Entanglement in an expanding toroidal Bose-Einstein condensate
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2023
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866910503150813184 |
|---|---|
| author | Bhardwaj, Anshuman Agullo, Ivan Kranas, Dimitrios Wilson, Justin H. Sheehy, Daniel E. |
| author_facet | Bhardwaj, Anshuman Agullo, Ivan Kranas, Dimitrios Wilson, Justin H. Sheehy, Daniel E. |
| contents | Recent experiments have employed rapidly expanding toroidal Bose-Einstein condensates (BECs) to mimic the inflationary expansion in the early universe. One expected signature of the expansion in such experiments is spontaneous particle creation (of phonons) which is observable in density-density correlations. We study entanglement of these particles, which are known to result in a two-mode squeezed state. Using techniques for Gaussian states of continuous variable systems, we quantify the entanglement generated in this system, including effects such as decoherence and the use of an initially squeezed state, which can suppress and enhance entanglement, respectively. We also describe a protocol to experimentally measure the correlations entering the covariance matrix, allowing an experimental quantification of the entanglement properties of the inflationary BEC. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_07560 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Entanglement in an expanding toroidal Bose-Einstein condensate Bhardwaj, Anshuman Agullo, Ivan Kranas, Dimitrios Wilson, Justin H. Sheehy, Daniel E. Quantum Gases General Relativity and Quantum Cosmology Recent experiments have employed rapidly expanding toroidal Bose-Einstein condensates (BECs) to mimic the inflationary expansion in the early universe. One expected signature of the expansion in such experiments is spontaneous particle creation (of phonons) which is observable in density-density correlations. We study entanglement of these particles, which are known to result in a two-mode squeezed state. Using techniques for Gaussian states of continuous variable systems, we quantify the entanglement generated in this system, including effects such as decoherence and the use of an initially squeezed state, which can suppress and enhance entanglement, respectively. We also describe a protocol to experimentally measure the correlations entering the covariance matrix, allowing an experimental quantification of the entanglement properties of the inflationary BEC. |
| title | Entanglement in an expanding toroidal Bose-Einstein condensate |
| topic | Quantum Gases General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2307.07560 |