Debayan studied at Presidency College in India as an undergrad. Then he received his Master's from École Polytechnique in France and PhD from Princeton University. For his PhD, he built a lithium quantum gas microscope and studied the Fermi-Hubbard model. As a postdoc at Harvard, he worked on laser cooling of polyatomic molecules like CaOH, CaOCH3 and CaO-phenol using cryogenic buffer gas sources. He has been a researcher with ZLab since August 2021, currently working on laser cooling, trapping and dissociation of CaH molecules.