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Title: Engineering dissipative channels for realizing Schrödinger cats in SQUIDs
Authors: Everitt, Mark J.
Spiller, T.P.
Milburn, G.J.
Wilson, Richard D.
Zagoskin, Alexandre M.
Keywords: Cat state
Quantum metrology
Single-photon decoherence
Decoherence
Two-photon absorbers
Quantum to classical transition
Double well systems
Issue Date: 2014
Publisher: © The Authors. Published by Frontiers Media.
Citation: EVERITT, M.J. ...et al., 2014. Engineering dissipative channels for realizing Schrödinger cats in SQUIDs. Frontiers in ICT, 1:1
Abstract: We show that by engineering the interaction with the environment, there exists a large class of systems that can evolve irreversibly to a cat state. To be precise, we show that it is possible to engineer an irreversible process so that the steady state is close to a pure Schrödinger’s cat state by using double well systems and an environment comprising two-photon (or phonon) absorbers.We also show that it should be possible to prolong the lifetime of a Schrödinger’s cat state exposed to the destructive effects of a conventional single-photon decohering environment. In addition to our general analysis, we present a concrete circuit realization of both system and environment that should be fabricatable with current technologies. Our protocol should make it easier to prepare and maintain Schrödinger cat states, which would be useful in applications of quantum metrology and information processing as well as being of interest to those probing the quantum to classical transition.
Description: This Document is Protected by copyright and was first published by Frontiers. All rights reserved. it is reproduced with permission. This is an Open Access Article. It is published by Frontiers Media under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/
Version: Published
DOI: 10.3389/fict.2014.00001
URI: https://dspace.lboro.ac.uk/2134/21296
Publisher Link: http://dx.doi.org/10.3389/fict.2014.00001
ISSN: 2297-198X
Appears in Collections:Published Articles (Physics)

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