Volume 103, Number 5, September 2013
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||24 September 2013|
Subradiant hybrid states in the open 3D Anderson-Dicke model
1 Dipartimento di Matematica e Fisica, Università Cattolica - via Musei 41, I-25121 Brescia, Italy, EU
2 Interdisciplinary Laboratories for Advanced Materials Physics - via Musei 41, I-25121 Brescia, Italy, EU
3 Istituto Nazionale di Fisica Nucleare, Sezione di Pavia - via Bassi 6, I-27100, Pavia, Italy, EU
4 Université de Nice Sophia Antipolis, CNRS, Institut Non - Linéaire de Nice, UMR 7335 Valbonne F-06560, France, EU
Received: 4 June 2013
Accepted: 4 September 2013
Anderson localization is a paradigmatic coherence effect in disordered systems, often analyzed in the absence of dissipation. Here we consider the case of coherent dissipation, occurring for open system with coupling to a common decay channel. This dissipation induces cooperative Dicke super- and subradiance and an effective long-range hopping, expected to destroy Anderson localization. We are thus in the presence of two competing effects, i.e. localization driven by disorder and delocalization driven by dissipative opening. Here we demonstrate the existence of a subradiant hybrid regime, emerging from the interplay of opening and disorder, in which subradiant states are hybrid with both features of localized and extended states, while superradiant states are extended. We also provide analytical predictions for this regime, confirmed by numerical simulations.
PACS: 72.15.Rn – Localization effects (Anderson or weak localization) / 05.60.Gg – Quantum transport / 03.65.Yz – Decoherence; open systems; quantum statistical methods
© 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.