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Title: Tunable polaritonic molecules in an open microcavity system

We experimentally demonstrate tunable coupled cavities based upon open access zero-dimensional hemispherical microcavities. The modes of the photonic molecules are strongly coupled with quantum well excitons forming a system of tunable polaritonic molecules. The cavity-cavity coupling strength, which is determined by the degree of modal overlap, is controlled through the fabricated centre-to-centre distance and tuned in-situ through manipulation of both the exciton-photon and cavity-cavity detunings by using nanopositioners to vary the mirror separation and angle between them. We demonstrate micron sized confinement combined with high photonic Q-factors of 31 000 and lower polariton linewidths of 150 μeV at resonance along with cavity-cavity coupling strengths between 2.5 meV and 60 μeV for the ground cavity state.
Authors:
; ; ; ; ;  [1] ; ;  [2] ; ;  [3]
  1. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom)
  2. Department of Materials, University of Oxford, Oxford OX1 3PH (United Kingdom)
  3. Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE (United Kingdom)
Publication Date:
OSTI Identifier:
22486514
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONFINEMENT; COUPLING; DISTANCE; EXCITONS; LINE WIDTHS; MILLI EV RANGE; MIRRORS; MOLECULES; PHOTONS; QUANTUM WELLS; RESONANCE