Signatures of the Optical Stark Effect on Entangled Photon Pairs from Resonantly Pumped Quantum Dots.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
20 Oct 2023
Historique:
received: 24 01 2023
revised: 05 05 2023
accepted: 02 08 2023
medline: 5 11 2023
pubmed: 5 11 2023
entrez: 5 11 2023
Statut: ppublish

Résumé

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-to-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.

Identifiants

DOI: 10.1103/PhysRevLett.131.166901 PMID: 37925701
pubmed: 37925701
doi: 10.1103/PhysRevLett.131.166901
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

166901

Auteurs

F Basso Basset (F)

Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

M B Rota (MB)

Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

M Beccaceci (M)

Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

T M Krieger (TM)

Institute of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria.

Q Buchinger (Q)

Technical Physics, University of Würzburg, 97074 Würzburg, Germany.

J Neuwirth (J)

Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

H Huet (H)

Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

S Stroj (S)

Forschungszentrum Mikrotechnik, FH Vorarlberg, 6850 Dornbirn, Austria.

S F Covre da Silva (SF)

Institute of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria.

G Ronco (G)

Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

C Schimpf (C)

Institute of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria.

S Höfling (S)

Technical Physics, University of Würzburg, 97074 Würzburg, Germany.

T Huber-Loyola (T)

Technical Physics, University of Würzburg, 97074 Würzburg, Germany.

A Rastelli (A)

Institute of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria.

R Trotta (R)

Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

Classifications MeSH