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Quantum antenna and metasurface based on two level systems (Conference Presentation)

Zongfu Yu

Published Nov 9, 2016• 0 citations
Publisher

Abstract

We show that quantum antenna and metasurface can be realized by a cluster of quantum two level systems such as atoms or quantum dots. They offer a new way to dynamically control non-classical light with sophisticated functionalities.
DOI
10.1117/12.2234787

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The classical radio-frequency antenna theory indicates that large cross sections can be realized through directional radiation. In this paper, a similar principle is applied in quantum systems, in which quantum antennas, constructed by a cluster of quantum two-level systems, explore the collective excitation of two-level systems to realize large directivity. Both the optical cross section and the coherent time can be dramatically enhanced in free space, far exceeding the case of a single two-level system.
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