Probing molecular dynamics with attosecond resolution using correlated wave packet pairs

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DOIResolve DOI: http://doi.org/10.1038/nature01430
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TypeArticle
Journal titleNature
Volume421
Issue6925
Pages826829; # of pages: 4
Subjectmolecular dynamics; attosecond science; attosecond; wave packets
AbstractSpectroscopic measurements with increasingly higher time resolution are generally thought to require increasingly shorter laser pulses, as illustrated by the recent monitoring of the decay of core-excited krypton1 using attosecond photon pulses2, 3. However, an alternative approach to probing ultrafast dynamic processes might be provided by entanglement, which has improved the precision4, 5 of quantum optical measurements. Here we use this approach to observe the motion of a D2+ vibrational wave packet formed during the multiphoton ionization of D2 over several femtoseconds with a precision of about 200 attoseconds and 0.05 ångströms, by exploiting the correlation between the electronic and nuclear wave packets formed during the ionization event. An intense infrared laser field drives the electron wave packet, and electron recollision6, 7, 8, 9, 10, 11 probes the nuclear motion. Our results show that laser pulse duration need not limit the time resolution of a spectroscopic measurement, provided the process studied involves the formation of correlated wave packets, one of which can be controlled; spatial resolution is likewise not limited to the focal spot size or laser wavelength.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
Identifier10084666
NPARC number1600671
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Record identifier6ad03a7c-f89d-4209-943e-36e61ad989fc
Record created2004-10-28
Record modified2016-05-09
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