Photocount statistics of the Josephson parametric amplifier: a question of detection
Quantum Physics
2023-05-08 v4 Mesoscale and Nanoscale Physics
Abstract
Parametric amplifiers are known to squeeze the vacuum state of the electromagnetic field, which results in predictable statistics of the photocounts at their output. However, recent theoretical work arXiv:1112.4159 predicts a very different statistical distribution for an amplifier based on a Josephson junction. We test the hypothesis experimentally and recover the expected squeezed vacuum statistics. We explain this discrepancy by showing theoretically how the photocount statistics is dictated by the detection process, from single mode (our experiment) to multimode, fully resolved in frequency (as in arXiv:1112.4159).
Keywords
Cite
@article{arxiv.2010.03014,
title = {Photocount statistics of the Josephson parametric amplifier: a question of detection},
author = {Jean Olivier Simoneau and Stéphane Virally and Christian Lupien and Bertrand Reulet},
journal= {arXiv preprint arXiv:2010.03014},
year = {2023}
}
Comments
5 pages, 5 figures