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Entangling a single spin to the polarization of a single incoming photon, generated by an external source, would open new paradigms in quantum optics: this relies on the possibility that a single spin induces a macroscopic rotation of a photon polarization. Up to now, however, the observed polarization rotations were limited to a few 10−3 degrees. Here we report the amplification by three orders of...
A single two-level system constitutes an extremely non-linear optical medium, where the interaction with a first single photon modifies the transmission probability for a second photon. The main difficulty to implement a single photon switch using this property is to ensure that a gate single photon will interact with the quantum emitter with a near-unity probability. In the solid state, all-optical...
Photonic crystal based nanolasers have sprung a lot of interest in the latest years due to the high optical confinement of the cavity. High quality factor cavities in conjunction with low electromagnetical volumes, allows to implement a significant enhancement of the spontaneous emission dynamics and hence a preferential funnelling of spontaneously emitted photons into the laser mode. Theoretical...
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