Moiré excitons: From programmable quantum emitter arrays to spin-orbit–coupled artificial lattices

Highly uniform and ordered nanodot arrays are crucial for high-performance quantum optoelectronics, including new semiconductor lasers and single-photon emitters, and for synthesizing artificial lattices of interacting quasiparticles toward quantum information processing and simulation of many-body physics. Van der Waals heterostructures of two-dimensional semiconductors are naturally endowed with an ordered nanoscale landscape, that is, the moiré pattern that laterally modulates electronic and topographic structures. We find that these moiré effects realize superstructures of nanodot confinements for long-lived interlayer excitons, which can be either electrically or strain tuned from perfect arrays of…

• UD
  U.S. Department of Energy

  Awards: SC0012509, DE-SC0008145
• CF
  Croucher Foundation

  Awards: award347254, AoE/P-04/08
• NN
  National Natural Science Foundation of China

  Awards: 11304014, Grant No. 11304014, award347258
• UO
  University of Hong Kong

  Award: award347257
• NK
  National Key Research and Development Program of China

  Award: 2013CB934500
• BE
  Basic Energy Sciences

  Awards: SC0012509, DE-SC0008145