Physicists at the University of Nebraska-Lincoln and the University of California at Berkeley used a new method to create halide perovskite in solution. Using it, the researchers obtained exceptionally smooth single-crystal large crystals with great optical homogeneity for the polariton system.
The polariton system uses quantum quasiparticles of half-light and half-matter, exciton-polaritons, as a solid-state analog photon modeling platform for quantum physics, such as studies of the Bose-Einstein condensate and complex XY models.
As the authors of the work note, such modeling has so far only been possible in polaritons operating at ultra-low temperatures (about 270 °C). With the new material, such studies can be conducted at room temperature.
“We show that an XY spin lattice with a large number of coherently coupled condensates can be constructed in the new material as a lattice as large as 10×10,” says Xiang Zhang, president of Hong Kong University and a former UC Berkeley professor who took part in the study.
The physicists note that the solution synthesis method described in the paper allows them to control the thickness of a large sverhodnorodnye perovskite during creation. The new technology, the authors believe, will allow many room-temperature quantum studies without complex and expensive equipment and materials.
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