Measurement and shaping of biphoton spectral wavefunctions
Abstract
In this work we present a simple method to reconstruct the complex spectral wavefunction of a biphoton, and hence gain complete information about the spectral and temporal properties of a photon pair. The technique, which relies on quantum interference, is applicable to biphoton states produced with a monochromatic pump when a shift of the pump frequency produces a shift in the relative frequencies contributing to the biphoton. We demonstrate an example of such a situation in type-II parametric down-conversion (SPDC) allowing arbitrary paraxial spatial pump and detection modes. Moreover, our test cases demonstrate the possibility to shape the spectral wavefunction. This is achieved by choosing the spatial mode of the pump and of the detection modes, and takes advantage of spatiotemporal correlations.
Keywords
Cite
@article{arxiv.1503.08629,
title = {Measurement and shaping of biphoton spectral wavefunctions},
author = {Nora Tischler and Alexander Buese and Luke G. Helt and Mathieu L. Juan and Nicolas Piro and Joyee Ghosh and Mike J. Steel and Gabriel Molina-Terriza},
journal= {arXiv preprint arXiv:1503.08629},
year = {2015}
}
Comments
Supplementary information also available. Comments and feedback appreciated. Compared to the previous version, here we have made the following changes: -corrected a typo in the text between Eq. (11) and (12) -corrected a typo in the references -added references