The two-photon dressing of a "three-level ladder" system, here the ground state, the exciton and the biexciton of a semiconductor quantum dot, leads to new eigenstates and allows one to manipulate the time ordering of the paired photons without unitary post processing. We show that, after spectral post-selection of the single dressed states, the time ordering of the cascaded photons can be removed or conserved. Our joint experimental and theoretical study demonstrates the high potential of a "ladder" system to be a versatile source of orthogonally polarized, bunched or antibunched pairs of photons.
@article{arxiv.1610.08268,
title = {Path-controlled time reordering of paired photons in a dressed three-level cascade},
author = {Samir Bounouar and Max Strauß and Alexander Carmele and Peter Schnauber and Alexander Thoma and Manuel Gschrey and Jan-Hindrik Schulze and André Strittmatter and Sven Rodt and Andreas Knorr and Stephan Reitzenstein},
journal= {arXiv preprint arXiv:1610.08268},
year = {2017}
}