[1] Before joining IACS he was a research fellow in Harish Chandra Research Institute, Allahabad, and associate professor in Saha Institute of Nuclear Physics, Kolkata.
He received his PhD from University of Maryland at College Park and MSc degree from Indian Institute of Technology, Kharagpur.
[citation needed] His research interests include physics of strong correlations in ultracold atoms, quantum phase transitions, physics of graphene, topological insulators and Weyl semimetals, unconventional superconductivity, and quantum hall effect.
In recent years, his main research focus has involved developing theoretical understanding of periodically driven closed quantum systems, with emphasis on phenomena such as topological properties of such driven states, dynamical transitions in these driven systems and possible routes to violation of Eigenstate Thermalization Hypothesis (ETH) in them.
He has served as a council member of Asia Pacific Centre for Theoretical Physics.