Electromagnetic effects in the quantum interference of dipoles

A. A. Villaeys, Karl F. Freed

Susanne F. Velin, Jürgen Kästel, Michael Fleischhauer +1 more

Negative refraction with minimal absorption can be obtained using quantum interference effects similar to electromagnetically induced transparency (EIT). Coupling a magnetic dipole transition coherently with an electric dipole transition leads to electromagnetically induced chirality, which can provide negative refraction.

Raiju Puthumpally-Joseph, Osman Atabek, Maxim Sukharev +1 more

We present a detailed, realistic analysis of the implementation of a proposal for dipole-induced electromagnetic transparency (DIET) [R. Puthumpally-Joseph, M. Sukharev, O. Atabek, and E. Charron, Phys. Rev. Lett. 113, 163603 (2014)] using an ensemble of cold atoms at high density. Using both direct numerical simulations and simple analytical models, we show how, in a realistic $N$-level quantum system, narrow transparency windows can appear at large densities. The existence of such windows is attributed to quantum interference effects in overlapping resonances. Our analysis is applied to the ${D}_{1}$ transition of Rb atoms, and we show that, at high densities, Rb can behave like a simple three-level emitter exhibiting all the properties of DIET. Some interesting effects such as slow light are also presented, and their limits in the context of DIET are discussed

Chris Philippidis, Christopher Dewdney, Basil J. Hiley

Gianluca Manzacca, Kurt Hingerl, Gabriella Cincotti

We present an all-optical switch based on joint effects of dipole induced transparency (DIT) and electromagnetic induced transparency (EIT), that forbids the transparency induced by a dipole in an add-drop filter due to the vacuum Rabi shifting. The switching speed is very high, since only quantum interference between probe and pump signals is involved.

L. Mandeļ