Controllable vortex lasing arrays in a geometrically frustrated exciton-polariton lattice at room temperature  

作　　者：Jun Wang Yutian Peng Huawen Xu Jiangang Feng Yuqing Huang Jinqi Wu Timothy C.H.Liew Qihua Xiong 

机构地区：[1]Division of Physics and Applied Physics,School of Physical and Mathematical Sciences,Nanyang Technological University,Singapore 637371,Singapore [2]State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics,Tsinghua University,Beijing 100084,China [3]Beijing Academy of Quantum Information Sciences,Beijing 100193,China [4]Department of Optical Science and Engineering,and Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception,Fudan University,Shanghai 200433,China

出　　处：《National Science Review》2023年第1期191-199,共9页国家科学评论（英文版）

基　　金：Q.X.gratefully acknowledges the funding support from the National Natural Science Foundation of China(12020101003);the Tsinghua University start-up grant;T.C.H.L.acknowledges the support from the Singapore Ministry of Education via the Ac RF Tier 3 Programme‘Geometrical Quantum Materials’(MOE2018-T3-1-002);Ac RF Tier 2 projects(MOE2018-T2-02-068 and MOE2019-T2-1-004);J.W.acknowledges the support from the Shanghai Science and Technology Committee Rising-Star Cultivation Program(22YF1402600);the Young Scientist Project of the China Ministry of Education innovation platform。

摘　　要：Quantized vortices appearing in topological excitations of quantum phase transition play a pivotal role in strongly correlated physics involving the underlying confluence of superfluids,Bose-Einstein condensates and superconductors.Exciton polaritons as bosonic quasiparticles have enabled studies of non-e quilibrium quantum gases and superfluidity.Exciton-polariton condensates in artificial lattices intuitively emulate energy-band structures and quantum many-body effects of condensed matter,underpinning constructing vortex lattices and controlling quantum fluidic circuits.Here,we harness exciton-polariton quantum fluids of light in a frustrated kagome lattice based on robust metal-halide perovskite microcavities,to demonstrate vortex lasing arrays and modulate their configurations at room temperature.Tomographic energy-momentum spectra unambiguously reveal massless Dirac bands and quenched kinetic-energy flat bands coexisting in kagome lattices,where polariton condensates exhibit prototypical honeycomb and kagome spatial patterns.Spatial coherence investigations illustrate two types of phase textures of polariton condensates carrying ordered quantized-vortex arrays andπ-phase shifts,which could be selected when needed using lasing emission energy.Our findings offer a promising platform on which it is possible to study quantum-fluid correlations in complex polaritonic lattices and highlight feasible applications of structured light.

关 键 词：vortex lasing exciton-polariton lattice Bose-Einstein condensation the orbital angular momentum of light geometric frustration perovskite semiconductor 

分 类 号：O469[理学—凝聚态物理]