Geometric phases for mixed states in interferometry.
We provide a physical prescription based on interferometry for introducing the total phase of a mixed state undergoing unitary evolution, which has been an elusive concept in the past. We define the parallel transport condition that provides a connection form for obtaining the geometric phase for mi...
| Κύριοι συγγραφείς: | , , , , , , |
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| Μορφή: | Journal article |
| Γλώσσα: | English |
| Έκδοση: |
American Inst of Physics
2000
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| _version_ | 1826283340071698432 |
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| author | Sjöqvist, E Pati, A Ekert, A Anandan, J Ericsson, M Oi, D Vedral, V |
| author_facet | Sjöqvist, E Pati, A Ekert, A Anandan, J Ericsson, M Oi, D Vedral, V |
| author_sort | Sjöqvist, E |
| collection | OXFORD |
| description | We provide a physical prescription based on interferometry for introducing the total phase of a mixed state undergoing unitary evolution, which has been an elusive concept in the past. We define the parallel transport condition that provides a connection form for obtaining the geometric phase for mixed states. The expression for the geometric phase for mixed state reduces to well known formulas in the pure state case when a system undergoes noncyclic and unitary quantum evolution. |
| first_indexed | 2024-03-07T00:57:26Z |
| format | Journal article |
| id | oxford-uuid:888f4720-855c-48a9-8706-695d60da8792 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:57:26Z |
| publishDate | 2000 |
| publisher | American Inst of Physics |
| record_format | dspace |
| spelling | oxford-uuid:888f4720-855c-48a9-8706-695d60da87922022-03-26T22:18:11ZGeometric phases for mixed states in interferometry.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:888f4720-855c-48a9-8706-695d60da8792EnglishSymplectic Elements at OxfordAmerican Inst of Physics2000Sjöqvist, EPati, AEkert, AAnandan, JEricsson, MOi, DVedral, VWe provide a physical prescription based on interferometry for introducing the total phase of a mixed state undergoing unitary evolution, which has been an elusive concept in the past. We define the parallel transport condition that provides a connection form for obtaining the geometric phase for mixed states. The expression for the geometric phase for mixed state reduces to well known formulas in the pure state case when a system undergoes noncyclic and unitary quantum evolution. |
| spellingShingle | Sjöqvist, E Pati, A Ekert, A Anandan, J Ericsson, M Oi, D Vedral, V Geometric phases for mixed states in interferometry. |
| title | Geometric phases for mixed states in interferometry. |
| title_full | Geometric phases for mixed states in interferometry. |
| title_fullStr | Geometric phases for mixed states in interferometry. |
| title_full_unstemmed | Geometric phases for mixed states in interferometry. |
| title_short | Geometric phases for mixed states in interferometry. |
| title_sort | geometric phases for mixed states in interferometry |
| work_keys_str_mv | AT sjoqviste geometricphasesformixedstatesininterferometry AT patia geometricphasesformixedstatesininterferometry AT ekerta geometricphasesformixedstatesininterferometry AT anandanj geometricphasesformixedstatesininterferometry AT ericssonm geometricphasesformixedstatesininterferometry AT oid geometricphasesformixedstatesininterferometry AT vedralv geometricphasesformixedstatesininterferometry |