
| contents | We address propagation and entanglement of Gaussian states in optical media characterised by non-trivial spectral densities. In particular, we consider environments with a finite bandwidth and show that in the low temperature regime: i) secular terms in the master equation may be neglected; ii) attenuation (damping) is strongly suppressed; iii) the overall diffusion process may be described as a Gaussian noise channel with variance depending only on the bandwidth. We find several regimes where propagation is not much detrimental and entanglement may be protected form decoherence. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_07837 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Noisy propagation of Gaussian states in optical media with finite bandwidth Teklu, Berihu Bina, Matteo Paris, Matteo G. A. Quantum Physics We address propagation and entanglement of Gaussian states in optical media characterised by non-trivial spectral densities. In particular, we consider environments with a finite bandwidth and show that in the low temperature regime: i) secular terms in the master equation may be neglected; ii) attenuation (damping) is strongly suppressed; iii) the overall diffusion process may be described as a Gaussian noise channel with variance depending only on the bandwidth. We find several regimes where propagation is not much detrimental and entanglement may be protected form decoherence. |
| title | Noisy propagation of Gaussian states in optical media with finite bandwidth |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2205.07837 |