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Brinks, D.; Stefani, F.D.; Kulzer, F.; Hildner, R.; Taminiau, T.H.; Avlasevich, Y.; Müllen, K.; Van Hulst, N.F. "Visualizing and controlling vibrational wave packets of single molecules" (2010) Nature. 465(7300):905-908
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Abstract:

The active steering of the pathways taken by chemical reactions and the optimization of energy conversion processes provide striking examples of the coherent control of quantum interference through the use of shaped laser pulses. Experimentally, coherence is usually established by synchronizing a subset of molecules in an ensemble with ultra-short laser pulses. But in complex systems where even chemically identical molecules exist with different conformations and in diverse environments, the synchronized subset will have an intrinsic inhomogeneity that limits the degree of coherent control that can be achieved. A naturaland, indeed, the ultimatesolution to overcoming intrinsic inhomogeneities is the investigation of the behaviour of one molecule at a time. The single-molecule approach has provided useful insights into phenomena as diverse as biomolecular interactions, cellular processes and the dynamics of supercooled liquids and conjugated polymers. Coherent state preparation of single molecules has so far been restricted to cryogenic conditions, whereas at room temperature only incoherent vibrational relaxation pathways have been probed. Here we report the observation and manipulation of vibrational wave-packet interference in individual molecules at ambient conditions. We show that adapting the time and phase distribution of the optical excitation field to the dynamics of each molecule results in a high degree of control, and expect that the approach can be extended to achieve single-molecule coherent control in other complex inhomogeneous systems. © Macmillan Publishers Limited. All rights reserved.

Registro:

Documento: Artículo
Título:Visualizing and controlling vibrational wave packets of single molecules
Autor:Brinks, D.; Stefani, F.D.; Kulzer, F.; Hildner, R.; Taminiau, T.H.; Avlasevich, Y.; Müllen, K.; Van Hulst, N.F.
Filiación:ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain
Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
ICREA-Institució Catalana de Recerca i Estudis Avançats, 08015 Barcelona, Spain
Departamento de Física, Instituto de Física de Buenos Aires (IFIBA, CONICET), Universidad de Buenos Aires, Pab. I Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:chemical reaction; inhomogeneity; laser; molecular analysis; optimization; polymer; quantum mechanics; vibration; visualization; wave spectrum; article; excitation; molecular dynamics; molecular interaction; priority journal; vibration
Año:2010
Volumen:465
Número:7300
Página de inicio:905
Página de fin:908
DOI: http://dx.doi.org/10.1038/nature09110
Título revista:Nature
Título revista abreviado:Nature
ISSN:00280836
CODEN:NATUA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00280836_v465_n7300_p905_Brinks

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Citas:

---------- APA ----------
Brinks, D., Stefani, F.D., Kulzer, F., Hildner, R., Taminiau, T.H., Avlasevich, Y., Müllen, K.,..., Van Hulst, N.F. (2010) . Visualizing and controlling vibrational wave packets of single molecules. Nature, 465(7300), 905-908.
http://dx.doi.org/10.1038/nature09110
---------- CHICAGO ----------
Brinks, D., Stefani, F.D., Kulzer, F., Hildner, R., Taminiau, T.H., Avlasevich, Y., et al. "Visualizing and controlling vibrational wave packets of single molecules" . Nature 465, no. 7300 (2010) : 905-908.
http://dx.doi.org/10.1038/nature09110
---------- MLA ----------
Brinks, D., Stefani, F.D., Kulzer, F., Hildner, R., Taminiau, T.H., Avlasevich, Y., et al. "Visualizing and controlling vibrational wave packets of single molecules" . Nature, vol. 465, no. 7300, 2010, pp. 905-908.
http://dx.doi.org/10.1038/nature09110
---------- VANCOUVER ----------
Brinks, D., Stefani, F.D., Kulzer, F., Hildner, R., Taminiau, T.H., Avlasevich, Y., et al. Visualizing and controlling vibrational wave packets of single molecules. Nature. 2010;465(7300):905-908.
http://dx.doi.org/10.1038/nature09110