Robust quantum memory in a trapped-ion quantum network node
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 pho...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Physical Society
2023
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| _version_ | 1826309473001537536 |
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| author | Drmota, P Main, D Nadlinger, DP Nichol, B Weber, MA Ainley, EM Agrawal, A Srinivas, R Araneda, G Ballance, CJ Lucas, D |
| author_facet | Drmota, P Main, D Nadlinger, DP Nichol, B Weber, MA Ainley, EM Agrawal, A Srinivas, R Araneda, G Ballance, CJ Lucas, D |
| author_sort | Drmota, P |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T07:34:48Z |
| format | Journal article |
| id | oxford-uuid:5d775fa9-cf99-43ff-8aa6-34163b496ef1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:34:48Z |
| publishDate | 2023 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:5d775fa9-cf99-43ff-8aa6-34163b496ef12023-03-06T11:04:19ZRobust quantum memory in a trapped-ion quantum network nodeJournal articlehttp://purl.org/coar/resource_type/c_545buuid:5d775fa9-cf99-43ff-8aa6-34163b496ef1EnglishSymplectic ElementsAmerican Physical Society2023Drmota, PMain, DNadlinger, DPNichol, BWeber, MAAinley, EMAgrawal, ASrinivas, RAraneda, GBallance, CJLucas, DWe 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. |
| spellingShingle | Drmota, P Main, D Nadlinger, DP Nichol, B Weber, MA Ainley, EM Agrawal, A Srinivas, R Araneda, G Ballance, CJ Lucas, D Robust quantum memory in a trapped-ion quantum network node |
| title | Robust quantum memory in a trapped-ion quantum network node |
| title_full | Robust quantum memory in a trapped-ion quantum network node |
| title_fullStr | Robust quantum memory in a trapped-ion quantum network node |
| title_full_unstemmed | Robust quantum memory in a trapped-ion quantum network node |
| title_short | Robust quantum memory in a trapped-ion quantum network node |
| title_sort | robust quantum memory in a trapped ion quantum network node |
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