We propose a scheme for producing and manipulating quantized exciton-polariton vortices in the higher-order topological corner modes of a two-dimensional array of micropillars. By nonresonantly exciting p-orbital condensates with different orientations at two input corners, polariton vortices carrying the required topological charges can be controllably created at output corners away from the pumping spots. Besides, polariton vortices formed at input corners can be copied to the output corners through the topological edge states. Our scheme provides topological double insurance for intrinsic binary information memory and holds potential applications in remote information processing.
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http://dx.doi.org/10.1103/PhysRevLett.133.096901 | DOI Listing |
Phys Rev Lett
August 2024
Department of physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China.
Sci Adv
August 2024
Hybrid Photonics Laboratory, Skolkovo Institute of Science and Technology, Moscow, Territory of innovation center "Skolkovo," Bolshoy Boulevard 30, bld. 1, Moscow 121205, Russia.
Vortices are topologically distinctive objects appearing as phase twists in coherent fields of optical beams and Bose-Einstein condensates. Structured networks and artificial lattices of coupled vortices could offer a powerful platform to study and simulate interaction mechanisms between constituents of condensed matter systems, such as antiferromagnetic interactions, by replacement of spin angular momentum with orbital angular momentum. Here, we realize such a platform using a macroscopic quantum fluid of light based on exciton-polariton condensates.
View Article and Find Full Text PDFPhys Rev Lett
September 2023
Department of Physics, School of Science, Tianjin University, Tianjin 300072, China.
Nano Lett
May 2023
RIKEN Center for Emergent Matter Science, Wako-shi, Saitama 351-0198, Japan.
The rotational response of quantum condensed fluids is strikingly distinct from rotating classical fluids, especially notable for the excitation and ordering of quantized vortex ensembles. Although widely studied in conservative systems, the dynamics of rotating open-dissipative superfluids such as exciton-polariton condensates remains largely unexplored, as it requires high-frequency rotation while avoiding resonantly driving the condensate. We create a rotating polariton condensate at gigahertz frequencies by off-resonantly pumping with a rotating optical stirrer composed of the time-dependent interference of two frequency-offset, structured laser modes.
View Article and Find Full Text PDFSci Rep
March 2023
Spin Optics Laboratory, St. Petersburg State University, Ulyanovskaya 1, St. Petersburg, Russia, 198504.
Concentric ring exciton polariton condensates emerging under non-resonant laser pump in an annular trapping potential support persistent circular currents of polaritons. The trapping potential is formed by a cylindrical micropillar etched in a semiconductor microcavity with embedded quantum wells and a repulsive cloud of optically excited excitons under the pump spot. The symmetry of the potential is subject to external control via manipulation by its pump-induced component.
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