Polarization-dependent light-matter coupling and highly indistinguishable resonant fluorescence photons from quantum dot-micropillar cavities with elliptical cross section

Stefan Gerhardt, Michael Deppisch, Simon Betzold, Tristan H. Harder, Timothy C. H. Liew, Ana Predojević, Sven Höfling, Christian Schneider

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We study the optical properties of coupled quantum dot-microcavity systems with elliptical cross section. First, we develop an analytic model that describes the spectrum of the cavity modes that are split due to the reduced symmetry of the resonator. By coupling the QD emission to the polarized fundamental cavity modes, we observe the vectorial nature of the Purcell enhancement, which depends on the intrinsic polarization of the quantum dot and its relative alignment with respect to the cavity axis. The variable interaction strength of the QD with the polarized cavity modes leads to the observation of strong and weak coupling. Finally, we demonstrate the capability of elliptical micropillars to emit single and highly indistinguishable photons (visibility of 87%).
Original languageEnglish
Article number115305
Number of pages11
JournalPhysical Review. B, Condensed matter and materials physics
Volume100
Issue number11
Early online date4 Sept 2019
DOIs
Publication statusPublished - 15 Sept 2019

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