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...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal article |
| Language: | English |
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Institute of Physics
2006
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| Subjects: |
| _version_ | 1826266466108833792 |
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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 |
| author2 | Deutsche Physikalische Gesellschaft |
| author_facet | Deutsche Physikalische Gesellschaft 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. |
| first_indexed | 2024-03-06T20:39:22Z |
| format | Journal article |
| id | oxford-uuid:33bfb527-2579-447c-8cb1-01e35992051c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:39:22Z |
| publishDate | 2006 |
| publisher | Institute of Physics |
| record_format | dspace |
| spelling | oxford-uuid:33bfb527-2579-447c-8cb1-01e35992051c2022-03-26T13:22:02ZDeterministic entanglement and tomography of ion-spin qubitsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:33bfb527-2579-447c-8cb1-01e35992051cPhysicsAtomic and laser physicsEnglishOxford University Research Archive - ValetInstitute of Physics2006Home, JMcDonnell, MLucas, DImreh, GKeitch, BSzwer, DThomas, NWebster, SStacey, DSteane, ADeutsche Physikalische GesellschaftAdvanced Research and Development ActivitiyWe 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. |
| spellingShingle | Physics Atomic and laser physics 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 |
| topic | Physics Atomic and laser physics |
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