Utilizing weak pump depletion to stabilize squeezed vacuum states
Quantum Physics
2015-06-17 v1
Abstract
We propose and demonstrate a pump-phase locking technique that makes use of weak pump depletion (WPD) - an unavoidable effect that is usually neglected - in a sub-threshold optical parametric oscillator (OPO). We show that the phase difference between seed and pump beam is imprinted on both light fields by the non-linear interaction in the crystal and can be read out without disturbing the squeezed output. Our new locking technique allows for the first experimental realization of a pump-phase lock by reading out the pre-existing phase information in the pump field. There is no degradation of the detected squeezed states required to implement this scheme.
Keywords
Cite
@article{arxiv.1503.02854,
title = {Utilizing weak pump depletion to stabilize squeezed vacuum states},
author = {Timo Denker and Dirk Schütte and Maximilian H. Wimmer and Trevor A. Wheatley and Elanor H. Huntington and Michèle Heurs},
journal= {arXiv preprint arXiv:1503.02854},
year = {2015}
}
Comments
11 pages, 7 figures