Quantum Process Tomography of Multichromophoric Systems via Ultrafast Spectroscopy

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Quantum Process Tomography of Multichromophoric Systems via Ultrafast Spectroscopy

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Title: Quantum Process Tomography of Multichromophoric Systems via Ultrafast Spectroscopy
Author: Yuen-Zhou, Joel; Mohseni, Masoud; Aspuru-Guzik, Alan

Note: Order does not necessarily reflect citation order of authors.

Citation: Yuen-Zhou, Joel, Masoud Mohseni, and Alán Aspuru-Guzik. 2010. Quantum process tomography of multichromophoric systems via ultrafast spectroscopy. Preprint, Dept. of Chemistry and Chemical Biology, Harvard University.
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Abstract: The description of excited state dynamics in multichromophoric systems constitutes both a theoretical and experimental challenge in modern physical chemistry. An experimental protocol which can systematically characterize both coherent and dissipative processes at the level of the evolving quantum state of the chromophores is desired. In this article, we show that a carefully chosen set of polarization controlled two-color heterodyned photon-echo experiments can be used to reconstruct the time-evolving density matrix of the one-exciton manifold of a heterodimer. This possibility in turn allows for a complete description of the excited state dynamics via quantum process tomography (QPT). Calculations on the dimer show that QPT can reveal rich information about system-bath interactions, which otherwise appear nontrivially hidden in the polarization monitored in standard four-wave mixing experiments. Our study presents a novel method for analyzing condensed phase experiments with a quantum information processing perspective.
Published Version: http://arxiv.org/abs/1006.4866v2
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4657434

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  • FAS Scholarly Articles [6898]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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