Dear all,
Masoud Mohseni, who is going to join our group in October as a
postdoctoral researcher is going to talk this Friday at 4 PM at Harvard.
Please forward to anybody interested.
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Dr. Masoud Mohseni
(University of Toronto and University of Southern California)
Friday, August 25th, 4:00 PM,
Harvard University
Department of Chemistry and Chemical Biology
Mallinckrodt Building, 12 Oxford Street, Room M114
Direct Characterization of Quantum Dynamics
The characterization of quantum dynamics is a fundamental task in
quantum mechanics, that can be accomplished via quantum process
tomography (QPT). We present a general theory for direct and complete
characterization of quantum dynamics of an open quantum system. In
contrast to all known QPT schemes, our method relies on
error-detection techniques and does not require any quantum state
tomography. By analysis of the number of necessary experimental
configurations and quantum operations in a given Hilbert space, we
demonstrate that our approach is more efficient than all existing QPT
schemes. We also provide a discussion of its possible physical
realizations and illustrate its advantage in partial characterization
of quantum dynamics. Specifically, we demonstrate that our scheme can
be efficiently used for Hamiltonian identification, and also for
simultaneous determination of both the relaxation time T1 and
dephasing time T2.
--
Alán Aspuru-Guzik
Assistant Professor
Department of Chemistry and Chemical Biology
12 Oxford Street
Harvard University
Cambridge, MA 02138
Tel: (617)384-8188
Group URL:
http://aspuru.chem.harvard.edu