A Coordenadoria de Pós-Graduação do IFGW tem a satisfação de convidar para o próximo colóquio:

Título: Semiconductor Quantum Dots for quantum science and technology

Palestrante: Prof. Armando Rastelli - Johannes Kepler University Linz, Áustria

Data: 01/10/2026

Horário:16h

Local: Auditório do IFGW

Resumo:

Emerging photonic quantum technologies require the development of high-performance sources of quantum light. Among different platforms, self-assembled quantum dots (QDs) have demonstrated excellent performance both as quantum emitters as well as hosts of qubits. Under optimized conditions, the QDs have high in-plane symmetry, good ensemble homogeneity, high oscillator strengths, and high optical quality, especially when embedded in charge-tunable diode structures. These properties make them particularly suited for the generation of polarization-entangled photon pairs. To make sure the QDs fulfil at the same time criteria of maximal brightness, desired emission wavelength and charge state, it is necessary to integrate them into photonic devices, which ideally display a high degree of tunability. In this talk, we will present recent results on an electrically tunable source of highly entangled photon pairs and indistinguishable single photons based on a GaAs QDs deterministically embedded in electrically controlled optical resonators and discuss challenges and perspectives.

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