title: Slow light in bacteriorhodopsin solution using coherent population oscillations.
abstract: Slow light is demonstrated in liquid phase in an aqueous bacteriorhodopsin (bR) solution at room temperature. Group velocity as low as 3 m/s (all the way to c) is achieved by exploiting the photoisomerization property of bR for coherent population oscillations. Slow light in the liquid phase offers several advantages over solids or vapors for a variety of applications: (i) shorter lifetimes of the M state facilitate slow light at higher modulation frequencies, (ii) convection makes it possible to obtain large signal delays even at high input powers, and (iii) solution concentration is another convenient parameter to vary the signal delay over a wide range.
authors.affiliation: Department of Physics, University of Massachusetts, Boston, Massachusetts 02125, USA.
authors.forename: Chandra S
authors.initials: CS
authors.lastname: Yelleswarapu
authors.forename: Reji
authors.initials: R
authors.lastname: Philip
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Aranda
authors.forename: Brian R
authors.initials: BR
authors.lastname: Kimball
authors.forename: D V G L N
authors.initials: DV
authors.lastname: Rao
mesh_terms: D001436:Bacteriorhodopsins / Q000737:chemistry*; D001683:Biological Clocks; D008027:Light; D012996:Solutions / Q000737:chemistry*
chemical_list: D012996:Solutions; D001436:Bacteriorhodopsins