Experimental free-space quantum teleportation
Quantum teleportation is central to the practical realization of quantum communication. Although the first proof-of-principle demonstration was reported in 1997 by the Innsbruck and Rome groups, long-distance teleportation has so far only been realized in fibre with lengths of hundreds of metres. An...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2010
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| _version_ | 1797066177346797568 |
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| author | Jin, X Ren, J Yang, B Yi, Z Zhou, F Xu, X Wang, S Yang, D Hu, Y Jiang, S Yang, T Yin, H Chen, K Peng, C Pan, J |
| author_facet | Jin, X Ren, J Yang, B Yi, Z Zhou, F Xu, X Wang, S Yang, D Hu, Y Jiang, S Yang, T Yin, H Chen, K Peng, C Pan, J |
| author_sort | Jin, X |
| collection | OXFORD |
| description | Quantum teleportation is central to the practical realization of quantum communication. Although the first proof-of-principle demonstration was reported in 1997 by the Innsbruck and Rome groups, long-distance teleportation has so far only been realized in fibre with lengths of hundreds of metres. An optical free-space link is highly desirable for extending the transfer distance, because of its low atmospheric absorption for certain ranges of wavelength. By following the Rome scheme, which allows a full Bell-state measurement, we report free-space implementation of quantum teleportation over 16km. An active feed-forward technique has been developed to enable real-time information transfer. An average fidelity of 89%, well beyond the classical limit of 2/3, is achieved. Our experiment has realized all of the non-local aspects of the original teleportation scheme and is equivalent to it up to a local unitary operation. Our result confirms the feasibility of space-based experiments, and is an important step towards quantum-communication applications on a global scale. © 2010 Macmillan Publishers Limited. All rights reserved. |
| first_indexed | 2024-03-06T21:38:41Z |
| format | Journal article |
| id | oxford-uuid:47240743-af41-4daa-b7c9-84dbc42c7f1e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:38:41Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:47240743-af41-4daa-b7c9-84dbc42c7f1e2022-03-26T15:18:21ZExperimental free-space quantum teleportationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:47240743-af41-4daa-b7c9-84dbc42c7f1eEnglishSymplectic Elements at Oxford2010Jin, XRen, JYang, BYi, ZZhou, FXu, XWang, SYang, DHu, YJiang, SYang, TYin, HChen, KPeng, CPan, JQuantum teleportation is central to the practical realization of quantum communication. Although the first proof-of-principle demonstration was reported in 1997 by the Innsbruck and Rome groups, long-distance teleportation has so far only been realized in fibre with lengths of hundreds of metres. An optical free-space link is highly desirable for extending the transfer distance, because of its low atmospheric absorption for certain ranges of wavelength. By following the Rome scheme, which allows a full Bell-state measurement, we report free-space implementation of quantum teleportation over 16km. An active feed-forward technique has been developed to enable real-time information transfer. An average fidelity of 89%, well beyond the classical limit of 2/3, is achieved. Our experiment has realized all of the non-local aspects of the original teleportation scheme and is equivalent to it up to a local unitary operation. Our result confirms the feasibility of space-based experiments, and is an important step towards quantum-communication applications on a global scale. © 2010 Macmillan Publishers Limited. All rights reserved. |
| spellingShingle | Jin, X Ren, J Yang, B Yi, Z Zhou, F Xu, X Wang, S Yang, D Hu, Y Jiang, S Yang, T Yin, H Chen, K Peng, C Pan, J Experimental free-space quantum teleportation |
| title | Experimental free-space quantum teleportation |
| title_full | Experimental free-space quantum teleportation |
| title_fullStr | Experimental free-space quantum teleportation |
| title_full_unstemmed | Experimental free-space quantum teleportation |
| title_short | Experimental free-space quantum teleportation |
| title_sort | experimental free space quantum teleportation |
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