Berlin 2024 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 18: Poster II
QI 18.7: Poster
Mittwoch, 20. März 2024, 11:00–14:30, Poster A
Ideal Single Photon Sources at Telecom Wavelengths — •Jonas Grammel1, Julian Maisch2, Nam Tran2, Simone Luca Portalupi2, Peter Michler2, and David Hunger1 — 1Physikalisches Institut, Karlsruher Institut für Technologie — 2Institut für Halbleiteroptik und Funktionelle Grenzflächen, Universität Stuttgart
Semiconductor single photon sources are fundamental building blocks for quantum information applications. The current limitations of such quantum dot sources are the emitting wavelength and insufficient collection efficiency in fiber-based implementations. In the project Telecom Single Photon Sources we aim to realize high brightness, fiber coupled sources of single and indistinguishable photons at the telecom wavelength for the upcoming realization of fiber-based quantum networks. We employ open cavities realized with fiber-based mirrors, in combination with InGaAs quantum dots emitting in the telecom O-band and C-band. We improve the photon indistinguishability, with prospect to achieve the limit of Fourier-limited photons, by utilizing the lifetime reduction of the emitters via the Purcell effect.
Keywords: Telecom Quantum Dots; Microcavity; Single Photon Source; Fibertechnology; Scanning Cavity Microscopy