Fully quantum coherent control

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The coherent control problem is formulated in a second-quantized basis of system-field states (CC2Q). In principle, many system-field states are needed to compute the control target functional T. Here we show that a new and very simple formula for the fully quantized control functional can be obtained. As a result, T can be evaluated exactly without explicit knowledge of the system-field states. Two examples demonstrate the spirit of the approach, which can be scaled to larger problems by applying combined Lanczos and Hellman-Feynman methodologies. Although CC2Q, as a full quantum theory, does not scale as favorably as the semiclassical approach, its symmetrical treatment of system and field promises new insights because it not only views the field as a shaper of molecular coherence, but also the molecule as a shaper of field coherence.

Original languageEnglish (US)
Pages (from-to)33-46
Number of pages14
JournalChemical Physics
Issue number1-3
StatePublished - Jun 1 2001

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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