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Electrically controlled topological defects in liquid crystals as tunable spin-orbit encoders for photons

2011; Optica Publishing Group; Volume: 36; Issue: 5 Linguagem: Inglês

10.1364/ol.36.000719

1539-4794

Etienne Brasselet, Charles Loussert,

Quantum Information and Cryptography

We demonstrate experimentally that topological defects of vertically aligned nematic liquid crystal films induced by electric fields can be used as highly efficient natural optical spin-orbit encoders that do not need machining techniques. Moreover, we show that both the operating wavelength and operation mode of such natural quantum optical interfaces can be tuned in real time using low-voltage electric fields.