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Signatures of the Optical Stark Effect on Entangled Photon Pairs from Resonantly-Pumped Quantum Dots
- Source :
- Phys. Rev. Lett. 131 (2023) 166901
- Publication Year :
- 2022
-
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.<br />Comment: The first two authors contributed equally to this work. 8 pages, 4 figures
- Subjects :
- Quantum Physics
Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 131 (2023) 166901
- Publication Type :
- Report
- Accession number :
- edsarx.2212.07087
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.131.166901