Solid-state cavity quantum electrodynamics systems will form scalable nodes of future quantum networks, allowing the storage, processing and retrieval of quantum bits, where a real-time control of the radiative interaction in the cavity is required to achieve high efficiency. We demonstrate here the dynamic molding of the vacuum field in a coupled-cavity system to achieve the ultrafast nonlocal modulation of spontaneous emission of quantum dots in photonic crystal cavities, on a timescale of ~200 ps, much faster than their natural radiative lifetimes. This opens the way to the ultrafast control of semiconductor-based cavity quantum electrodynamics systems for application in quantum interfaces and to a new class of ultrafast lasers based on nano-photonic cavities.
@article{arxiv.1311.2233,
title = {Ultrafast nonlocal control of spontaneous emission},
author = {Chao-Yuan Jin and Robert Johne and Milo Y. Swinkels and Thang B. Hoang and Leonardo Midolo and Peter J. van Veldhoven and Andrea Fiore},
journal= {arXiv preprint arXiv:1311.2233},
year = {2014}
}