Tunable polaritonic molecules in an open microcavity system
- Department of Materials, University of Oxford, Oxford OX1 3PH (United Kingdom)
- Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE (United Kingdom)
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.
- OSTI ID:
- 22486514
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 107; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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