Deterministic entanglement and tomography of ion-spin qubits
We have implemented a universal quantum logic gate between qubits stored in the spin state of a pair of trapped 40Ca ions. An initial product state was driven to a maximally entangled state deterministically, with 83% fidelity. We present a general approach to quantum state tomography which achieves...
| Hoofdauteurs: | , , , , , , , , , |
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| Formaat: | Journal article |
| Gepubliceerd in: |
2006
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| _version_ | 1826294651749924864 |
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| author | Home, J McDonnell, M Lucas, D Imreh, G Keitch, B Szwer, D Thomas, N Webster, S Stacey, D Steane, A |
| author_facet | Home, J McDonnell, M Lucas, D Imreh, G Keitch, B Szwer, D Thomas, N Webster, S Stacey, D Steane, A |
| author_sort | Home, J |
| collection | OXFORD |
| description | We have implemented a universal quantum logic gate between qubits stored in the spin state of a pair of trapped 40Ca ions. An initial product state was driven to a maximally entangled state deterministically, with 83% fidelity. We present a general approach to quantum state tomography which achieves good robustness to experimental noise and drift, and use it to measure the spin state of the ions. We find the entanglement of formation is 0.54. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
| first_indexed | 2024-03-07T03:48:58Z |
| format | Journal article |
| id | oxford-uuid:c08be34e-6872-4135-ad5c-8a6b8e68097d |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:48:58Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:c08be34e-6872-4135-ad5c-8a6b8e68097d2022-03-27T05:55:12ZDeterministic entanglement and tomography of ion-spin qubitsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c08be34e-6872-4135-ad5c-8a6b8e68097dSymplectic Elements at Oxford2006Home, JMcDonnell, MLucas, DImreh, GKeitch, BSzwer, DThomas, NWebster, SStacey, DSteane, AWe have implemented a universal quantum logic gate between qubits stored in the spin state of a pair of trapped 40Ca ions. An initial product state was driven to a maximally entangled state deterministically, with 83% fidelity. We present a general approach to quantum state tomography which achieves good robustness to experimental noise and drift, and use it to measure the spin state of the ions. We find the entanglement of formation is 0.54. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
| spellingShingle | Home, J McDonnell, M Lucas, D Imreh, G Keitch, B Szwer, D Thomas, N Webster, S Stacey, D Steane, A Deterministic entanglement and tomography of ion-spin qubits |
| title | Deterministic entanglement and tomography of ion-spin qubits |
| title_full | Deterministic entanglement and tomography of ion-spin qubits |
| title_fullStr | Deterministic entanglement and tomography of ion-spin qubits |
| title_full_unstemmed | Deterministic entanglement and tomography of ion-spin qubits |
| title_short | Deterministic entanglement and tomography of ion-spin qubits |
| title_sort | deterministic entanglement and tomography of ion spin qubits |
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