Open AccessUsing state tomography for characterizing input principal modes in optically scattering medium
Author(s) -
Jun Yang,
Daniel A. Nolan
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.027691
Subject(s) - optics , physics , degenerate energy levels , tomography , eigenvalues and eigenvectors , scattering , measure (data warehouse) , quantum tomography , principal (computer security) , principal axis theorem , quantum optics , phase conjugation , state (computer science) , computational physics , computer science , quantum state , quantum , quantum mechanics , algorithm , mathematics , laser , geometry , database , operating system
We propose two new methods to measure principal modes, or Eisenbud-Wigner-Smith eigenstates in optically scattering medium. Both methods use similar techniques as in quantum state tomography, and are based on direct measurement of temporal delays. The first method requires N 2 different input launching conditions, and only the mean signal delay of these input states are needed to obtain full information of the principal modes. When the mode delay differences are large and all modes are non-degenerate, a second method can be used, which only requires 3N - 2 input launching conditions.