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Journal Article
Ultrafast non-local control of spontaneous emission
2014
Overview
Non-local moulding of the vacuum field in a photonic cavity structure enables control of the spontaneous emission of quantum dots.
The radiative interaction of solid-state emitters with cavity fields is the basis of semiconductor microcavity lasers and cavity quantum electrodynamics (CQED) systems
1
. Its control in real time would open new avenues for the generation of non-classical light states, the control of entanglement and the modulation of lasers. However, unlike atomic CQED or circuit quantum electrodynamics
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,
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,
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,
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,
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, the real-time control of radiative processes has not yet been achieved in semiconductors because of the ultrafast timescales involved. Here we propose an ultrafast non-local moulding of the vacuum field in a coupled-cavity system as an approach to the control of radiative processes and demonstrate the dynamic control of the spontaneous emission (SE) of quantum dots (QDs) in a photonic crystal (PhC) cavity on a ∼200 ps timescale, much faster than their natural SE lifetimes.
Publisher
Nature Publishing Group UK,Nature Publishing Group
