Nanophotonics

Quantum light from a nanoantenna

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Science  22 Nov 2019:
Vol. 366, Issue 6468, pp. 967-968
DOI: 10.1126/science.366.6468.967-f

Antennas are crucial components in wireless communication, allowing information to be transferred between senders and receivers. Recent developments have seen nanometer-scale optical antennas that allow for the efficient extraction of photons, plucking them out of a light beam and funneling them into the circuits of an optical chip or waveguide, and vice versa. Using a nanoantenna comprising an aluminium gallium arsenide (AlGaAs) nanocylinder, Marino et al. demonstrate the generation of photon pairs as the structure is excited by a pump laser. Antennas that can also be used as quantum light sources provide a useful route toward developing an integrated platform for quantum communication and sensing.

Optica 6, 1416 (2019).

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