On-demand source of maximally entangled photon-pairs using the biexciton-exciton radiative cascade
Quantum Physics
2017-07-05 v1
Abstract
We perform full time resolved tomographic measurements of the polarization state of pairs of photons emitted during the radiative cascade of the confined biexciton in a semiconductor quantum dot. The biexciton was deterministically initiated using a -area pulse into the biexciton two-photon absorption resonance. Our measurements demonstrate that the polarization states of the emitted photon pair are maximally entangled. We show that the measured degree of entanglement depends solely on the temporal resolution by which the time difference between the emissions of the photon pair is determined. A route for fabricating an on demand source of maximally polarization entangled photon pairs is thereby provided.
Keywords
Cite
@article{arxiv.1703.04380,
title = {On-demand source of maximally entangled photon-pairs using the biexciton-exciton radiative cascade},
author = {R. Winik and D. Cogan and Y. Don and I. Schwartz and L. Gantz and E. R. Schmidgall and N. Livneh and R. Rapaport and E. Buks and D. Gershoni},
journal= {arXiv preprint arXiv:1703.04380},
year = {2017}
}