The use of artificial atoms as an active lasing medium opens a way to construct novel sources of nonclassical radiation. An example is the creation of photon-number squeezed light. Here we present a design of a laser consisting of multiple Cooper-pair transistors coupled to a microwave resonator. Over a broad range of experimentally realizable parameters, this laser creates photon-number squeezed microwave radiation, characterized by a Fano factor F≪1, at a very high resonator photon number. We investigate the impact of gate-charge disorder in a Cooper-pair transistor and show that the system can create squeezed strong microwave fields even in the presence of maximum disorder.
Cite
@article{arxiv.1611.07484,
title = {Creating photon-number squeezed strong microwave fields by a Cooper-pair injection laser},
author = {Martin Koppenhöfer and Juha Leppäkangas and Michael Marthaler},
journal= {arXiv preprint arXiv:1611.07484},
year = {2017}
}
Comments
extended and revised version, equivalent to the published article. 11 pages, 3 figures