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HL: Fachverband Halbleiterphysik
HL 39: Materials and devices for quantum technology II
HL 39.7: Vortrag
Mittwoch, 18. März 2020, 11:45–12:00, POT 112
Purcell enhancement in hemispherical Fabry-Perot fiber-microcavities with InAs-QDs — •Sascha Böhrkircher1, Steffen Both1, Thomas Herzog2, Michael Jetter2, Simone Luca Portalupi2, Peter Michler2, and Thomas Weiss1 — 14th Physics Institute and Research Center SCoPE, University of Stuttgart, 70550, Stuttgart, Germany — 2Institut für Halbleiteroptik und Funktionelle Grenzflächen (IHFG), Center for Integrated Quantum Science and Technology (IQST ) and SCoPE, University of Stuttgart, D-70569 Stuttgart, Germany
The Purcell effect is responsible for the modification of spontaneous emission rate of quantum emitters when embedded and resonant with cavities. Recent investigations of quantum-dot (QD) transitions in Fabry-Perot-based fiber microcavities demonstrate clearly the presence of Purcell enhancement [1]. That depends significantly on the resonant states of the cavity and their capability to couple to the QD. We discuss possible limitations of calculating these resonant states within the paraxial approximation [2] by comparing the results with finite-element simulations, and we provide design rules for an optimal Purcell enhancement.
[1] T. Herzog et al. , Quantum Sci. Technol. 3 034009 (2018)
[2] Dustin Kleckner et al. , Phys. Rev. A, 81 043814 (2010)