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Journal article : Letter

Robust quantum memory in a trapped-ion quantum network node

Abstract:

We integrate a long-lived memory qubit into a mixed-species trapped-ion quantum network node. Ion-photon entanglement first generated with a network qubit in 88Sr+ is transferred to 43Ca+ with 0.977(7) fidelity, and mapped to a robust memory qubit. We then entangle the network qubit with another photon, which does not affect the memory qubit. We perform quantum state tomography to show that the fidelity of ion-photon entanglement decays ∼ 70 times slower on the memory qubit. Dynamical decoupl...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.130.090803

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Oxford college:
Linacre College
Role:
Author
ORCID:
0000-0002-2241-885X
More from this funder
Name:
European Commission
Grant:
820495
More from this funder
Name:
Engineering and Physical Sciences Research Council
Grant:
EP/M013243/1
Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
130
Article number:
090803
Publication date:
2023-03-03
Acceptance date:
2023-01-19
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Keywords:
Subtype:
Letter
Pubs id:
1324741
Local pid:
pubs:1324741
Deposit date:
2023-01-21

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