Marcelo Davanço

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We theoretically investigate the interaction of a single quantum dipole with the modes of a fiber-coupled semiconductor waveguide. Through a combination of tight modal confinement and phase-matched evanescent coupling, we predict that approximately 70% of the dipole's emission can be collected into a single-mode optical fiber. We further show that the(More)
Self-assembled, epitaxially grown InAs/GaAs quantum dots (QDs) are promising semiconductor quantum emitters that can be integrated on a chip for a variety of photonic quantum information science applications. However, self-assembled growth results in an essentially random in-plane spatial distribution of QDs, presenting a challenge in creating devices that(More)
—We demonstrate above 6-dB extinction ratio (ER) improvement by strong external light injection for 20-GHz optical pulses generated from a gain-switched high-speed distributed Bragg reflector (DBR) laser diode. The pulses also exhibit a reduced chirp accompanied with a reduced total root-mean square noise. Above 12-dB pulse ER improvement was further(More)
Radiation pressure has recently been used to effectively couple the quantum motion of mechanical elements to the fields of optical or microwave light. Integration of all three degrees of freedom-mechanical, optical and microwave-would enable a quantum interconnect between microwave and optical quantum systems. We present a platform based on silicon nitride(More)
Monolayers of transition metal dichalcogenide materials emerged as a new material class to study excitonic effects in solid state, as they benefit from enormous Coulomb correlations between electrons and holes. Especially in WSe2, sharp emission features have been observed at cryogenic temperatures, which act as single photon sources. Tight exciton(More)
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