TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed)
A1  - Rota, Michele B.
A1  - Krieger, Tobias M.
A1  - Buchinger, Quirin
A1  - Beccaceci, Mattia
A1  - Neuwirth, Julia
A1  - Huet, Hêlio
A1  - Horová, Nikola
A1  - Lovicu, Gabriele
A1  - Ronco, Giuseppe
A1  - da Silva, Saimon Filipe
A1  - Pettinari, Giorgio
A1  - Moczala-Dusanowska, Magdalena
A1  - Kohlberger, Christoph
A1  - Manna, Santanu
A1  - Stroj, Sandra
A1  - Freund, Julia
A1  - Yuan, Xueyong
A1  - Schneider, Christian
A1  - Jezek, Miroslav
A1  - Höfling, Sven
A1  - Basso Basset, Francesco
A1  - Huber-Loyola, Tobias
A1  - Rastelli, Armando
A1  - Trotta, Rinaldo
T1  - A source of entangled photons based on a cavity-enhanced and strain-tuned GaAs quantum dot
T2  - Arxiv, quant-ph
N2  - A quantum-light source that delivers photons with a high brightness and a high degree of entanglement is fundamental for the development of efficient entanglement-based quantum-key distribution systems. Among all possible candidates, epitaxial quantum dots are currently emerging as one of the brightest sources of highly entangled photons. However, the optimization of both brightness and entanglement currently requires different technologies that are difficult to combine in a scalable manner. In this work, we overcome this challenge by developing a novel device consisting of a quantum dot embedded in a circular Bragg resonator, in turn, integrated onto a micromachined piezoelectric actuator. The resonator engineers the light-matter interaction to empower extraction efficiencies up to 0.69(4). Simultaneously, the actuator manipulates strain fields that tune the quantum dot for the generation of entangled photons with fidelities up to 0.96(1). This hybrid technology has the potential to overcome the limitations of the key rates that plague current approaches to entanglement-based quantum key distribution and entanglement-based quantum networks. Introduction
Y1  - 2022
U6  - https://doi.org/10.48550/arXiv.2212.12506
DO  - https://doi.org/10.48550/arXiv.2212.12506
SP  - 26
S1  - 26
ER  -