Phys.org January 12, 2023
Room temperature polariton condensate lattices, suitable candidates for neuromorphic computing and physical simulations of complex problems, have been achieved by nanoimprinting microcavities, which by nature lacks the crucial tunability required for realistic reconfigurable simulators. An international team of researchers (UK, Singapore)
has made a quantum harmonic oscillator at room temperature by an on-the-fly fully tunable optical approach. The condensate is delocalised from the excitation region by macroscopic distances, leading both to longer coherence and a threshold one order of magnitude lower than that with a conventional Gaussian excitation profile. They observed different mode selection behaviour compared to inorganic materials, which highlighted the anomalous scaling of blueshift with pump intensity and the presence of sizeable energy-relaxation mechanisms. According to the researchers their work is a major step towards a fully tunable polariton simulator at room temperature…read more. Open Access TECHNICAL ARTICLE
Schematic structure and characterisation of one-dimensional trapping. Credit: Nature Communications volume 13, Article number: 7191 (2022)Â Â