High-fidelity quantum logic gates using trapped-ion hyperfine qubits
We demonstrate laser-driven two-qubit and single-qubit logic gates with fidelities 99.9(1)% and 99.9934(3)% respectively, significantly above the ≈ 99% minimum threshold level required for faulttolerant quantum computation, using qubits stored in hyperfine ground states of calcium-43 ions held in a...
| Main Authors: | , , , , |
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| Format: | Journal article |
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American Physical Society
2016
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| _version_ | 1797061910810591232 |
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| author | Ballance, C Harty, T Linke, N Sepiol, M Lucas, D |
| author_facet | Ballance, C Harty, T Linke, N Sepiol, M Lucas, D |
| author_sort | Ballance, C |
| collection | OXFORD |
| description | We demonstrate laser-driven two-qubit and single-qubit logic gates with fidelities 99.9(1)% and 99.9934(3)% respectively, significantly above the ≈ 99% minimum threshold level required for faulttolerant quantum computation, using qubits stored in hyperfine ground states of calcium-43 ions held in a room-temperature trap. We study the speed/fidelity trade-off for the two-qubit gate, for gate times between 3.8 μs and 520 μs, and develop a theoretical error model which is consistent with the data and which allows us to identify the principal technical sources of infidelity. |
| first_indexed | 2024-03-06T20:37:56Z |
| format | Journal article |
| id | oxford-uuid:3341be73-e6f7-40a7-b9d6-295d6f4242b2 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:37:56Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:3341be73-e6f7-40a7-b9d6-295d6f4242b22022-03-26T13:19:17ZHigh-fidelity quantum logic gates using trapped-ion hyperfine qubitsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3341be73-e6f7-40a7-b9d6-295d6f4242b2Symplectic Elements at OxfordAmerican Physical Society2016Ballance, CHarty, TLinke, NSepiol, MLucas, DWe demonstrate laser-driven two-qubit and single-qubit logic gates with fidelities 99.9(1)% and 99.9934(3)% respectively, significantly above the ≈ 99% minimum threshold level required for faulttolerant quantum computation, using qubits stored in hyperfine ground states of calcium-43 ions held in a room-temperature trap. We study the speed/fidelity trade-off for the two-qubit gate, for gate times between 3.8 μs and 520 μs, and develop a theoretical error model which is consistent with the data and which allows us to identify the principal technical sources of infidelity. |
| spellingShingle | Ballance, C Harty, T Linke, N Sepiol, M Lucas, D High-fidelity quantum logic gates using trapped-ion hyperfine qubits |
| title | High-fidelity quantum logic gates using trapped-ion hyperfine qubits |
| title_full | High-fidelity quantum logic gates using trapped-ion hyperfine qubits |
| title_fullStr | High-fidelity quantum logic gates using trapped-ion hyperfine qubits |
| title_full_unstemmed | High-fidelity quantum logic gates using trapped-ion hyperfine qubits |
| title_short | High-fidelity quantum logic gates using trapped-ion hyperfine qubits |
| title_sort | high fidelity quantum logic gates using trapped ion hyperfine qubits |
| work_keys_str_mv | AT ballancec highfidelityquantumlogicgatesusingtrappedionhyperfinequbits AT hartyt highfidelityquantumlogicgatesusingtrappedionhyperfinequbits AT linken highfidelityquantumlogicgatesusingtrappedionhyperfinequbits AT sepiolm highfidelityquantumlogicgatesusingtrappedionhyperfinequbits AT lucasd highfidelityquantumlogicgatesusingtrappedionhyperfinequbits |