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Quantum correlated light beams from non-degenerate four-wave mixing in an atomic vapor: the D1 and D2 lines of \^85Rb and \^87Rb

TitleQuantum correlated light beams from non-degenerate four-wave mixing in an atomic vapor: the D1 and D2 lines of \^85Rb and \^87Rb
Publication TypeJournal Article
Year of Publication2009
AuthorsR. C. Pooser, A. M. Marino, V. Boyer, K. M. Jones, and P. D. Lett
JournalOptics Express
Volume17
Pagination16722
Date Publishedsep
ISSN1094-4087
Keywords2009, Nonlinear optical devices, Squeezed states
Abstract

We present experimental results showing that quantum correlated light can be produced using non-degenerate, off-resonant, four-wave mixing (4WM) on both the D1 (795 nm) and D2 (780 nm) lines of 85Rb and 87Rb, extending earlier work on the D1 line of 85Rb. Using this 4WM process in a hot vapor cell to produce bright twin beams, we characterize the degree of intensity-difference noise reduction below the standard quantum limit for each of the four systems. Although each system approximates a double-lambda configuration, differences in details of the actual level structure lead to varying degrees of noise reduction. The observation of quantum correlations on light produced using all four of these systems, regardless of their substructure, suggests that it should be possible to use other systems with similar level structures in order to produce narrow frequency, non-classical beams at a particular wavelength.

URLhttp://www.opticsexpress.org/abstract.cfm?URI=oe-17-19-16722

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