Photoinduced electron pairing in a driven cavity
We demonstrate how virtual scattering of laser photons inside a cavity via two-photon processes can induce controllable long-range electron interactions in two-dimensional materials. We show that laser light that is red(blue)-detuned from the cavity yields attractive(repulsive) interactions, whose s...
| Main Authors: | , , , , |
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| 格式: | Journal article |
| 语言: | English |
| 出版: |
American Physical Society
2020
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| _version_ | 1826279183063449600 |
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| author | Gao, H Schlawin, F Buzzi, M Cavalleri, A Jaksch, D |
| author_facet | Gao, H Schlawin, F Buzzi, M Cavalleri, A Jaksch, D |
| author_sort | Gao, H |
| collection | OXFORD |
| description | We demonstrate how virtual scattering of laser photons inside a cavity via two-photon processes can induce controllable long-range electron interactions in two-dimensional materials. We show that laser light that is red(blue)-detuned from the cavity yields attractive(repulsive) interactions, whose strength is proportional to the laser intensity. Furthermore, we find that the interactions are not screened effectively except at very low frequencies. For realistic cavity parameters, laserinduced heating of the electrons by inelastic photon scattering is suppressed and coherent electron interactions dominate. When the interactions are attractive, they cause an instability in the Cooper channel at a temperature proportional to the square root of the driving intensity. Our results provide a novel route for engineering electron interactions in a wide range of two-dimensional materials including AB-stacked bilayer graphene and the conducting interface between LaAlO3 and SrTiO3. |
| first_indexed | 2024-03-06T23:54:58Z |
| format | Journal article |
| id | oxford-uuid:73e40d4f-cac2-4e76-834d-26a2d1b23288 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:54:58Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:73e40d4f-cac2-4e76-834d-26a2d1b232882022-03-26T19:59:22ZPhotoinduced electron pairing in a driven cavityJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:73e40d4f-cac2-4e76-834d-26a2d1b23288EnglishSymplectic ElementsAmerican Physical Society2020Gao, HSchlawin, FBuzzi, MCavalleri, AJaksch, DWe demonstrate how virtual scattering of laser photons inside a cavity via two-photon processes can induce controllable long-range electron interactions in two-dimensional materials. We show that laser light that is red(blue)-detuned from the cavity yields attractive(repulsive) interactions, whose strength is proportional to the laser intensity. Furthermore, we find that the interactions are not screened effectively except at very low frequencies. For realistic cavity parameters, laserinduced heating of the electrons by inelastic photon scattering is suppressed and coherent electron interactions dominate. When the interactions are attractive, they cause an instability in the Cooper channel at a temperature proportional to the square root of the driving intensity. Our results provide a novel route for engineering electron interactions in a wide range of two-dimensional materials including AB-stacked bilayer graphene and the conducting interface between LaAlO3 and SrTiO3. |
| spellingShingle | Gao, H Schlawin, F Buzzi, M Cavalleri, A Jaksch, D Photoinduced electron pairing in a driven cavity |
| title | Photoinduced electron pairing in a driven cavity |
| title_full | Photoinduced electron pairing in a driven cavity |
| title_fullStr | Photoinduced electron pairing in a driven cavity |
| title_full_unstemmed | Photoinduced electron pairing in a driven cavity |
| title_short | Photoinduced electron pairing in a driven cavity |
| title_sort | photoinduced electron pairing in a driven cavity |
| work_keys_str_mv | AT gaoh photoinducedelectronpairinginadrivencavity AT schlawinf photoinducedelectronpairinginadrivencavity AT buzzim photoinducedelectronpairinginadrivencavity AT cavalleria photoinducedelectronpairinginadrivencavity AT jakschd photoinducedelectronpairinginadrivencavity |