Natural metric for quantum information theory
We study in detail a very natural metric for quantum states. This new proposal has two basic ingredients: entropy and purification. The metric for two mixed states is defined as the square root of the entropy of the average of representative purifications of those states. Some basic properties are a...
| Autores principales: | , , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2009
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/130626 |
| Aporte de: |
| id |
I19-R120-10915-130626 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Quantum information theory Entanglement measures, witnesses, and other characterizations State reconstruction, quantum tomography |
| spellingShingle |
Física Quantum information theory Entanglement measures, witnesses, and other characterizations State reconstruction, quantum tomography Lamberti, Pedro W. Portesi, Mariela Adelina Sparacino, J. Natural metric for quantum information theory |
| topic_facet |
Física Quantum information theory Entanglement measures, witnesses, and other characterizations State reconstruction, quantum tomography |
| description |
We study in detail a very natural metric for quantum states. This new proposal has two basic ingredients: entropy and purification. The metric for two mixed states is defined as the square root of the entropy of the average of representative purifications of those states. Some basic properties are analyzed and its relation to other distances is investigated. As an illustrative application, the proposed metric is evaluated for one-qubit mixed states. |
| format |
Articulo Preprint |
| author |
Lamberti, Pedro W. Portesi, Mariela Adelina Sparacino, J. |
| author_facet |
Lamberti, Pedro W. Portesi, Mariela Adelina Sparacino, J. |
| author_sort |
Lamberti, Pedro W. |
| title |
Natural metric for quantum information theory |
| title_short |
Natural metric for quantum information theory |
| title_full |
Natural metric for quantum information theory |
| title_fullStr |
Natural metric for quantum information theory |
| title_full_unstemmed |
Natural metric for quantum information theory |
| title_sort |
natural metric for quantum information theory |
| publishDate |
2009 |
| url |
http://sedici.unlp.edu.ar/handle/10915/130626 |
| work_keys_str_mv |
AT lambertipedrow naturalmetricforquantuminformationtheory AT portesimarielaadelina naturalmetricforquantuminformationtheory AT sparacinoj naturalmetricforquantuminformationtheory |
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Repositorios |
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1764820452576854019 |