The OUSUMS lab at the Department of Physics, IISc Bangalore, explores the optical and quantum properties of two-dimensional (2D) van der Waals materials. Using ultrafast and steady-state optical spectroscopy, vapour deposition synthesis, and electron microscopy, we probe carrier and exciton dynamics in moiré heterostructures, 2D semiconductors and magnets, and quantum emitter systems. Our work bridges fundamental condensed matter physics and applications in quantum technology and opto-electronics.

Ultrafast Optical Spectroscopy

Measure coupling and fundamental carrier dynamics.

CVD Synthesis

Synthesize non-naturally occurring materials leading to advances in opto-electronics and quantum computing.

2D+2D=2D

Play lego in material science. Stack and see them go.

Electron Microscopy

Watch atoms and structure through electrons, and measure nanoscale optical properties.

Latest Papers

Quantum siphoning of finely spaced interlayer excitons in reconstructed MoSe₂/WSe₂ heterostructures

Signatures of moiré intralayer biexcitons and exciton-phason coupling in WSe₂/WS₂

Quantification of 2D Interfaces via Nanobubble Formation

Quantum Light Generation via Ultra-Low Energy Electron Irradiation

Tailored Vapor Deposition Unlocks Large-Grain, Wafer-Scale Epitaxial Growth of 2D Magnetic CrCl₃

Critical Role of Precursor Flux in Modulating Nucleation Density in 2D Material Synthesis Revealed by Digital Twin

Towards a comprehensive understanding of the low energy luminescence peak in 2D materials

Evidence of defect formation in monolayer MoS2 at ultralow accelerating voltage electron irradiation

Optical Microscope Based Universal Parameter for Identifying Layer Number in Two-Dimensional Materials

Lab News