Spontaneous emission from a fractal vacuum

被引：7

作者：

Akkermans, Eric ^{[1
]}

Gurevich, Evgeni ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

来源：

EPL | 2013年 / 103卷 / 03期

基金：

以色列科学基金会;

关键词：

LOCALIZATION; SPECTRA; OPTICS; DECAY;

D O I：

10.1209/0295-5075/103/30009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spontaneous emission of a quantum emitter coupled to a QED vacuum with a deterministic fractal structure of its spectrum is considered. We show that the decay probability does not follow a Wigner-Weisskopf exponential decrease but rather an overall power law behavior with a rich oscillatory structure, both depending on the local fractal properties of the vacuum spectrum. These results are obtained by giving first a general perturbative derivation for short times. Then we propose a simplified model which retains the main features of a fractal spectrum to establish analytic expressions valid for all time scales. Finally, we discuss the case of a Fibonacci cavity and its experimental relevance to observe these results. Copyright (c) EPLA, 2013

引用

页数：5

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