期刊
PHYSICAL REVIEW B
卷 89, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.134501
关键词
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资金
- Quandyde project of the ANR France
- POLATOM ESF Research Network Program
- CLERMONT4 Network Progam
- program Ramon y Cajal and Intelbiomat (ESF)
- program EPSRC [EP/I028900/1]
- EPSRC [EP/I028900/1, EP/I028900/2] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I028900/2, EP/I028900/1] Funding Source: researchfish
Topological defects such as quantized vortices are one of the most striking manifestations of the superfluid nature of Bose-Einstein condensates and typical examples of quantum mechanical phenomena on a macroscopic scale. Here we demonstrate the formation of a lattice of vortex-antivortex pairs and study its properties in the nonlinear regime at high polariton-density where polariton-polariton interactions dominate the behavior of the system. In this work first we demonstrate that the array of vortex-antivortex pairs can be generated in a controllable way in terms of size of the array and in terms of size and shape of its fundamental unit cell. Then we demonstrate that polariton-polariton repulsion can strongly deform the lattice unit cell and determine the pattern distribution of the vortex-antivortex pairs, reaching a completely new behavior with respect to geometrically generated vortex lattices whose shape is determined only by the geometry of the system.
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