Decoherence and quantum error correction in frequency standards
The precision of frequency measurements performed on trapped ions in the presence of decoherence is analysed. In particular, standard Ramsey spectroscopy on uncorrelated ions and optimal measurements on maximally entangled states are proved to lead to the same resolution, while the best precision is...
| Main Authors: | , , , , |
|---|---|
| Format: | Conference item |
| Published: |
2000
|
| _version_ | 1797101374948769792 |
|---|---|
| author | Macchiavello, C Huelga, S Cirac, J Ekert, A Plenio, M |
| author_facet | Macchiavello, C Huelga, S Cirac, J Ekert, A Plenio, M |
| author_sort | Macchiavello, C |
| collection | OXFORD |
| description | The precision of frequency measurements performed on trapped ions in the presence of decoherence is analysed. In particular, standard Ramsey spectroscopy on uncorrelated ions and optimal measurements on maximally entangled states are proved to lead to the same resolution, while the best precision is achieved using partially entangled preparations. The use of symmetrisation procedures is proposed and it is shown how this allows to overcome even the optimal precision achievable when both the initial preparation and the final measurement are optimized. |
| first_indexed | 2024-03-07T05:50:59Z |
| format | Conference item |
| id | oxford-uuid:e8dfb3ca-bd5f-4c16-89ca-5f6bee5af898 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:50:59Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:e8dfb3ca-bd5f-4c16-89ca-5f6bee5af8982022-03-27T10:49:59ZDecoherence and quantum error correction in frequency standardsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:e8dfb3ca-bd5f-4c16-89ca-5f6bee5af898Symplectic Elements at Oxford2000Macchiavello, CHuelga, SCirac, JEkert, APlenio, MThe precision of frequency measurements performed on trapped ions in the presence of decoherence is analysed. In particular, standard Ramsey spectroscopy on uncorrelated ions and optimal measurements on maximally entangled states are proved to lead to the same resolution, while the best precision is achieved using partially entangled preparations. The use of symmetrisation procedures is proposed and it is shown how this allows to overcome even the optimal precision achievable when both the initial preparation and the final measurement are optimized. |
| spellingShingle | Macchiavello, C Huelga, S Cirac, J Ekert, A Plenio, M Decoherence and quantum error correction in frequency standards |
| title | Decoherence and quantum error correction in frequency standards |
| title_full | Decoherence and quantum error correction in frequency standards |
| title_fullStr | Decoherence and quantum error correction in frequency standards |
| title_full_unstemmed | Decoherence and quantum error correction in frequency standards |
| title_short | Decoherence and quantum error correction in frequency standards |
| title_sort | decoherence and quantum error correction in frequency standards |
| work_keys_str_mv | AT macchiavelloc decoherenceandquantumerrorcorrectioninfrequencystandards AT huelgas decoherenceandquantumerrorcorrectioninfrequencystandards AT ciracj decoherenceandquantumerrorcorrectioninfrequencystandards AT ekerta decoherenceandquantumerrorcorrectioninfrequencystandards AT pleniom decoherenceandquantumerrorcorrectioninfrequencystandards |