Highly Pure and Bright Emission of Telecom C-Band Quantum Dots in Circular Bragg Grating Cavities

Raphael Joos,Cornelius Nawrath,Sascha Kolatschek,Stephanie Bauer,Pascal Pruy,Robert Sittig,Ponraj Vijayan,Jiasheng Huang,Michael Jetter,Simone Luca Portalupi,Peter Michler

2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)（2023）

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摘要

Many prospective quantum technology applications, such as for instance quantum communication, rely on the availability of carrier of quantum information. For this purpose, single photons can be used as “flying qubits” encrypting the information for instance in the polarization state [1]. Among other potential candidates for sources of single-photons are semiconductor quantum dots (QDs) which can provide high photon rates and scalable infrastructure using photonic integrated circuits. Especially QD emission with wavelength in the telecom C-band is highly sought-after for applications due to the low transmission loss in fibers and free space as well as the compatibility to the well-developed silicon photonics platform.

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关键词

bright emission,circular Bragg grating cavities,excitation rate,flying qubits,InGaAs/ss,instance quantum communication,metamorphic buffer layer,photonic integrated circuits,polarization state,Purcell enhancement,QD emission,quantum information,quasiresonant excitation,semiconductor quantum dots,silicon photonics platform,single-photon count rate,single-photon emission,telecom C-band quantum dots,telecom C-band triggered single-photon sources,temperature 40 K,transmission loss

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