Purcell-enhanced dipolar interactions in nanostructures
Strong light-induced interactions between atoms are known to cause nonlinearities at a few-photon level, which are crucial for applications in quantum information processing. Compared to free space, the scattering and the light-induced dipolar interaction of atoms can be enhanced by a dielectric env...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2022-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.4.023073 |
| _version_ | 1797210799800844288 |
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| author | A. Skljarow H. Kübler C. S. Adams T. Pfau R. Löw H. Alaeian |
| author_facet | A. Skljarow H. Kübler C. S. Adams T. Pfau R. Löw H. Alaeian |
| author_sort | A. Skljarow |
| collection | DOAJ |
| description | Strong light-induced interactions between atoms are known to cause nonlinearities at a few-photon level, which are crucial for applications in quantum information processing. Compared to free space, the scattering and the light-induced dipolar interaction of atoms can be enhanced by a dielectric environment. For this Purcell effect, either a cavity or a waveguide can be used. Here, we combine the high densities achievable in thermal atomic vapors with an efficient coupling to a slot waveguide. In contrast to free-space interactions, atoms aligned within the slot exhibit repulsive interactions that are further enhanced by a factor of 8 due to the Purcell effect. The corresponding blueshift of the transition frequency of atoms arranged in the essentially one-dimensional geometry vanishes above the saturation, providing a controllable nonlinearity at the few-photon level. The experimental results are in good agreement with Monte Carlo simulations that include the dielectric environment, dipolar interactions, and motional effects. The results pave the way towards a robust scalable platform for quantum nonlinear optics and all-optical quantum information processing at room temperature. |
| first_indexed | 2024-04-24T10:16:20Z |
| format | Article |
| id | doaj.art-87b0c7151f5f4e1580cc084a4ab04f3e |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:16:20Z |
| publishDate | 2022-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-87b0c7151f5f4e1580cc084a4ab04f3e2024-04-12T17:20:18ZengAmerican Physical SocietyPhysical Review Research2643-15642022-04-014202307310.1103/PhysRevResearch.4.023073Purcell-enhanced dipolar interactions in nanostructuresA. SkljarowH. KüblerC. S. AdamsT. PfauR. LöwH. AlaeianStrong light-induced interactions between atoms are known to cause nonlinearities at a few-photon level, which are crucial for applications in quantum information processing. Compared to free space, the scattering and the light-induced dipolar interaction of atoms can be enhanced by a dielectric environment. For this Purcell effect, either a cavity or a waveguide can be used. Here, we combine the high densities achievable in thermal atomic vapors with an efficient coupling to a slot waveguide. In contrast to free-space interactions, atoms aligned within the slot exhibit repulsive interactions that are further enhanced by a factor of 8 due to the Purcell effect. The corresponding blueshift of the transition frequency of atoms arranged in the essentially one-dimensional geometry vanishes above the saturation, providing a controllable nonlinearity at the few-photon level. The experimental results are in good agreement with Monte Carlo simulations that include the dielectric environment, dipolar interactions, and motional effects. The results pave the way towards a robust scalable platform for quantum nonlinear optics and all-optical quantum information processing at room temperature.http://doi.org/10.1103/PhysRevResearch.4.023073 |
| spellingShingle | A. Skljarow H. Kübler C. S. Adams T. Pfau R. Löw H. Alaeian Purcell-enhanced dipolar interactions in nanostructures Physical Review Research |
| title | Purcell-enhanced dipolar interactions in nanostructures |
| title_full | Purcell-enhanced dipolar interactions in nanostructures |
| title_fullStr | Purcell-enhanced dipolar interactions in nanostructures |
| title_full_unstemmed | Purcell-enhanced dipolar interactions in nanostructures |
| title_short | Purcell-enhanced dipolar interactions in nanostructures |
| title_sort | purcell enhanced dipolar interactions in nanostructures |
| url | http://doi.org/10.1103/PhysRevResearch.4.023073 |
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