We are pleased to share our recent publication:

Mondal et al., “Quantum siphoning of finely spaced interlayer excitons in reconstructed MoSe2/WSe2 heterostructures,” Nano Letters 26, 5162 (2026).

DOI: https://pubs.acs.org/doi/full/10.1021/acs.nanolett.6c00578

Layperson Summary

When two atom-thick sheets of material are stacked with a slight twist, they create an interference pattern known as moire patterns, ubiquitous in imaging. Under certain conditions, this pattern can reconstruct into large, uniform regions with similar atomic stacking. We find that quantum confinement in these regions leads to finely spaced energy levels, with over two orders of magnitude lifetime variations. By shining the laser in just the right way, we could trigger population transfer, a process we introduce as quantum siphoning. Our findings reveal that reconstructed systems host rich nonlinear dynamics, and have applications in quantum sensing.