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14 March 2013 A photonic nanowire trumpet for interfacing a quantum dot and a Gaussian free-space mode
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Abstract
Efficient coupling between a localized quantum emitter and a well defined optical channel represents a powerful route to realize single-photon sources and spin-photon interfaces. The tailored fiber-like photonic nanowire embedding a single quantum dot has recently demonstrated an appealing potential. However, the device requires a delicate, sharp needle-like taper with performance sensitive to minute geometrical details. To overcome this limitation we demonstrate the photonic trumpet, exploiting an opposite tapering strategy. The trumpet features a strongly Gaussian far-field emission. A first implementation of this strategy has lead to an ultra-bright single-photon source with a first-lens external efficiency of 0.75 ± 0.1 and a predicted coupling to a Gaussian beam of 0.61 ± 0.08.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Niels Gregersen, Mathieu Munsch, Nitin S. Malik, Joël Bleuse, Emmanuel Dupuy, Adrien Delga, Jesper Mørk, Jean-Michel Gérard, and Julien Claudon "A photonic nanowire trumpet for interfacing a quantum dot and a Gaussian free-space mode", Proc. SPIE 8619, Physics and Simulation of Optoelectronic Devices XXI, 86190Y (14 March 2013); https://doi.org/10.1117/12.2004449
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