Reconstructing Gaussian bipartite states with a single polarization-sensitive homodyne detector

authored by
Jonas Junker, Dennis Wilken, Daniel Steinmeyer, Michèle Heurs
Abstract

We present a novel method to fully estimate Gaussian bipartite polarization states using only a single homodyne detector. Our approach is based on [Phys. Rev. Lett. 102, 020502 (2009)], but circumvents additional optics, and thereby losses, in the signal path. We provide an intuitive explanation of our scheme without needing to define auxiliary modes. With six independent measurements, we fully reconstruct the state’s covariance matrix. We validate our method by comparing it to a conventional dual-homodyne measurement scheme.

Organisation(s)
Institute of Gravitation Physics
QuantumFrontiers
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
Type
Article
Journal
Optics express
Volume
30
Pages
33860-33868
No. of pages
9
ISSN
1094-4087
Publication date
31.08.2022
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Atomic and Molecular Physics, and Optics
Electronic version(s)
https://doi.org/10.1364/OE.465186 (Access: Open)