Volume 103, Number 3, August 2013
|Number of page(s)||5|
|Published online||30 August 2013|
Spontaneous emission from a fractal vacuum
Department of Physics, Technion Israel Institute of Technology - Haifa 32000, Israel
Received: 6 June 2013
Accepted: 5 August 2013
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.
PACS: 05.45.Df – Fractals / 42.50.Pq – Cavity quantum electrodynamics; micromasers
© EPLA, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.