Format

Send to

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2012 Apr 27;108(17):173601. Epub 2012 Apr 23.

Cooperative Lamb shift in an atomic vapor layer of nanometer thickness.

Author information

1
Department of Physics, Durham University, Durham, United Kingdom.

Abstract

We present an experimental measurement of the cooperative Lamb shift and the Lorentz shift using a nanothickness atomic vapor layer with tunable thickness and atomic density. The cooperative Lamb shift arises due to the exchange of virtual photons between identical atoms. The interference between the forward and backward propagating virtual fields is confirmed by the thickness dependence of the shift, which has a spatial frequency equal to twice that of the optical field. The demonstration of cooperative interactions in an easily scalable system opens the door to a new domain for nonlinear optics.

PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Support Center