Ranjan Singh is an Indian scientist and currently an Associate Professor at Nanyang Technological University (NTU) Singapore. He received B. Eng. in Telecommunications from Bangalore University (2001), M. Tech in Photonics from Cochin University (2004), and a Ph. D. in Photonics from Oklahoma State University (2009). During 2009-2013, he was a postdoc at the Los Alamos National Laboratory. He founded TeraX Labs in 2013 at the Division of Physics, NTU Singapore. He is an elected fellow of OPTICA (OSA) for making pioneering contributions in the field of ultrafast terahertz photonics, active metamaterials, and sensors. His current research interests include terahertz (THz) electronic-photonic hybrid technologies for 6G communications and beyond, intelligent metasurfaces for beamforming, THz topological photonics, THz spintronics, quantum materials, high-Tc superconductors, and chalcogenide micro-nanophotonics. He has raised US$ 12M in competitive external research grants, including a US $7M to develop on-chip terahertz topological photonics for 6G communication (TERACOMM). He was listed as the top 1% highly cited researcher by the web of science in 2020.