Journal article
High-fidelity quantum logic gates using trapped-ion hyperfine qubits
- Abstract:
- 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.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 1.8MB, Terms of use)
-
- Publisher copy:
- 10.1103/PhysRevLett.117.060504
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 117
- Issue:
- 6
- Article number:
- 060504
- Publication date:
- 2016-06-01
- Acceptance date:
- 2016-06-10
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- Pubs id:
-
pubs:637414
- UUID:
-
uuid:3341be73-e6f7-40a7-b9d6-295d6f4242b2
- Local pid:
-
pubs:637414
- Source identifiers:
-
637414
- Deposit date:
-
2016-07-11
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2016
- Notes:
- Copyright © 2016 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: http://dx.doi.org/10.1103/PhysRevLett.117.060504
If you are the owner of this record, you can report an update to it here: Report update to this record