Signatures of the Optical Stark Effect on Entangled Photon Pairs from Resonantly-Pumped Quantum Dots
Quantum Physics
2024-01-25 v3 Mesoscale and Nanoscale Physics
Abstract
Two-photon resonant excitation of the biexciton-exciton cascade in a quantum dot generates highly polarization-entangled photon pairs in a near-deterministic way. However, the ultimate level of achievable entanglement is still debated. Here, we observe the impact of the laser-induced AC-Stark effect on the quantum dot emission spectra and on entanglement. For increasing pulse-duration/lifetime ratios and pump powers, decreasing values of concurrence are recorded. Nonetheless, additional contributions are still required to fully account for the observed below-unity concurrence.
Keywords
Cite
@article{arxiv.2212.07087,
title = {Signatures of the Optical Stark Effect on Entangled Photon Pairs from Resonantly-Pumped Quantum Dots},
author = {Francesco Basso Basset and Michele B. Rota and Mattia Beccaceci and Tobias M. Krieger and Quirin Buchinger and Julia Neuwirth and Hêlio Huet and Sandra Stroj and Saimon F. Covre da Silva and Giuseppe Ronco and Christian Schimpf and Sven Höfling and Tobias Huber-Loyola and Armando Rastelli and Rinaldo Trotta},
journal= {arXiv preprint arXiv:2212.07087},
year = {2024}
}
Comments
The first two authors contributed equally to this work. 8 pages, 4 figures