Evading Vacuum Noise: Wigner Projections or Husimi Samples?
Quantum Physics
2016-08-17 v1
Abstract
The accuracy in determining the quantum state of a system depends on the type of measurement performed. Homodyne and heterodyne detection are the two main schemes in continuous-variable quantum information. The former leads to a direct reconstruction of the Wigner function of the state, whereas the latter samples its Husimi ~function. We experimentally demonstrate that heterodyne detection outperforms homodyne detection for almost all Gaussian states, the details of which depend on the squeezing strength and thermal noise.
Cite
@article{arxiv.1604.07692,
title = {Evading Vacuum Noise: Wigner Projections or Husimi Samples?},
author = {Christian R. Müller and Christian Peuntinger and Thomas Dirmeier and Imran Khan and Ulrich Vogl and Christoph Marquardt and Gerd Leuchs and Luis L. Sánchez-Soto and Yong Siah Teo and Zdenek Hradil and Jaroslav Řeháček},
journal= {arXiv preprint arXiv:1604.07692},
year = {2016}
}
Comments
6 pages, 4 figures