Krupa Ramasesha is a principal investigator at Sandia National Laboratories in Livermore, California, where she is leading a research program investigating ultrafast dynamics in the gas and condensed phases as well as at interfaces. Research in her group explores photoinduced energy transfer and excited-state dynamics governing bond dissociation, conformational changes, and charge transfer on femtosecond to picosecond time scales. Their work spans the fields of gas-phase photophysics and photochemistry, charge- and energy-transfer dynamics across plasmonic metal-molecule interfaces, and electronic and vibrational dynamics in molecular materials such as energetic materials and organic semiconductors. Her group brings to bear multiple experimental tools, including table-top ultrafast soft X-ray spectroscopy, ultrafast electron diffraction, and ultrafast broadband infrared and UV/visible transient absorption spectroscopies.

Krupa received a BS in chemistry from the University of Wisconsin–Madison and a PhD from the Massachusetts Institute of Technology. She performed her postdoctoral work at the University of California, Berkeley, and at Sandia National Laboratories. Krupa's recent honors include the US Department of Energy Early Career Award and the American Chemical Society Physical Chemistry Division Lectureship. She serves on the editorial advisory boards of the Journal of Chemical Physics and the Journal of Physical Chemistry A/B/C.