Remote optical addressing of single nano-objects

Details Remote optical addressing of single nano-objects Remote optical addressing of single nano-objects

2006-12-22

arxiv.org/abs/physics/0612218v1

Europhys. Lett. 64, 634 (2003)

Physics

Optics

Scientific paper

10.1209/epl/i2003-00275-y

We present a scheme for remotely addressing single nano-objects by means of near-field optical microscopy that makes only use of one of the most fundamental properties of electromagnetic radiation: its polarization. A medium containing optically active nano-objects is covered with a thin metallic film presenting sub-wavelength holes. When the optical tip is positioned some distance away from a hole, surface plasmons in the metal coating are generated which, by turning the polarization plane of the excitation light, transfer the excitation towards a chosen hole and induce emission from the underlying nano-objects. The method, easily applicable to other systems, is demonstrated for single quantum dots (QDs) at low temperature. It may become a valuable tool for future optical applications in the nanoworld.

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