On the robustness of entanglement in analogue gravity systems
We investigate the possibility of generating quantum-correlated quasi-particles utilizing analogue gravity systems. The quantumness of these correlations is a key aspect of analogue gravity effects and their presence allows for a clear separation between classical and quantum analogue gravity effect...
| Main Authors: | , , , |
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| Format: | Article |
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IOP Publishing
2013
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| Online Access: | https://eprints.nottingham.ac.uk/40860/ |
| _version_ | 1848796149237940224 |
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| author | Bruschi, David Edward Friis, Nicolai Fuentes, Ivette Weinfurtner, Silke |
| author_facet | Bruschi, David Edward Friis, Nicolai Fuentes, Ivette Weinfurtner, Silke |
| author_sort | Bruschi, David Edward |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We investigate the possibility of generating quantum-correlated quasi-particles utilizing analogue gravity systems. The quantumness of these correlations is a key aspect of analogue gravity effects and their presence allows for a clear separation between classical and quantum analogue gravity effects. However, experiments in analogue systems, such as Bose–Einstein condensates (BECs) and shallow water waves, are always conducted at non-ideal conditions, in particular, one is dealing with dispersive media at non-zero temperatures. We analyse the influence of the initial temperature on the entanglement generation in analogue gravity phenomena. We lay out all the necessary steps to calculate the entanglement generated between quasi-particle modes and we analytically derive an upper bound on the maximal temperature at which given modes can still be entangled. We further investigate a mechanism to enhance the quantum correlations. As a particular example, we analyse the robustness of the entanglement creation against thermal noise in a sudden quench of an ideally homogeneous BEC, taking into account the super-sonic dispersion relations. |
| first_indexed | 2025-11-14T19:43:23Z |
| format | Article |
| id | nottingham-40860 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:43:23Z |
| publishDate | 2013 |
| publisher | IOP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-408602020-05-04T16:39:40Z https://eprints.nottingham.ac.uk/40860/ On the robustness of entanglement in analogue gravity systems Bruschi, David Edward Friis, Nicolai Fuentes, Ivette Weinfurtner, Silke We investigate the possibility of generating quantum-correlated quasi-particles utilizing analogue gravity systems. The quantumness of these correlations is a key aspect of analogue gravity effects and their presence allows for a clear separation between classical and quantum analogue gravity effects. However, experiments in analogue systems, such as Bose–Einstein condensates (BECs) and shallow water waves, are always conducted at non-ideal conditions, in particular, one is dealing with dispersive media at non-zero temperatures. We analyse the influence of the initial temperature on the entanglement generation in analogue gravity phenomena. We lay out all the necessary steps to calculate the entanglement generated between quasi-particle modes and we analytically derive an upper bound on the maximal temperature at which given modes can still be entangled. We further investigate a mechanism to enhance the quantum correlations. As a particular example, we analyse the robustness of the entanglement creation against thermal noise in a sudden quench of an ideally homogeneous BEC, taking into account the super-sonic dispersion relations. IOP Publishing 2013-11-30 Article PeerReviewed Bruschi, David Edward, Friis, Nicolai, Fuentes, Ivette and Weinfurtner, Silke (2013) On the robustness of entanglement in analogue gravity systems. New Journal of Physics, 15 (113016). pp. 1-12. ISSN 1367-2630 http://iopscience.iop.org/article/10.1088/1367-2630/15/11/113016/meta doi:10.1088/1367-2630/15/11/113016 doi:10.1088/1367-2630/15/11/113016 |
| spellingShingle | Bruschi, David Edward Friis, Nicolai Fuentes, Ivette Weinfurtner, Silke On the robustness of entanglement in analogue gravity systems |
| title | On the robustness of entanglement in analogue gravity systems |
| title_full | On the robustness of entanglement in analogue gravity systems |
| title_fullStr | On the robustness of entanglement in analogue gravity systems |
| title_full_unstemmed | On the robustness of entanglement in analogue gravity systems |
| title_short | On the robustness of entanglement in analogue gravity systems |
| title_sort | on the robustness of entanglement in analogue gravity systems |
| url | https://eprints.nottingham.ac.uk/40860/ https://eprints.nottingham.ac.uk/40860/ https://eprints.nottingham.ac.uk/40860/ |