Design of Quantum Dot-Nanowire Single-Photon Sources that are Immune to Thermomechanical Decoherence

Artioli, Alberto; Kotal, Saptarshi; Gregersen, Niels; Verlot, Pierre; Gérard, Jean-Michel; Claudon, Julien

Abstract

Nanowire antennas embedding a single quantum dot (QD) have recently emerged as versatile platforms to realize bright sources of quantum light. In this theoretical work, we show that the thermally driven, low-frequency vibrations of the nanowire have a major impact on the QD light emission spectrum. Even at liquid helium temperatures, these prevent the emission of indistinguishable photons. To overcome this intrinsic limitation, we propose three designs that restore photon indistinguishability thanks to a specific engineering of the mechanical properties of the nanowire. We anticipate that such a mechanical optimization will also play a key role in the development of other high-performance light-matter interfaces based on nanostructures.

Citation

Artioli, A., Kotal, S., Gregersen, N., Verlot, P., Gérard, J.-M., & Claudon, J. (2019). Design of Quantum Dot-Nanowire Single-Photon Sources that are Immune to Thermomechanical Decoherence. Physical Review Letters, 123(24), Article 247403. https://doi.org/10.1103/physrevlett.123.247403

• Journal Article Type: Article
• Acceptance Date: Oct 16, 2019
• Online Publication Date: Dec 13, 2019
• Publication Date: Dec 13, 2019
• Deposit Date: May 5, 2020
• Publicly Available Date: May 6, 2020
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 123
• Issue: 24
• Article Number: 247403
• DOI: https://doi.org/10.1103/physrevlett.123.247403
• Keywords: General Physics and Astronomy
• Public URL: https://nottingham-repository.worktribe.com/output/3685249
• Publisher URL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.247403
• Additional Information: Alberto Artioli, Saptarshi Kotal, Niels Gregersen, Pierre Verlot, Jean-Michel Gérard, and Julien Claudon, Design of Quantum Dot-Nanowire Single-Photon Sources that are Immune to Thermomechanical Decoherence, Phys. Rev. Lett. 123, 247403.