Details

Autor(en) / Beteiligte

• Roy, Parna
• Pandey, Anshu

Titel

Engineering quantum dots for improved single photon emission statistics

Ist Teil von

• The Journal of chemical physics, 2024-05, Vol.160 (20)

Ort / Verlag

United States: American Institute of Physics

Erscheinungsjahr

2024

Quelle

AIP Journals (American Institute of Physics)

Beschreibungen/Notizen

• High fidelity single photon sources are required for the implementation of quantum information processing and communications protocols. Although colloidal quantum dots (CQDs) are single photon sources, their efficacy is limited by their tendency to show finite multiphoton emission at higher excitation powers. Here, we show that wave function engineering of CQDs enables the realization of emitters with significantly improved single photon emission performance. We study the ZnS/CdSe/CdS system. It is shown that this system offers significantly improved probabilities of single photon emission. While conventional CQDs such as CdSe/CdS exhibit a g2(0) > 0.5 ± 0.02 at ⟨N⟩ = 2.17, ZnS/CdSe/CdS show a greatly improved g2(0) ≈ 0.04 ± 0.01. Improved single photon emission performance encourages the use of colloidal materials as quantum light sources in emerging quantum devices.