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charge control 1circular bragg grating 1photon extraction efficiency 1purcell enhancement 1quantum dots 1single-photon source 1

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cond-mat.mes-hall2026

Purcell enhanced and blinking free single photons from InAs/GaAs quantum dots in deterministically placed circular Bragg gratings

Peter Gschwandtner, Quirin Buchinger, Krishna Chand Maurya +11

The paper demonstrates a bright, charge‑tunable, blinking‑free single‑photon source based on InAs quantum dots embedded in a p‑i‑n GaAs membrane and coupled to a modified circular…