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|Title:||Demonstration of an exposed-core fiber platform for two photon rubidium spectroscopy|
|Citation:||Physical Review Applied, 2015; 4(1):014013-1-014013-7|
|Publisher:||American Physical Society|
|C. Perrella, H.P. Griesser, P.S. Light, R. Kostecki, T.M. Stace, H. Ebendorff-Heidepriem, T.M. Monro, A.G. White, and A.N. Luiten|
|Abstract:||We demonstrate a promising fiber architecture for generating strong photon-photon interactions. Exposed-core silica optical fibers possess low-loss guidance between 400 and 1700 nm crucial for quantum-logic applications. The potential of this fiber is demonstrated by exciting a two-photon transition within a rubidium vapor using an exposed-core silica optical fiber. Transit-time broadened spectral features enable measurement of the evanescent-field scale length of (120 ± 20) nm which shows excellent agreement with the characteristics of the modeled fiber mode (118 ± 2) nm. We observe a two-photon absorption coefficient of 8.3 cm-1 for one optical mode in response to a transmitted power of 1.3 mW in the second mode. A clear pathway to an exposed-core fiber exhibiting substantial absorption mediated by a single photon is identified.|
|Rights:||© 2015 American Physical Society|
|Appears in Collections:||Aurora harvest 7|
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