An opto-magneto-mechanical quantum interface between distant superconducting qubits

A quantum internet, where widely separated quantum devices are coherently connected, is a fundamental vision for local and global quantum information networks and processing. Superconducting quantum devices can now perform sophisticated quantum engineering locally on chip and a detailed method to ac...

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Main Authors:	Xia, Keyu, Vanner, Michael R., Twamley, Jason
Format:	Online
Language:	English
Published:	Nature Publishing Group 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4081873/

id	pubmed-4081873
recordtype	oai_dc
spelling	pubmed-40818732014-07-09 An opto-magneto-mechanical quantum interface between distant superconducting qubits Xia, Keyu Vanner, Michael R. Twamley, Jason Article A quantum internet, where widely separated quantum devices are coherently connected, is a fundamental vision for local and global quantum information networks and processing. Superconducting quantum devices can now perform sophisticated quantum engineering locally on chip and a detailed method to achieve coherent optical quantum interconnection between distant superconducting devices is a vital, but highly challenging, goal. We describe a concrete opto-magneto-mechanical system that can interconvert microwave-to-optical quantum information with high fidelity. In one such node we utilise the magnetic fields generated by the supercurrent of a flux qubit to coherently modulate a mechanical oscillator that is part of a high-Q optical cavity to achieve high fidelity microwave-to-optical quantum information exchange. We analyze the transfer between two spatially distant nodes connected by an optical fibre and using currently accessible parameters we predict that the fidelity of transfer could be as high as ~80%, even with significant loss. Nature Publishing Group 2014-07-04 /pmc/articles/PMC4081873/ /pubmed/24994063 http://dx.doi.org/10.1038/srep05571 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Xia, Keyu Vanner, Michael R. Twamley, Jason
spellingShingle	Xia, Keyu Vanner, Michael R. Twamley, Jason An opto-magneto-mechanical quantum interface between distant superconducting qubits
author_facet	Xia, Keyu Vanner, Michael R. Twamley, Jason
author_sort	Xia, Keyu
title	An opto-magneto-mechanical quantum interface between distant superconducting qubits
title_short	An opto-magneto-mechanical quantum interface between distant superconducting qubits
title_full	An opto-magneto-mechanical quantum interface between distant superconducting qubits
title_fullStr	An opto-magneto-mechanical quantum interface between distant superconducting qubits
title_full_unstemmed	An opto-magneto-mechanical quantum interface between distant superconducting qubits
title_sort	opto-magneto-mechanical quantum interface between distant superconducting qubits
description	A quantum internet, where widely separated quantum devices are coherently connected, is a fundamental vision for local and global quantum information networks and processing. Superconducting quantum devices can now perform sophisticated quantum engineering locally on chip and a detailed method to achieve coherent optical quantum interconnection between distant superconducting devices is a vital, but highly challenging, goal. We describe a concrete opto-magneto-mechanical system that can interconvert microwave-to-optical quantum information with high fidelity. In one such node we utilise the magnetic fields generated by the supercurrent of a flux qubit to coherently modulate a mechanical oscillator that is part of a high-Q optical cavity to achieve high fidelity microwave-to-optical quantum information exchange. We analyze the transfer between two spatially distant nodes connected by an optical fibre and using currently accessible parameters we predict that the fidelity of transfer could be as high as ~80%, even with significant loss.
publisher	Nature Publishing Group
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4081873/
_version_	1613108197550194688

An opto-magneto-mechanical quantum interface between distant superconducting qubits

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