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Trade off-free entanglement stabilization in a superconducting qutrit-qubit system

Quantum reservoir engineering is a powerful framework for autonomous quantum state preparation and error correction. However, traditional approaches to reservoir engineering are hindered by unavoidable coherent leakage out of the target state, which imposes an inherent trade off between achievable s...

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Autores principales: Brown, T., Doucet, E., Ristè, D., Ribeill, G., Cicak, K., Aumentado, J., Simmonds, R., Govia, L., Kamal, A., Ranzani, L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9271051/
https://www.ncbi.nlm.nih.gov/pubmed/35810169
http://dx.doi.org/10.1038/s41467-022-31638-0
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author Brown, T.
Doucet, E.
Ristè, D.
Ribeill, G.
Cicak, K.
Aumentado, J.
Simmonds, R.
Govia, L.
Kamal, A.
Ranzani, L.
author_facet Brown, T.
Doucet, E.
Ristè, D.
Ribeill, G.
Cicak, K.
Aumentado, J.
Simmonds, R.
Govia, L.
Kamal, A.
Ranzani, L.
author_sort Brown, T.
collection PubMed
description Quantum reservoir engineering is a powerful framework for autonomous quantum state preparation and error correction. However, traditional approaches to reservoir engineering are hindered by unavoidable coherent leakage out of the target state, which imposes an inherent trade off between achievable steady-state state fidelity and stabilization rate. In this work we demonstrate a protocol that achieves trade off-free Bell state stabilization in a qutrit-qubit system realized on a circuit-QED platform. We accomplish this by creating a purely dissipative channel for population transfer into the target state, mediated by strong parametric interactions coupling the second-excited state of a superconducting transmon and the engineered bath resonator. Our scheme achieves a state preparation fidelity of 84% with a stabilization time constant of 339 ns, leading to a 54 ns error-time product in a solid-state quantum information platform.
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spelling pubmed-92710512022-07-11 Trade off-free entanglement stabilization in a superconducting qutrit-qubit system Brown, T. Doucet, E. Ristè, D. Ribeill, G. Cicak, K. Aumentado, J. Simmonds, R. Govia, L. Kamal, A. Ranzani, L. Nat Commun Article Quantum reservoir engineering is a powerful framework for autonomous quantum state preparation and error correction. However, traditional approaches to reservoir engineering are hindered by unavoidable coherent leakage out of the target state, which imposes an inherent trade off between achievable steady-state state fidelity and stabilization rate. In this work we demonstrate a protocol that achieves trade off-free Bell state stabilization in a qutrit-qubit system realized on a circuit-QED platform. We accomplish this by creating a purely dissipative channel for population transfer into the target state, mediated by strong parametric interactions coupling the second-excited state of a superconducting transmon and the engineered bath resonator. Our scheme achieves a state preparation fidelity of 84% with a stabilization time constant of 339 ns, leading to a 54 ns error-time product in a solid-state quantum information platform. Nature Publishing Group UK 2022-07-09 /pmc/articles/PMC9271051/ /pubmed/35810169 http://dx.doi.org/10.1038/s41467-022-31638-0 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Brown, T.
Doucet, E.
Ristè, D.
Ribeill, G.
Cicak, K.
Aumentado, J.
Simmonds, R.
Govia, L.
Kamal, A.
Ranzani, L.
Trade off-free entanglement stabilization in a superconducting qutrit-qubit system
title Trade off-free entanglement stabilization in a superconducting qutrit-qubit system
title_full Trade off-free entanglement stabilization in a superconducting qutrit-qubit system
title_fullStr Trade off-free entanglement stabilization in a superconducting qutrit-qubit system
title_full_unstemmed Trade off-free entanglement stabilization in a superconducting qutrit-qubit system
title_short Trade off-free entanglement stabilization in a superconducting qutrit-qubit system
title_sort trade off-free entanglement stabilization in a superconducting qutrit-qubit system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9271051/
https://www.ncbi.nlm.nih.gov/pubmed/35810169
http://dx.doi.org/10.1038/s41467-022-31638-0
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