Non-Gaussian correlations between reflected and transmitted intensity patterns emerging from opaque disordered media (article)
Physical Review X
American Physical Society
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license: https://creativecommons.org/licenses/by/4.0/. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
The propagation of monochromatic light through a scattering medium produces speckle patterns in reflection and transmission, and the apparent randomness of these patterns prevents direct imaging through thick turbid media. Yet, since elastic multiple scattering is fundamentally a linear and deterministic process, information is not lost but distributed among many degrees of freedom that can be resolved and manipulated. Here we demonstrate experimentally that the reflected and transmitted speckle patterns are correlated, even for opaque media with thickness much larger than the transport mean free path, proving that information survives the multiple scattering process and can be recovered. The existence of mutual information between the two sides of a scattering medium opens up new possibilities for the control of transmitted light without any feedback from the target side, but using only information gathered from the reflected speckle.
This work was supported by the Leverhulme Trust’s Philip Leverhulme Prize, and by LABEX WIFI (Laboratory of Excellence within the French Program “Investments for the Future”) under references ANR-10-LABX24 and ANR-10-IDEX-0001-02 PSL*. I.S. and A.M.PD. acknowledge support from EPSRC (EP/L015331/1) through the Centre of Doctoral Training in Metamaterials (XM2 ). N.F. acknowledges financial support from the French “Direction Générale de l’Armement” (DGA).
This is the author accepted manuscript. The final version is available from American Physical Society via the DOI in this record
The dataset associated with this article is located in ORE at: http://hdl.handle.net/10871/32430
Vol. 8, article 021041