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A new quantum control scheme for multilevel systems based on effective decomposition by intense laser fields
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10.1063/1.3079327
By M. Sugawara1,a)
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Affiliations:
1 Department of Fundamental Science and Technology, Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
a) Electronic mail: michi@chem.keio.ac.jp.
J. Chem. Phys. 130, 094103 (2009)
/content/aip/journal/jcp/130/9/10.1063/1.3079327
http://aip.metastore.ingenta.com/content/aip/journal/jcp/130/9/10.1063/1.3079327
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## Figures

FIG. 1.

Schematic of space separation for a general multilevel quantum system.

FIG. 2.

Schematic of the branch-type four-level system.

FIG. 3.

Population dynamics of the branch-type four-level system with under the laser conditions; (a) , , (b) , , (c) , , and (d) , . Thin solid and thin broken lines denote the exact population dynamics of and , respectively. Thick solid and thick broken lines denotes the population dynamics of and calculated by the effective Hamiltonian, respectively. The area with light gray denotes the population which escapes to the -space.

FIG. 4.

Population dynamics of the branch-type four-level system with under the laser conditions; (a) , , (b) , , (c) , , and (d) , . Thin solid and thin broken lines denote the exact population dynamics of and , respectively. Thick solid and thick broken lines denotes the population dynamics of and calculated by the effective Hamiltonian, respectively. The area with light gray denotes the population which escapes to the -space.

FIG. 5.

Population dynamics of the branch-type four-level system with under the laser condition , with various as follows; (a) , (b) , (c) , and (d) . Thin solid and thin broken lines denote the exact population dynamics of and , respectively. Thick solid and thick broken lines denotes the population dynamics of and calculated by the effective Hamiltonian, respectively. The area with light gray denotes the population which escapes to the -space.

FIG. 6.

Population dynamics of the branch-type four-level system with under the laser condition , with various as follows; (a) , (b) , (c) , and (d) . Thin solid and thin broken lines denote the exact population dynamics of and , respectively. Thick solid and thick broken lines denotes the population dynamics of and calculated by the effective Hamiltonian, respectively. The area with light gray denotes the population which escapes to the -space.

FIG. 7.

Schematic of the branch-type five-level system.

FIG. 8.

Population dynamics of the branch-type five-level system with under the laser conditions; (a) , , (b) , , (c) , , and (d) , . Thin solid, broken, and dotted lines denote the exact population dynamics of , , and . Thick dark gray solid, thick light gray broken, and thick dark broken lines denote the population dynamics of , , and calculated by effective Hamiltonian, respectively. The area filled with light gray denotes the sum of the -space population and the lost population.

FIG. 9.

Population dynamics of the five-level system with under the laser condition , with various as follows; (a) , (b) , and (c) . Thin solid, broken, and dotted lines denote the exact population dynamics of , , and . Thick dark gray solid, thick light gray broken, and thick dark broken lines denote the population dynamics of , , and calculated with effective Hamiltonian, respectively. The area filled with light gray denotes the sum of the -space population and the lost population.

FIG. 10.

(a) Time dependence of the laser pulse envelope function with the parameters, , , , and . Dark gray solid line, light gray broken line and dark broken line denote pulse envelope functions which correspond to , and , respectively. (b) Population dynamics of the five-level system with and under the laser condition , . Thin solid, broken, and dotted lines denote the exact population dynamics of , , and . Thick dark gray solid, thick light gray broken, and thick dark broken lines denote the population dynamics of , , and calculated with effective Hamiltonian, respectively. The area filled with light gray denotes the sum of the -space population and the lost population.

/content/aip/journal/jcp/130/9/10.1063/1.3079327
2009-03-04
2014-04-23

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