Unifying parameter estimation and the Deutsch-Jozsa algorithm for continuous variables
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| 74467_1.pdf | 137Kb | Adobe PDF | View |
| Title | Unifying parameter estimation and the Deutsch-Jozsa algorithm for continuous variables |
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| Author | Zwierz, Marcin; ́rez-Delgado, Carlos A. Pe; Kok, Pieter |
| Journal Name | Physical Review A |
| Year Published | 2010 |
| Place of publication | United States |
| Publisher | American Physical Society |
| Abstract | We reveal a close relationship between quantum metrology and the Deutsch-Jozsa algorithm on continuous- variable quantum systems. We develop a general procedure, characterized by two parameters, that unifies parameter estimation and the Deutsch-Jozsa algorithm. Depending on which parameter we keep constant, the procedure implements either the parameter-estimation protocol or the Deutsch-Jozsa algorithm. The parameter-estimation part of the procedure attains the Heisenberg limit and is therefore optimal. Due to the use of approximate normalizable continuous-variable eigenstates, the Deutsch-Jozsa algorithm is probabilistic. The procedure estimates a value of an unknown parameter and solves the Deutsch-Jozsa problem without the use of any entanglement. |
| Peer Reviewed | Yes |
| Published | Yes |
| Alternative URI | http://dx.doi.org/10.1103/PhysRevA.82.042320 |
| Copyright Statement | Copyright 2010 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version. |
| Volume | 82 |
| Issue Number | 4 |
| Page from | 042320-1 |
| Page to | 042320-7 |
| ISSN | 1050-2947 |
| Date Accessioned | 2011-11-30 |
| Date Available | 2012-06-07T21:59:35Z |
| Language | en_US |
| Faculty | Faculty of Science, Environment, Engineering and Technology |
| Subject | Quantum Information, Computation and Communication; Quantum Optics |
| URI | http://hdl.handle.net/10072/42808 |
| Publication Type | Journal Articles (Refereed Article) |
| Publication Type Code | c1x |
Please use this identifier to cite this record: http://hdl.handle.net/10072/42808
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