Document Type

Article

Publication Date

Spring 3-17-2011

Publication Title

Physical Review A

ISSN

1050-2947

Volume

83

Issue

3

First Page

033615-1

Last Page

033615-6

DOI

10.1103/PhysRevA.83.033615

Abstract

We demonstrate a photon-counting technique for detecting Bragg excitation of an ultracold gas of atoms. By measuring the response of the light field to the atoms, we derive a signal independent of traditional time-of-flight atom-imaging techniques. With heterodyne detection we achieve photon shot-noise limited detection of the amplification or depletion of one of the Bragg laser beams. Photon counting for Bragg spectroscopy will be useful for strongly interacting gases where atom-imaging detection fails. In addition, this technique provides the ability to resolve the evolution of excitations as a function of pulse duration.

Included in

Physics Commons

Share

COinS