Multimode entanglement in coupled cavity arrays
We study a driven-dissipative array of coupled nonlinear optical resonators by numerically solving the von Neumann equation for the density matrix. We demonstrate that quantum correlated states of many photons can also be generated in the limit where the nonlinearity is much smaller than the losses,...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/2/025015 |
| _version_ | 1797751726995931136 |
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| author | T C H Liew V Savona |
| author_facet | T C H Liew V Savona |
| author_sort | T C H Liew |
| collection | DOAJ |
| description | We study a driven-dissipative array of coupled nonlinear optical resonators by numerically solving the von Neumann equation for the density matrix. We demonstrate that quantum correlated states of many photons can also be generated in the limit where the nonlinearity is much smaller than the losses, contrary to common expectations. Quantum correlations in this case arise from the interference between different pathways that the system can follow in the Hilbert space to reach its steady state under the effect of coherent driving fields. We characterize, in particular, two systems: a linear chain of three coupled cavities and an array of eight coupled cavities. We demonstrate the existence of a parameter range where the system emits photons with continuous-variable bipartite and quadripartite entanglement, in the case of the first and the second system, respectively. This entanglement is shown to survive realistic rates of pure dephasing and opens up a new perspective for the realization of quantum simulators or entangled photon sources without the challenging requirement of strong optical nonlinearities. |
| first_indexed | 2024-03-12T16:52:50Z |
| format | Article |
| id | doaj.art-9ca5d40fe0394a6f9df44125b9728722 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:52:50Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-9ca5d40fe0394a6f9df44125b97287222023-08-08T11:05:51ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115202501510.1088/1367-2630/15/2/025015Multimode entanglement in coupled cavity arraysT C H Liew0V Savona1School of Physical and Mathematical Sciences, Nanyang Technological University , 637371 Singapore, Singapore; Institute of Theoretical Physics , Ecole Polytechnique Fédérale de Lausanne EPFL, CH-1015 Lausanne, SwitzerlandInstitute of Theoretical Physics , Ecole Polytechnique Fédérale de Lausanne EPFL, CH-1015 Lausanne, SwitzerlandWe study a driven-dissipative array of coupled nonlinear optical resonators by numerically solving the von Neumann equation for the density matrix. We demonstrate that quantum correlated states of many photons can also be generated in the limit where the nonlinearity is much smaller than the losses, contrary to common expectations. Quantum correlations in this case arise from the interference between different pathways that the system can follow in the Hilbert space to reach its steady state under the effect of coherent driving fields. We characterize, in particular, two systems: a linear chain of three coupled cavities and an array of eight coupled cavities. We demonstrate the existence of a parameter range where the system emits photons with continuous-variable bipartite and quadripartite entanglement, in the case of the first and the second system, respectively. This entanglement is shown to survive realistic rates of pure dephasing and opens up a new perspective for the realization of quantum simulators or entangled photon sources without the challenging requirement of strong optical nonlinearities.https://doi.org/10.1088/1367-2630/15/2/025015 |
| spellingShingle | T C H Liew V Savona Multimode entanglement in coupled cavity arrays New Journal of Physics |
| title | Multimode entanglement in coupled cavity arrays |
| title_full | Multimode entanglement in coupled cavity arrays |
| title_fullStr | Multimode entanglement in coupled cavity arrays |
| title_full_unstemmed | Multimode entanglement in coupled cavity arrays |
| title_short | Multimode entanglement in coupled cavity arrays |
| title_sort | multimode entanglement in coupled cavity arrays |
| url | https://doi.org/10.1088/1367-2630/15/2/025015 |
| work_keys_str_mv | AT tchliew multimodeentanglementincoupledcavityarrays AT vsavona multimodeentanglementincoupledcavityarrays |