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Resonant plasmonic metal nanoparticles allow manipulating optical fields on the nanoscale. In analogy to the radio frequency domain such particles are called optical antennas. They have led to a multitude of breakthroughs, e.g., in enhancement of light emission and radiation engineering of single photons, as well as ultrasensitive sensing. I will present the results of our work on enhancing the optical properties of single solid-state quantum emitters using optical antennas and on applying plasmonic nanoantennas in point-to-point links. Coupling a quantum emitter to the antenna allows enhancing both its absorption efficiency as well as emission rate. Meanwhile, point-to-point links based on optical antennas are a promising concept to transmit optical signals between nano-objects. I will show the first realization of such a link.

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Klas Lindfors, Universität zu Köln
Seminar Room of the Institute of Physics II (R201)
Contact: not specified