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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2311.09043 |
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| _version_ | 1866929347455090688 |
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| author | Lumia, Luca Tirrito, Emanuele Fazio, Rosario Collura, Mario |
| author_facet | Lumia, Luca Tirrito, Emanuele Fazio, Rosario Collura, Mario |
| contents | Repeated measurements can induce entanglement phase transitions in the dynamics of quantum systems. Interacting models, both chaotic and integrable, generically show a stable volume-law entangled phase at low measurement rates which disappears for free, Gaussian fermions. Interactions break the Gaussianity of a dynamical map in its unitary part, but non-Gaussianity can be introduced through measurements as well. By comparing the entanglement and non-Gaussianity structure of different protocols, we propose a new single-particle indicator of the measurement-induced phase transition and we use it to argue in favour of the stability of the transition when non-Gaussianity is purely provided by measurements |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_09043 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Measurement-induced transitions beyond Gaussianity: a single particle description Lumia, Luca Tirrito, Emanuele Fazio, Rosario Collura, Mario Quantum Physics Statistical Mechanics Repeated measurements can induce entanglement phase transitions in the dynamics of quantum systems. Interacting models, both chaotic and integrable, generically show a stable volume-law entangled phase at low measurement rates which disappears for free, Gaussian fermions. Interactions break the Gaussianity of a dynamical map in its unitary part, but non-Gaussianity can be introduced through measurements as well. By comparing the entanglement and non-Gaussianity structure of different protocols, we propose a new single-particle indicator of the measurement-induced phase transition and we use it to argue in favour of the stability of the transition when non-Gaussianity is purely provided by measurements |
| title | Measurement-induced transitions beyond Gaussianity: a single particle description |
| topic | Quantum Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2311.09043 |