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 decoupling further extends the storage time; we measure an ion-photon entanglement fidelity of 0.81(4) after 10 s.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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Access Document
- Files:
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-
(Preview, Accepted manuscript, pdf, 735.4KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevLett.130.090803
Authors
- 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:
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1079-7114
- ISSN:
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0031-9007
- Language:
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English
- Keywords:
- Subtype:
-
Letter
- Pubs id:
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1324741
- Local pid:
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pubs:1324741
- Deposit date:
-
2023-01-21
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2023
- Rights statement:
- © 2023 American Physical Society
- Notes:
- This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: https://doi.org/10.1103/PhysRevLett.130.090803
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