Optimal alignment control of a nonpolar molecule through nonresonant multiphoton transitions

Kazuyuki Nakagami, Yoshihiko Mizumoto, Yukiyoshi Ohtsuki

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Alignment control of an ensemble of nonpolar molecules is numerically studied by means of optimal control simulation. A nitrogen molecule that is modeled by a quantum rigid rotor is adopted. Controlled rotational wave packets are created through nonresonant optical transitions induced by polarizability coupling. Optimal pulses are designed to achieve the alignment control at a specified time in the absence/presence of external static fields in zero- and finite-temperature cases, as well as to maintain an aligned state. When maintaining an aligned state over a specified time interval is chosen as a target, the control mechanism is primarily attributed to a dynamical one. Multiple optimal solutions that lead to virtually the same control achievement are found, which are consistent with the topology of the quantum control landscape.

Original languageEnglish
Article number194103
JournalJournal of Chemical Physics
Issue number19
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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