Sachdev studied at the Indian Institute of Technology in Delhi, the Massachusetts Institute of Technology and Harvard University. He is now the Herchel Smith Professor of Physics at Harvard University. His research describes the connection between physical properties of modern quantum materials and the nature of quantum entanglement in the many-particle wavefunction. He has worked extensively on the description of the diverse varieties of entangled states of quantum matter. These include states with topological order, with and without an energy gap to excitations, and critical states without quasiparticle excitations. Many of his theories have been linked to experiments, especially to the rich phase diagrams of the high temperature superconductors.