Fiber-assisted single-photon spectrograph
Quantum Physics
2009-09-15 v3
Abstract
We demonstrate the implementation of a fiber-integrated spectrograph utilizing chromatic group velocity dispersion (GVD) in a single mode fiber. By means of GVD we stretch an ultrafast pulse in time in order to spectrally resolve single photons in the time domain, detected by single photon counting modules with very accurate temporal resolution. As a result, the spectrum of a very weak pulse is recovered from a precise time measurement with high signal to noise ratio. We demonstrate the potential of our technique by applying our scheme to analyzing the joint spectral intensity distribution of a parametric downconversion source at telecommunication wavelength.
Cite
@article{arxiv.0902.3364,
title = {Fiber-assisted single-photon spectrograph},
author = {Malte Avenhaus and Andreas Eckstein and Peter J. Mosley and Christine Silberhorn},
journal= {arXiv preprint arXiv:0902.3364},
year = {2009}
}
Comments
4 pages, 3 figures