Atomically thin transition metal dichalcogenides (TMDs) are 2D semiconductors with tightly
bound excitons and correspondingly strong light–matter interactions. Owing to the weak van …

Moiré materials have emerged as a platform for exploring the physics of strong electronic
correlations and non-trivial band topology. Here we review the recent progress in …

Semiconductor moiré superlattices represent a rapidly develo** area of engineered
photonic materials and a new platform to explore correlated electron states and quantum …

Excitonic insulators (EIs) arise from the formation of bound electron–hole pairs (excitons), in
semiconductors and provide a solid-state platform for quantum many-boson physics …

In strongly correlated materials, quasiparticle excitations can carry fractional quantum
numbers. An intriguing possibility is the formation of fractionalized, charge-neutral fermions …

Coupled two-dimensional electron-hole bilayers provide a unique platform to study strongly
correlated Bose-Fermi mixtures in condensed matter. Electrons and holes in spatially …

We introduce density imbalanced electron-hole bilayers at a commensurate 2: 1 density
ratio as a platform for realizing novel phases of electrons, excitons, and trions. Through the …

Strongly coupled two-dimensional electron-hole bilayers can give rise to novel quantum
Bosonic states: electrons and holes in electrically isolated layers can pair into interlayer …

Recent experiments have realized steady-state electrical injection of interlayer excitons in
electron-hole bilayers subject to a large bias voltage. In the ideal case in which interlayer …

Exciton binding energies are fundamental to understanding excitonic materials, especially
those with the potential for ground-state exciton condensation. However, these energies are …