Westerberg, N. , Wilson, K. E., Duncan, C. W., Faccio, D. , Wright, E. M., Öhberg, P. and Valiente, M. (2018) Self-bound droplets of light with orbital angular momentum. Physical Review A: Atomic, Molecular and Optical Physics, 98(5), 053835. (doi: 10.1103/PhysRevA.98.053835)
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Abstract
Systems with competing attractive and repulsive interactions have a tendency to condense into droplets. This is the case for water in a sink, liquid helium, and dipolar atomic gases. Here we consider a photon fluid which is formed in the transverse plane of a monochromatic laser beam propagating in an attractive (focusing) nonlocal nonlinear medium. In this setting we demonstrate the formation of the optical analog of matter-wave droplets and study their properties. The system we consider admits droplets that carry orbital angular momentum. We find bound states possessing liquidlike properties, such as bulk pressure and compressibility. Interestingly, these droplets of light, as opposed to optical vortices, form due to the competition between long-range s -wave (monopole) and d -wave (quadrupole) interactions as well as diffraction.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Faccio, Professor Daniele and Westerberg, Dr Niclas |
Authors: | Westerberg, N., Wilson, K. E., Duncan, C. W., Faccio, D., Wright, E. M., Öhberg, P., and Valiente, M. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review A: Atomic, Molecular and Optical Physics |
Publisher: | American Physical Society |
ISSN: | 1050-2947 |
ISSN (Online): | 1094-1622 |
Published Online: | 21 November 2018 |
Copyright Holders: | Copyright © 2018 American Physical Society |
First Published: | First published in Physical Review A: Atomic, Molecular and Optical Physics 98(5): 053835 |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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