Hartman effect and nonlocality in quantum networks

被引：12
作者：
Bandopadhyay, S
Jayannavar, AM
机构：
[1] SN Bose Natl Ctr Basic Sci, Kolkata 700098, W Bengal, India
[2] Inst Phys, Bhubaneswar 751005, Orissa, India
来源：
PHYSICS LETTERS A | 2005年 / 335卷 / 04期
关键词：
tunneling; electronic transport;
D O I：
10.1016/j.physleta.2004.12.047
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the phase time for various quantum mechanical networks having potential barriers in their arms to find the generic presence of Hartman effect. In such systems it is possible to control the 'super arrival' time in one of the arms by changing parameters on another, spatially separated from it. This is yet another quantum nonlocal effect. Negative time delays (time advancement) and 'ultra Hartman effect' with negative saturation times have been observed in some parameter regimes. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：266 / 273
页数：8
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