LANDAU-ZENER TRANSITIONS IN THE PRESENCE OF HARMONIC NOISE

被引：3

作者：

Kraft, Matthias ^{[1
,2
]}

Burkhardt, Stephan ^{[1
]}

Mannella, Riccardo ^{[3
]}

Wimberger, Sandro ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England

[3] Univ Pisa, Dipartimento Fis E Fermi, I-56127 Pisa, Italy

来源：

FLUCTUATION AND NOISE LETTERS | 2013年 / 12卷 / 02期

关键词：

Landau-Zener tunneling; noise; DYNAMICS;

D O I：

10.1142/S0219477513400051

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We study the influence of off-diagonal harmonic noise on transitions in a Landau-Zener model. We demonstrate that the harmonic noise can change the transition probabilities substantially and that its impact depends strongly on the characteristic frequency of the noise. In the underdamped regime of the noise process, its effect is compared with the one of a deterministic sinusoidally oscillating function. While altering the properties of the noise process allows one to engineer the transitions probabilities, driving the system with a deterministic sinusoidal function can result in larger and more controlled changes of the transition probability. This may be relevant for realistic implementations of our model with Bose-Einstein condensates in noise-driven optical lattices.

引用

页数：10

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