AI 中文总结
本研究在三层石墨烯系统中观测到三分层层间相干激子凝聚，利用WSe₂的里德堡激子探针证实三对层均存在激子凝聚通道，为探索高阶量子霍尔序提供了可编程合成维度。
AI 中文摘要
增加量子多体系统的内部组分数可产生简单系统无法实现的集体序。量子霍尔双层结构是层间激子凝聚的典型实现，但将这种相干性扩展到三个可独立寻址的电子流体仍难以实现。本文报道了三层石墨烯系统中三分层层间相干激子凝聚的证据。使用相邻WSe₂单层中的里德堡激子作为层敏感光学探针，我们在所有三对层组合的第零朗道能级交叉处分辨出相互作用诱导的不可压缩性，在同一器件中建立了顶层-中层、中层-底层和顶层-底层的激子凝聚通道。通过独立控制位移场和层间偏置，可将这些成对状态连续调谐至三层的朗道能级同时趋近简并的区域。在它们收敛时，不可压缩性持续存在，同时激子能量和谱权重在成对极限之间平滑演化，表明所有三层共同参与单一三分层状态。更广泛而言，独立控制层电势和工程化层间相互作用的能力，确立了多层石墨烯作为可编程合成维度，用于探索更高组分的量子霍尔序和模拟强关联量子物质。
英文摘要
Increasing the number of internal components in a quantum many-body system can host collective orders inaccessible to simpler settings. Quantum Hall bilayers provide a canonical realization of interlayer exciton condensation, yet extending such coherence across three independently addressable electronic fluids has remained elusive. Here we report evidence for three-component interlayer coherent exciton condensation in triple-layer graphene system. Using Rydberg excitons in an adjacent WSe2 monolayer as a layer-sensitive optical probe, we resolve interaction-induced incompressibility at zeroth-Landau-level crossings for all three pairwise layer combinations, establishing top-middle, middle-bottom and top-bottom exciton condensate channels within the same device. Independent control of displacement field and interlayer bias continuously tunes these pairwise states towards a regime where Landau levels from all three layers approach simultaneous degeneracy. At their convergence, incompressibility persists while the exciton energy and spectral weight evolve smoothly between the pairwise limits, suggesting coherent participation of all three layers in a single three-component state. More broadly, the ability to independently control layer potentials and engineer interlayer interactions establishes multilayer graphene as a programmable synthetic dimension for exploring higher-component quantum Hall order and simulating strongly correlated quantum matter.
Comments22 pages and 4 figures
