Non-maximally entangled mixed states of X and non-X types as teleportation channels
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910978508062720 |
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| author | Pandey, Anushree Roy, Sovik Ali, Md. Manirul Ghosh, Biplab |
| author_facet | Pandey, Anushree Roy, Sovik Ali, Md. Manirul Ghosh, Biplab |
| contents | Mixed spin-1/2 states violating Bell-CHSH inequality is useful for teleportation. There exist states which do not violate Bell-inequality but is still useful as teleportation channels. Maximally entangled mixed states of Munro class and Ishizaka-Hiroshima class are such types which although satisfy Bell-CHSH inequality, yet can perform better as teleportation channels for a given degree of mixedness\cite{adhikari2010}. In this work we construct class of mixed states of non-maximally entangled types whose efficacy as teleportation channels have been studied. For certain range of state parameters, these non-maximally entangled mixed states performs better as quantum teleportation channels than certain maximally entangled mixed states (such as Werner state). These constructed states, though entangled, satisfy Bell-CHSH inequality implying further that violation of local inequalities may not be good indicators of their ability to complete quantum processing tasks such as teleportation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12824 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-maximally entangled mixed states of X and non-X types as teleportation channels Pandey, Anushree Roy, Sovik Ali, Md. Manirul Ghosh, Biplab Quantum Physics Mixed spin-1/2 states violating Bell-CHSH inequality is useful for teleportation. There exist states which do not violate Bell-inequality but is still useful as teleportation channels. Maximally entangled mixed states of Munro class and Ishizaka-Hiroshima class are such types which although satisfy Bell-CHSH inequality, yet can perform better as teleportation channels for a given degree of mixedness\cite{adhikari2010}. In this work we construct class of mixed states of non-maximally entangled types whose efficacy as teleportation channels have been studied. For certain range of state parameters, these non-maximally entangled mixed states performs better as quantum teleportation channels than certain maximally entangled mixed states (such as Werner state). These constructed states, though entangled, satisfy Bell-CHSH inequality implying further that violation of local inequalities may not be good indicators of their ability to complete quantum processing tasks such as teleportation. |
| title | Non-maximally entangled mixed states of X and non-X types as teleportation channels |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2402.12824 |