Effect of Landau－Zener tunneling by the varying sweeping rate of external field

doi:10.1088/1674-1056/19/3/033201

Abstract We study the effect of Landau--Zener (LZ) tunneling caused by the varying sweeping rate of the external field, and solve the problem about the LZ tunneling rate among many levels. The LZ tunneling rate is essentially changed by the unsteady variation of the time-dependent sweeping field and is different from the steadily varying sweeping field, which makes the particles in lower states transit periodically to upper states within a finite time.

Keywords: Landau--Zener tunneling varying sweeping rate transition probability n-level state

Received: 15 January 2009
Revised: 09 April 2009
Accepted manuscript online:

PACS:	03.65.Xp	(Tunneling, traversal time, quantum Zeno dynamics)
	03.65.Ge	(Solutions of wave equations: bound states)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 20804039) and the Natural Science Foundation of Zhejiang Province of China (Grant No. Y4080300).

Cite this article:

Wang Jin-Bao(王锦宝), Tong Guo-Ping(童国平), and Li Sheng(李盛) Effect of Landau－Zener tunneling by the varying sweeping rate of external field 2010 Chin. Phys. B 19 033201

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Effect of Landau－Zener tunneling by the varying sweeping rate of external field

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