Inherent quantum resources in stationary spin chains
Fuente:
arXiv
Salvato in:
| Autori principali: | , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866910779213611008 |
|---|---|
| author | Płodzień, Marcin Chwedeńczuk, Jan Lewenstein, Maciej |
| author_facet | Płodzień, Marcin Chwedeńczuk, Jan Lewenstein, Maciej |
| contents | The standard way to generate many-body quantum correlations is via a dynamical protocol: an initial product state is transformed by interactions that generate non-classical correlations at later times. Here, we show that many-body Bell correlations are inherently present in the eigenstates of a variety of spin-1/2 chains. In particular, we show that the eigenstates and thermal states of the collective Lipkin-Meshkov-Glick model possess many-body Bell correlations. We demonstrate that the Bell correlations can take on quantized values that change discontinuously with variations in the total magnetization. Finally, we show that these many-body Bell correlations persist even in the presence of both diagonal and off-diagonal disorder. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_16974 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Inherent quantum resources in stationary spin chains Płodzień, Marcin Chwedeńczuk, Jan Lewenstein, Maciej Quantum Physics Quantum Gases The standard way to generate many-body quantum correlations is via a dynamical protocol: an initial product state is transformed by interactions that generate non-classical correlations at later times. Here, we show that many-body Bell correlations are inherently present in the eigenstates of a variety of spin-1/2 chains. In particular, we show that the eigenstates and thermal states of the collective Lipkin-Meshkov-Glick model possess many-body Bell correlations. We demonstrate that the Bell correlations can take on quantized values that change discontinuously with variations in the total magnetization. Finally, we show that these many-body Bell correlations persist even in the presence of both diagonal and off-diagonal disorder. |
| title | Inherent quantum resources in stationary spin chains |
| topic | Quantum Physics Quantum Gases |
| url | https://arxiv.org/abs/2405.16974 |