Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/112076
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Type: | Journal article |
Title: | Engineering photon-photon interactions within rubidium-filled waveguides |
Author: | Perrella, C. Light, P. Vahid, S. Benabid, F. Luiten, A. |
Citation: | Physical Review Applied, 2018; 9(4):044001-1-044001-9 |
Publisher: | American Physical Society |
Issue Date: | 2018 |
ISSN: | 2331-7019 2331-7019 |
Statement of Responsibility: | C. Perrella, P.S. Light, S. Afshar Vahid, F. Benabid, and A.N. Luiten |
Abstract: | Strong photon-photon interactions are a required ingredient for deterministic two-photon optical quantum logic gates. Multiphoton transitions in dense atomic vapors have been shown to be a promising avenue for producing such interactions. The strength of a multiphoton interaction can be enhanced by conducting the interaction in highly confined geometries such as small-cross-section optical waveguides. We demonstrate, both experimentally and theoretically, that the strength of such interactions scale only with the optical mode diameter, d, not d² as might be initially expected. This weakening of the interaction arises from atomic motion inside the waveguides. We create an interaction between two optical signals, at 780 and 776 nm, using the 5S₁⁄₂ → 5D₅⁄₂ two-photon transition in rubidium vapor within a range of hollow-core fibers with different core sizes. The interaction strength is characterized by observing the absorption and phase shift induced on the 780-nm beam, which is in close agreement with theoretical modeling that accounts for the atomic motion inside the fibers. These observations demonstrate that transit-time effects upon multiphoton transitions are of key importance when engineering photon-photon interactions within small-cross-section waveguides that might otherwise be thought to lead to enhanced optical nonlinearity through increased intensities. |
Rights: | © 2018 American Physical Society |
DOI: | 10.1103/PhysRevApplied.9.044001 |
Grant ID: | http://purl.org/au-research/grants/arc/DP0877938 http://purl.org/au-research/grants/arc/DE120102028 http://purl.org/au-research/grants/arc/FT0991631 |
Published version: | http://dx.doi.org/10.1103/physrevapplied.9.044001 |
Appears in Collections: | Aurora harvest 3 IPAS publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_112076.pdf | Accepted Version | 8.51 MB | Adobe PDF | View/Open |
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