Effective tunneling coefficient of a coupled double-well system modulated

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/3935
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Title
Effective tunneling coefficient of a coupled double-well system modulated
Author
氏名 Tsukada Noriaki
ヨミ ツカダ ノリアキ
別名 塚田 紀昭
氏名 Yoshida H
ヨミ ヨシダ
別名
氏名 Suzuki T
ヨミ スズキ
別名
NDC
420
Abstract

We numerically study coherent tunneling oscillations of the particles between two levels in a double-well
potential in the presence of anharmonic periodic potentials. Extremely short driving pulses modify the tunneling
coefficient to ef f= cos A, where is the bare tunneling coefficient without the driving field and A is the
pulse area of the driving wave form. The modulation amplitude of the ef f gradually decreases as the driving
wave form becomes broad and is given by ef f= J0 A for the sinusoidal modulation, where J0 x denotes the
ordinary Bessel function of order zero. Theoretical derivation of the effective tunneling coefficient ef f
= cos A is also shown for a periodic kick with alternating sign by means of the transfer matrix formula.

Journal Title
Physical review. Ser. 3. A, Atomic, molecular, and optical physics
Volume
77
Issue
2
Spage
022101-1
Epage
022101-5
Published Date
2008
Publisher
American Physical Society
ISSN
10502947
NCID
AA10764867
DOI
10.1103/PhysRevA.77.022101
Language
eng
NIIType
Journal Article
Text Version
出版社版
Rights
©2008 The American Physical Society
Relation URL
Old URI
Set
it-hiroshima