Single photon superradiance enhanced light-matter interaction in spatially ordered shape and volume controlled single quantum dots: enabling on-chip photonic networks.

Lucas Jordao, Swarnabha Chattaraj, Qi Huang, Siyuan Lu, Jiefei Zhang, Anupam Madhukar

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Article in Nanophotonics (Berlin, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Lucas JordaoNanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, CA 90089-0241, USA.ORCID https://orcid.org/0000-0001-8068-1368

Swarnabha ChattarajNanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, CA 90089-0241, USA.

Qi HuangNanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, CA 90089-0241, USA.

Siyuan LuNanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, CA 90089-0241, USA.

Jiefei ZhangNanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, CA 90089-0241, USA.

Anupam MadhukarNanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, CA 90089-0241, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

On-chip photonic networks require adequately spatially ordered matter-photon interconversion qubit sources with emission figures-of-merit exceeding the requirements that would enable the desired functional response of the network. The mesa-top single quantum dots (MTSQDs) have recently been demonstrated to meet these requirements. The substrate-encoded size-reducing epitaxy (SESRE) approach underpinning the realization of these unique quantum emitters allows control on the shape, size, and strain (lattice-matched or mismatched) of these epitaxial single quantum dots. We have exploited this unique feature of the MTSQDs to reproducibly create arrays of quantum dots that exhibit single photon superradiance, a characteristic of the SESRE-enabled delicate balance between the confinement potential volume, depth, the resulting exciton binding energy, and the degree of confinement of the center of mass (CM) motion of the exciton. Scanning transmission electron microscope (STEM) studies reveal the structural (atomic scale) and chemical (nanometer scale) nature of the material region defining the notion of the shape and volume (here large) of the electron confinement region (

Indexed as

molecular beam epitaxyordered quantum dotsquantum information processingscanning transmission electron microscopysingle photon sourcessuperradiance

Identifiers

PMID40995522

DOI10.1515/nanoph-2025-0270

PMCPMC12455285

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