Long-Distance Coupling and Energy Transfer between Exciton States in Magnetically Controlled Microcavities
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2020
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| _version_ | 1866912029393027072 |
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| author | Ściesiek, Maciej Sawicki, Krzysztof Pacuski, Wojciech Sobczak, Kamil Kazimierczuk, Tomasz Golnik, Andrzej Suffczyński, Jan |
| author_facet | Ściesiek, Maciej Sawicki, Krzysztof Pacuski, Wojciech Sobczak, Kamil Kazimierczuk, Tomasz Golnik, Andrzej Suffczyński, Jan |
| contents | Coupling of quantum emitters in a semiconductor relies, generally, on short-range dipole-dipole or electronic exchange type interactions. Consistently, energy transfer between exciton states, that is, electron-hole pairs bound by Coulomb interaction, is limited to distances of the order of 10~nm. Here, we demonstrate polariton-mediated coupling and energy transfer between excitonic states over a distance exceeding 2~$μ$m. We accomplish this by coupling quantum well-confined excitons through the delocalized mode of two coupled optical microcavities. Use of magnetically doped quantum wells enables us to tune the confined exciton energy by the magnetic field and in this way to control the spatial direction of the transfer. Such controlled, long-distance interaction between coherently coupled quantum emitters opens possibilities of a scalable implementation of quantum networks and quantum simulators based on solid-state, multi-cavity systems. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2009_08554 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Long-Distance Coupling and Energy Transfer between Exciton States in Magnetically Controlled Microcavities Ściesiek, Maciej Sawicki, Krzysztof Pacuski, Wojciech Sobczak, Kamil Kazimierczuk, Tomasz Golnik, Andrzej Suffczyński, Jan Mesoscale and Nanoscale Physics Other Condensed Matter Coupling of quantum emitters in a semiconductor relies, generally, on short-range dipole-dipole or electronic exchange type interactions. Consistently, energy transfer between exciton states, that is, electron-hole pairs bound by Coulomb interaction, is limited to distances of the order of 10~nm. Here, we demonstrate polariton-mediated coupling and energy transfer between excitonic states over a distance exceeding 2~$μ$m. We accomplish this by coupling quantum well-confined excitons through the delocalized mode of two coupled optical microcavities. Use of magnetically doped quantum wells enables us to tune the confined exciton energy by the magnetic field and in this way to control the spatial direction of the transfer. Such controlled, long-distance interaction between coherently coupled quantum emitters opens possibilities of a scalable implementation of quantum networks and quantum simulators based on solid-state, multi-cavity systems. |
| title | Long-Distance Coupling and Energy Transfer between Exciton States in Magnetically Controlled Microcavities |
| topic | Mesoscale and Nanoscale Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2009.08554 |