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Isolated vibrational wavepackets in D2+: Defining superposition conditions and wavepacket distinguishability

Authors
  • Bryan, W. A.
  • McKenna, J.
  • English, E. M. L.
  • Wood, J.
  • Calvert, C. R.
  • Torres, R.
  • Murphy, D. S.
  • Turcu, I. C. E.
  • Collier, J. L.
  • McCann, J. F.
  • Williams, I. D.
  • Newell, W. R.
Type
Published Article
Publication Date
Nov 06, 2007
Submission Date
Nov 06, 2007
Identifiers
DOI: 10.1103/PhysRevA.76.053402
Source
arXiv
License
Unknown
External links

Abstract

Tunnel ionization of room-temperature D$_2$ in an ultrashort (12 femtosecond) near infra-red (800 nm) pump laser pulse excites a vibrational wavepacket in the D2+ ions; a rotational wavepacket is also excited in residual D2 molecules. Both wavepacket types are collapsed a variable time later by an ultrashort probe pulse. We isolate the vibrational wavepacket and quantify its evolution dynamics through theoretical comparison. Requirements for quantum computation (initial coherence and quantum state retrieval) are studied using this well-defined (small number of initial states at room temperature, initial wavepacket spatially localized) single-electron molecular prototype by temporally stretching the pump and probe pulses.

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