NONISOTROPIC 3-LEVEL QUANTUM SYSTEMS: COMPLETE SOLUTIONS FOR MINIMUM TIME AND MINIMUM ENERGY
NONISOTROPIC 3-LEVEL QUANTUM SYSTEMS: COMPLETE SOLUTIONS FOR MINIMUM TIME AND MINIMUM ENERGY
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非各向异性三能级量子系统:最短时间和最低能量的完整解决方案
DOI:
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发表时间:
2004
期刊:
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通讯作者:
G. Charlot
中科院分区:
文献类型:
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作者:
U. Boscain;T. Chambrion;G. Charlot
We apply techniques of subriemannian geometry on Lie groups
and of optimal synthesis on 2-D manifolds to the population transfer problem
in a three-level quantum system driven by two laser pulses, of arbitrary shape
and frequency. In the rotating wave approximation, we consider a nonisotropic
model, i.e., a model in which the two coupling constants of the lasers are
different. The aim is to induce transitions from the first to the third level,
minimizing 1) the time of the transition (with bounded laser amplitudes), 2)
the energy transferred by lasers to the system (with fixed final time). After
reducing the problem to real variables, for the purpose 1) we develop a theory
of time optimal syntheses for distributional problem on 2-D manifolds, while
for the purpose 2) we use techniques of subriemannian geometry on 3-D Lie
groups. The complete optimal syntheses are computed.