Optical Control of Couplings in Polariton Condensate Lattices
| Autor: | Helgi Sigurdsson, Sergey Alyatkin, Julian D. Töpfer, Alexis Askitopoulos, Pavlos G. Lagoudakis |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Condensed Matter::Quantum Gases
Coupling Physics Condensed matter physics Condensed Matter::Other Exciton Physics::Optics General Physics and Astronomy 01 natural sciences Square lattice Ferromagnetism Optical control 0103 physical sciences Polariton Antiferromagnetism Particle flow 010306 general physics |
| Zdroj: | Physical Review Letters. 124 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.124.207402 |
| Popis: | We demonstrate deterministic control of the nearest and next-nearest neighbor coupling in the unit cell of a square lattice of microcavity exciton-polariton condensates. We tune the coupling in a continuous and reversible manner by optically imprinting potential barriers of variable height, in the form of spatially localized incoherent exciton reservoirs that modify the particle flow between condensates. By controlling the couplings in a 2×2 polariton cluster, we realize ferromagnetic, antiferromagnetic, and paired ferromagnetic phases and demonstrate the potential scalability of the system. |
| Databáze: | OpenAIRE |
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