Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2005-11-11
J. Phys. A: Math. Gen. 38 (2005) 10465-10488
Physics
Condensed Matter
Disordered Systems and Neural Networks
RevTex 16 pages, 12 figures; to appear in special issue of J. Phys. A on quantum chaotic scattering
Scientific paper
10.1088/0305-4470/38/49/002
Signatures of photon localization are observed in a constellation of transport phenomena which reflect the transition from diffusive to localized waves. The dimensionless conductance, g, and the ratio of the typical spectral width and spacing of quasimodes, \delta, are key indicators of electronic and classical wave localization when inelastic processes are absent. However, these can no longer serve as localization parameters in absorbing samples since the affect of absorption depends upon the length of the trajectories of partial waves traversing the sample, which are superposed to create the scattered field. A robust determination of localization in the presence of absorption is found, however, in steady-state measurements of the statistics of radiation transmitted through random samples. This is captured in a single parameter, the variance of the total transmission normalized to its ensemble average value, which is equal to the degree of intensity correlation of the transmitted wave, \kappa. The intertwined effects of localization and absorption can also be disentangled in the time domain since all waves emerging from the sample at a fixed time delay from an exciting pulse, t, are suppressed equally by absorption. As a result, the relative weights of partial waves emerging from the sample, and hence the statistics of intensity fluctuations and correlation, and the suppression of propagation by weak localization are not changed by absorption, and manifest the growing impact of weak localization with t.
Chabanov Andrey
Genack Azriel Z.
No associations
LandOfFree
Signatures of photon localization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Signatures of photon localization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signatures of photon localization will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-291822