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We show unidirectional emission of a single Q-dot by coupling to a nanofabricated Yagi-Uda antenna. The Q-dot drives the resonant feed element and 82% of the Q-dot emission is emitted in a 12° HWHM angle.
Optical antennas are the counterparts of conventional radio frequency and microwave antennas for frequencies in the visible regime (-500 THz) [1]. They localize optical fields to sub-diffraction-limited volumes, enhance and redirect the excitation and emission of quantum emitters [2] as well as modify their spectra. They open up exciting opportunities in a wide range of fields including nonlinear...
The momentum transfer to a scatterer from Raman photons was detected using an optical system that permits one to simultaneously measure the radiation forces exerted on, and the Raman emission from the scatterer.
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