Phys. Rev. A 76, 022101 (2007) [4 pages]Path distinguishability in double scattering of light by atomsReceived 17 April 2007; published 8 August 2007 Wave-particle duality finds a natural application for electrons or light propagating in disordered media where coherent corrections to transport are given by two-wave interference. For scatterers with internal degrees of freedom, these corrections are observed to be much smaller than would be expected for structureless scatterers. By examining the basic example of the scattering of one photon by two spin-1/2 atoms—a case study for coherent backscattering—we demonstrate that the loss of interference strength is associated with which-path information stored by the scattering atoms. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.022101
DOI:
10.1103/PhysRevA.76.022101
PACS:
03.65.Ta, 42.25.Hz, 42.50.Xa
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