·        M.S. Physics, Kiev State University (Ukraine), 1992

·        Ph.D Physics, University of Toledo (USA), 1997

·        Postdoctoral Research:

o       Department of Chemistry, University of Rochester, 1997–2000

o       Department of Chemistry, University of Wisconsin-Madison, 2000–2002

o       Center for Nonlinear Studies/T-12, Los Alamos National Laboratory, 2002–2006

·        T-14 Technical Staff Member, Los Alamos National Laboratory, 2006–present

Research Interests:

• Photoexcited processes in semiconductor nanostructures
• Photoexcited vibrational dynamics in biomolecules, polymers, and metal complexes
• Quantum/Semiclassical molecular dyanamics simulations
• Ultrafast nonlinear (multidimensional) spectroscopy

Selected Recent Publications:

1. V. I. Klimov, S. A. Ivanov, J. Nanda, M. Achermann, I. Bezel, J. A. McGuire, and A. Piryatinski Single-exciton optical gain in semiconductor nanocrystals. Nature  447, 441 (2007)
2. A. Piryatinski, S. A. Ivanov, S. Tretiak, and V. I. Klimov Effect of Quantum and Dielectric Confinement on the Exciton-Exciton Interaction Energy in Type II Core/Shell Semiconductor Nanocrystals. Nano Letters. 7,108 (2007)
3. A. Piryatinski, M. Stepanov, S. Tretiak, and V. Chernyak, Semiclassical Scattering on Conical Intersections. Phys. Rev. Lett.  95, 223001 (2005)
4. A. Piryatinski, S. Tretiak, P.W. Fenimore, A. Saxena, R.L. Martin, and A.R. Bishop, Three-pulse photon-echo spectroscopy as a probe of photoexcited electronic state manifold in coupled electron-phonon systems. Phys. Rev. B  95,161404(R) (2004)
5. A. Piryatinski, C.P. Lawrence, and J.L. Skinner, Vibrational Spectroscopy of HOD in Liquid D2O. V. Infrared Three-Pulse Photon Echo. J. Chem. Phys.  118, 9672 (2003).
6. A. Piryatinski, V. Chernyak, and S. Mukamel, Two-Dimensional Coherent Infrared Spectroscopy of Vibrational Excitons in Polypeptides. pp. 349-382, in Ultrafast Infrared and Raman Spectroscopy, ed. M. D. Fayer   (Marcel Dekker, New York, 2001).