Developing the Deutsch-Hayden approach to quantum mechanics
The formalism of Deutsch and Hayden is a useful tool for describing quantum mechanics explicitly as local and unitary, and therefore quantum information theory as concerning a 'flow' of information between systems. In this paper we show that these physical descriptions of flow are unique,...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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2007
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| _version_ | 1797052241398464512 |
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| author | Hewitt-Horsman, C Vedral, V |
| author_facet | Hewitt-Horsman, C Vedral, V |
| author_sort | Hewitt-Horsman, C |
| collection | OXFORD |
| description | The formalism of Deutsch and Hayden is a useful tool for describing quantum mechanics explicitly as local and unitary, and therefore quantum information theory as concerning a 'flow' of information between systems. In this paper we show that these physical descriptions of flow are unique, and develop the approach further to include the measurement interaction and mixed states. We then give an analysis of entanglement swapping in this approach, showing that it does not in fact contain either nonlocal effects or any form of superluminal signalling. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
| first_indexed | 2024-03-06T18:29:38Z |
| format | Journal article |
| id | oxford-uuid:09337772-08c6-4182-b823-0e8440cf7456 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:29:38Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:09337772-08c6-4182-b823-0e8440cf74562022-03-26T09:16:59ZDeveloping the Deutsch-Hayden approach to quantum mechanicsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:09337772-08c6-4182-b823-0e8440cf7456EnglishSymplectic Elements at Oxford2007Hewitt-Horsman, CVedral, VThe formalism of Deutsch and Hayden is a useful tool for describing quantum mechanics explicitly as local and unitary, and therefore quantum information theory as concerning a 'flow' of information between systems. In this paper we show that these physical descriptions of flow are unique, and develop the approach further to include the measurement interaction and mixed states. We then give an analysis of entanglement swapping in this approach, showing that it does not in fact contain either nonlocal effects or any form of superluminal signalling. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
| spellingShingle | Hewitt-Horsman, C Vedral, V Developing the Deutsch-Hayden approach to quantum mechanics |
| title | Developing the Deutsch-Hayden approach to quantum mechanics |
| title_full | Developing the Deutsch-Hayden approach to quantum mechanics |
| title_fullStr | Developing the Deutsch-Hayden approach to quantum mechanics |
| title_full_unstemmed | Developing the Deutsch-Hayden approach to quantum mechanics |
| title_short | Developing the Deutsch-Hayden approach to quantum mechanics |
| title_sort | developing the deutsch hayden approach to quantum mechanics |
| work_keys_str_mv | AT hewitthorsmanc developingthedeutschhaydenapproachtoquantummechanics AT vedralv developingthedeutschhaydenapproachtoquantummechanics |