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Quantum memory with strong and controllable Rydberg-level interactions

Realization of distributed quantum systems requires fast generation and long-term storage of quantum states. Ground atomic states enable memories with storage times in the range of a minute, however their relatively weak interactions do not allow fast creation of non-classical collective states. Ryd...

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Detalles Bibliográficos
Autores principales: Li, Lin, Kuzmich, A
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5121357/
https://www.ncbi.nlm.nih.gov/pubmed/27869195
http://dx.doi.org/10.1038/ncomms13618
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author Li, Lin
Kuzmich, A
author_facet Li, Lin
Kuzmich, A
author_sort Li, Lin
collection PubMed
description Realization of distributed quantum systems requires fast generation and long-term storage of quantum states. Ground atomic states enable memories with storage times in the range of a minute, however their relatively weak interactions do not allow fast creation of non-classical collective states. Rydberg atomic systems feature fast preparation of singly excited collective states and their efficient mapping into light, but storage times in these approaches have not yet exceeded a few microseconds. Here we demonstrate a system that combines fast quantum state generation and long-term storage. An initially prepared coherent state of an atomic memory is transformed into a non-classical collective atomic state by Rydberg-level interactions in less than a microsecond. By sheltering the quantum state in the ground atomic levels, the storage time is increased by almost two orders of magnitude. This advance opens a door to a number of quantum protocols for scalable generation and distribution of entanglement.
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spelling pubmed-51213572016-12-02 Quantum memory with strong and controllable Rydberg-level interactions Li, Lin Kuzmich, A Nat Commun Article Realization of distributed quantum systems requires fast generation and long-term storage of quantum states. Ground atomic states enable memories with storage times in the range of a minute, however their relatively weak interactions do not allow fast creation of non-classical collective states. Rydberg atomic systems feature fast preparation of singly excited collective states and their efficient mapping into light, but storage times in these approaches have not yet exceeded a few microseconds. Here we demonstrate a system that combines fast quantum state generation and long-term storage. An initially prepared coherent state of an atomic memory is transformed into a non-classical collective atomic state by Rydberg-level interactions in less than a microsecond. By sheltering the quantum state in the ground atomic levels, the storage time is increased by almost two orders of magnitude. This advance opens a door to a number of quantum protocols for scalable generation and distribution of entanglement. Nature Publishing Group 2016-11-21 /pmc/articles/PMC5121357/ /pubmed/27869195 http://dx.doi.org/10.1038/ncomms13618 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Li, Lin
Kuzmich, A
Quantum memory with strong and controllable Rydberg-level interactions
title Quantum memory with strong and controllable Rydberg-level interactions
title_full Quantum memory with strong and controllable Rydberg-level interactions
title_fullStr Quantum memory with strong and controllable Rydberg-level interactions
title_full_unstemmed Quantum memory with strong and controllable Rydberg-level interactions
title_short Quantum memory with strong and controllable Rydberg-level interactions
title_sort quantum memory with strong and controllable rydberg-level interactions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5121357/
https://www.ncbi.nlm.nih.gov/pubmed/27869195
http://dx.doi.org/10.1038/ncomms13618
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