Ultrastrong coupling probed by Coherent Population Transfer release_xvvm5aq6ufc2lnc2l7lvfjmx4y

by Giuseppe Falci, A. Ridolfo, P. G. Di Stefano, Elisabetta Paladino

Published in Scientific Reports by Springer Science and Business Media LLC.

2019   Volume 9, Issue 1, p9249

Abstract

Light-matter interaction, and the understanding of the fundamental physics behind, is the scenario of emerging quantum technologies. Solid state devices allow the exploration of new regimes where ultrastrong coupling strengths are comparable to subsystem energies, and new exotic phenomena like quantum phase transitions and ground-state entanglement occur. While experiments so far provided only spectroscopic evidence of ultrastrong coupling, we propose a new dynamical protocol for detecting virtual photon pairs in the dressed eigenstates. This is the fingerprint of the violated conservation of the number of excitations, which heralds the symmetry broken by ultrastrong coupling. We show that in flux-based superconducting architectures this photon production channel can be coherently amplified by Stimulated Raman Adiabatic Passage, providing a unique tool for an unambiguous dynamical detection of ultrastrong coupling in present day hardware. This protocol could be a benchmark for control of the dynamics of ultrastrong coupling architectures, in view of applications to quantum information and microwave quantum photonics.
In text/plain format

Archived Files and Locations

application/pdf  1.8 MB
file_yuru65dbxjal7pm7cbzafdmzqe
europepmc.org (repository)
web.archive.org (webarchive)
Read Archived PDF
Preserved and Accessible
Type  article-journal
Stage   published
Date   2019-06-25
Language   en ?
Container Metadata
Open Access Publication
In DOAJ
In Keepers Registry
ISSN-L:  2045-2322
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: 94cbd2b2-2d75-4b41-b65c-06508c86ca7f
API URL: JSON