xQIT W. M. Keck Foundation Center For Extreme Quantum Information Theory at the Massachusetts Institute of Technology
News About People Research Publications Events Courses Positions Contact

Conference Homepage



Navin Khanja

Harvard University

Limits on Transmission of Quantum Information in the Presence of Decoherence

November 20, 2008 - 10:50-11:14am

RLE Conference Center 36-428


A fundamental problem in coherent spectroscopy, and quantum information science is to find limits on how close can an open quantum dynamical system be driven to a target state in the presence of dissipation and decoherence and what is the optimal control input that achieves this objective. We describe some new techniques in computing reachable sets of quantum dynamical systems in the presence of decoherence. Application of these methods to design experiments in magnetic resonance that maximize the efficiency of transfer of coherence between spins in multiple spin topologies is discussed.


Navin Khaneja is Professor of Electrical Engineering at Harvard. His broad interests are in problems of dynamics and control, optimization, information, signals and systems. Khaneja earned his undergraduate degree in Electrical Engineering at the Indian Institute of Technology at Kanpur in 1994 and Ph.D. in applied mathematics from Harvard in 2000. After serving for one year as an assistant professor of mathematics at Dartmouth College, he joined the Harvard faculty in 2001 as an assistant professor of electrical engineering, earning advancement to associate professor in 2005. He received the National Science Foundation's CAREER Award in 2001, Alfred P. Sloan Fellowship in 2003, and Humboldt Foundation's Bessel Prize in 2005.