Difference between revisions of "Quantum Control"
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<center>Fig.1: schematic diagram of the experimental setup</center> | <center>Fig.1: schematic diagram of the experimental setup</center> | ||
| + | In weak field reigme, a transform-limited pulse is a optimal pulse to enhance a TPA. | ||
[[Image:Intensity_total_v4.jpg|center|400px]] | [[Image:Intensity_total_v4.jpg|center|400px]] | ||
<center>Fig.2: fluoresence as a function of chirp rates and transform-limited intensity of pulses</center> | <center>Fig.2: fluoresence as a function of chirp rates and transform-limited intensity of pulses</center> | ||
| + | |||
| + | A linear chirped pulse is more optimal than a transform-limited pulse. | ||
Revision as of 04:20, 28 August 2009
Two photon absorption in strong field
A shaped ultrafast pulse makes it possible to stir a quantum system and thus control a quantum process via light-matter interaction. Two photon absorption(TPA) processes between two states is one of famous systema of coherent control. We study coherent control schemes for a TPA process in a strong field. For a optimal coherent scheme to enhance TPA, strong field effects(dynamic Stark shift) has to be considered.
In weak field reigme, a transform-limited pulse is a optimal pulse to enhance a TPA.
A linear chirped pulse is more optimal than a transform-limited pulse.
