Roy, P and Pandey, A (2024) Engineering quantum dots for improved single photon emission statistics. In: Journal of Chemical Physics, 160 (20).
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Abstract
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. © 2024 Author(s).
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Chemical Physics |
| Publisher: | American Institute of Physics |
| Additional Information: | The copyright for this article belongs to the authors. |
| Keywords: | Cadmium compounds; Elementary particle sources; II-VI semiconductors; Light sources; Nanocrystals; Particle beams; Photons; Quantum optics; Semiconductor quantum dots; Sols; Wave functions, CdSe@CdS; Colloidal quantum dots; Emission statistics; Emissions performance; High-fidelity; Of quantum-information; Quantum information communication; Quantum information processing; Single photon emission; Single-photon source, Zinc sulfide, quantum dot, article; device comparison; excitation; pharmaceutics; photon; probability; radiotherapy |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
| Date Deposited: | 06 Aug 2024 12:20 |
| Last Modified: | 06 Aug 2024 12:20 |
| URI: | http://eprints.iisc.ac.in/id/eprint/85249 |
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