Optically Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum Fluid

S. M.H. Luk, N. H. Kwong, P. Lewandowski, S. Schumacher, R. Binder

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Abstract

Applications of the orbital angular momentum (OAM) of light range from the next generation of optical communication systems to optical imaging and optical manipulation of particles. Here we propose a micron-sized semiconductor source that emits light with predefined OAM pairs. This source is based on a polaritonic quantum fluid. We show how in this system modulational instabilities can be controlled and harnessed for the spontaneous formation of OAM pairs not present in the pump laser source. Once created, the OAM states exhibit exotic flow patterns in the quantum fluid, characterized by generation-annihilation pairs. These can only occur in open systems, not in equilibrium condensates, in contrast to well-established vortex-antivortex pairs.

Original languageEnglish (US)
Article number113903
JournalPhysical review letters
Volume119
Issue number11
DOIs
StatePublished - Sep 15 2017

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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