Articles with "site controlled" as a keyword



Single photon extraction and propagation in photonic crystal waveguides incorporating site-controlled quantum dots

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Published in 2018 at "Applied Physics Letters"

DOI: 10.1063/1.5007935

Abstract: Deterministic integration of site-controlled quantum dots with photonic crystal waveguides is demonstrated, which allows positioning the dots for optimal overlap with the waveguide modes. The coupling efficiency (β-factor) of quantum dot emission to propagating waveguide… read more here.

Keywords: crystal waveguides; controlled quantum; photonic crystal; site controlled ... See more keywords

Carrier dynamics in site-controlled InGaAsN:H/GaAs quantum disks

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Published in 2025 at "Journal of Applied Physics"

DOI: 10.1063/5.0273700

Abstract: Hydrogenation of InGaAsN can be employed to fabricate site-controlled quantum structures with bandgap energies at the low-loss telecommunication window. In this work, laser pulse energy- and temperature-dependent photoluminescence and time-resolved photoluminescence optical spectroscopy techniques are… read more here.

Keywords: carrier; site controlled; carrier dynamics; quantum disks ... See more keywords

Optical pumping and initialization of a hole spin in site-controlled InGaAs pyramidal quantum dots

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Published in 2025 at "Physical Review B"

DOI: 10.1103/fps4-vb8c

Abstract: We characterize site-controlled In0.25Ga0.75As quantum dots in (111)B GaAs pyramidal recesses as a platform for spin qubit implementation. By combining scanning confocal cryomicroscopy, magnetophotoluminescence studies, and resonant excitation, we identify and isolate a positively charged… read more here.

Keywords: hole spin; site controlled; spin; quantum dots ... See more keywords

Site-Controlled Quantum Emitters in Dilute Nitrides and their Integration in Photonic Crystal Cavities

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Published in 2018 at "Photonics"

DOI: 10.3390/photonics5020010

Abstract: We review an innovative approach for the fabrication of site-controlled quantum emitters (i.e., single-photon emitting quantum dots) based on the spatially selective incorporation and/or removal of hydrogen in dilute nitride semiconductors (e.g., GaAsN). In such… read more here.

Keywords: dilute nitrides; controlled quantum; quantum emitters; site controlled ... See more keywords