Open AccessMode multiplexed single-photon and classical channels in a few-mode fiber
Author(s) -
Joel Carpenter,
Chunle Xiong,
Matthew J. Collins,
Juntao Li,
Thomas F. Krauss,
Benjamin J. Eggleton,
Alex S. Clark,
Jochen Schröder
Publication year - 2013
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.21.028794
Subject(s) - optics , physics , mode volume , single mode optical fiber , modal , multiplexing , multi mode optical fiber , optical fiber , photon , polarization (electrochemistry) , quantum channel , polarization maintaining optical fiber , fiber optic sensor , quantum , telecommunications , computer science , quantum information , plastic optical fiber , materials science , quantum mechanics , chemistry , polymer chemistry
We classically measure the entire propagation matrix of a few-mode fiber and use a spatial light modulator to undo modal mixing and recover single-photons launched onto each of the eigenmodes of the fiber at one end, but arriving as mixed modal superpositions at the other. We exploit the orthogonality of these modal channels to improve the isolation between a quantum and classical channel launched onto different spatial and polarization modes at different wavelengths. The spatial diversity of the channels provides an additional 35dB of isolation in addition to that provided by polarization and wavelength.