Unveiling spin-flip processes in a neutral quantum dot using an anisotropic photonic structure

Autor: Romain Fons, Saptarshi Kotal, Alberto Artioli, Joël Bleuse, Jean-Michel Gérard, Julien Claudon

Publikováno v: Physical Review B
Physical Review B, 2022, 105 (11), pp.115308. ⟨10.1103/PhysRevB.105.115308⟩

International audience; We introduce a method to investigate excitonic spin flips in a neutral quantum dot (QD) that is drivennonresonantly. By inserting the QD in an anisotropic photonic structure, one creates an imbalance between theradiative decay

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a928b816095a2f5404fb8d873ebd8acb
https://hal.science/hal-03955908

Nanowire single-photon sources: mechanics matters (Conference Presentation)

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

Publikováno v: Nanophotonics VIII.

Tapered nanowire antennas have emerged as a versatile solid-state platform for quantum optics. These broadband photonic structures efficiently funnel the spontaneous emission of an embedded quantum dot into a directive free-space beam. They find appl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b0adb8a5f857e1a28903decc17a7fcd5
https://doi.org/10.1117/12.2557217

Second harmonic generation and wavefront shaping in dielectric metasurfaces

Autor: Giuseppe Leo, Giuseppe Marino, Costantino De Angelis, Jean-Michel Gérard, Davide Rocco, Julien Claudon, Carlo Gigli, Alberto Artioli

Publikováno v: Frontiers in Optics / Laser Science.

We demonstrate an AlGaAs metasurface that implements second harmonic generation with engineered phase-front. Nonlinear holography is obtained, with three-order-of-magnitude higher conversion efficiency than in χ(3) plasmonic metasurfaces.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::982ab77dc6f09f31c9e02154f7a46ae7
https://doi.org/10.1364/fio.2020.fm7e.1

A nanowire optical nanocavity for broadband enhancement of spontaneous emission

Autor: Niels Gregersen, Saptarshi Kotal, Romain Fons, Jean-Michel Gérard, Matteo Finazzer, Y. Genuist, Andreas Dyhl Osterkryger, Joël Bleuse, Julien Claudon, Alberto Artioli, Yujing Wang

Publikováno v: Applied Physics Letters
Applied Physics Letters, 2021, 118 (19), pp.194002. ⟨10.1063/5.0045834⟩
Kotal, S, Artioli, A, Wang, Y, Østerkryger, A D, Finazzer, M, Fons, R, Genuist, Y, Bleuse, J, Gérard, J-M, Gregersen, N & Claudon, J 2021, ' A nanowire optical nanocavity for broadband enhancement of spontaneous emission ', Applied Physics Letters, vol. 118, no. 19, 194002 . https://doi.org/10.1063/5.0045834

International audience; To deliver an optimal performance for photonic quantum technologies, semiconductor quantum dots should be integrated in a carefully designed photonic structure. Here, we introduce a nanowire optical nanocavity designed for fre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::086fa0dad3844904a719fe83227abd45
https://doi.org/10.1063/5.0045834

Structure and Morphology in Diffusion-Driven Growth of Nanowires: The Case of ZnTe

Autor: Ruggero Vigliaturo, David Ferrand, Alberto Artioli, M. den Hertog, Régis André, Joel Cibert, Pamela Rueda-Fonseca, Kuntheak Kheng, Eric Robin, Serge Tatarenko, Edith Bellet-Amalric, Y. Genuist, P. Stepanov

Publikováno v: Nano Letters
Nano Letters, American Chemical Society, 2014, 14 (4), pp.1877-1883. ⟨10.1021/nl4046476⟩
Nano Letters, 2014, 14 (4), pp.1877-1883. ⟨10.1021/nl4046476⟩

International audience; Gold-catalyzed ZnTe nanowires were grown at low temperature by molecular beam epitaxy on a ZnTe(111) B buffer layer, under different II/VI flux ratios, including with CdTe insertions. High-resolution electron microscopy and en

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8a67de33273ac95fdbd33e4c6e8f464
https://doi.org/10.1021/nl4046476