Memory coherence of a sympathetically cooled trapped-ion qubit
We demonstrate sympathetic cooling of a C 43 a+ trapped-ion "memory" qubit by a C 40 a+ "coolant" ion sufficiently near the ground state of motion for fault-tolerant quantum logic, while maintaining coherence of the qubit. This is an essential ingredient in trapped-ion quantum co...
| প্রধান লেখক: | , , , , , , |
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| বিন্যাস: | Journal article |
| ভাষা: | English |
| প্রকাশিত: |
2009
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| _version_ | 1826273498659553280 |
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| author | Home, J McDonnell, M Szwer, D Keitch, B Lucas, D Stacey, D Steane, A |
| author_facet | Home, J McDonnell, M Szwer, D Keitch, B Lucas, D Stacey, D Steane, A |
| author_sort | Home, J |
| collection | OXFORD |
| description | We demonstrate sympathetic cooling of a C 43 a+ trapped-ion "memory" qubit by a C 40 a+ "coolant" ion sufficiently near the ground state of motion for fault-tolerant quantum logic, while maintaining coherence of the qubit. This is an essential ingredient in trapped-ion quantum computers. The isotope shifts are sufficient to suppress decoherence and phase shifts of the memory qubit due to the cooling light which illuminates both ions. We measure the qubit coherence during ten cycles of sideband cooling, finding a coherence loss of 3.3% per cooling cycle. The natural limit of the method is O (10-4) infidelity per cooling cycle. © 2009 The American Physical Society. |
| first_indexed | 2024-03-06T22:29:06Z |
| format | Journal article |
| id | oxford-uuid:57ae656d-0c28-4849-94c6-f70bf925ad18 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:29:06Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:57ae656d-0c28-4849-94c6-f70bf925ad182022-03-26T16:58:16ZMemory coherence of a sympathetically cooled trapped-ion qubitJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:57ae656d-0c28-4849-94c6-f70bf925ad18EnglishSymplectic Elements at Oxford2009Home, JMcDonnell, MSzwer, DKeitch, BLucas, DStacey, DSteane, AWe demonstrate sympathetic cooling of a C 43 a+ trapped-ion "memory" qubit by a C 40 a+ "coolant" ion sufficiently near the ground state of motion for fault-tolerant quantum logic, while maintaining coherence of the qubit. This is an essential ingredient in trapped-ion quantum computers. The isotope shifts are sufficient to suppress decoherence and phase shifts of the memory qubit due to the cooling light which illuminates both ions. We measure the qubit coherence during ten cycles of sideband cooling, finding a coherence loss of 3.3% per cooling cycle. The natural limit of the method is O (10-4) infidelity per cooling cycle. © 2009 The American Physical Society. |
| spellingShingle | Home, J McDonnell, M Szwer, D Keitch, B Lucas, D Stacey, D Steane, A Memory coherence of a sympathetically cooled trapped-ion qubit |
| title | Memory coherence of a sympathetically cooled trapped-ion qubit |
| title_full | Memory coherence of a sympathetically cooled trapped-ion qubit |
| title_fullStr | Memory coherence of a sympathetically cooled trapped-ion qubit |
| title_full_unstemmed | Memory coherence of a sympathetically cooled trapped-ion qubit |
| title_short | Memory coherence of a sympathetically cooled trapped-ion qubit |
| title_sort | memory coherence of a sympathetically cooled trapped ion qubit |
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