Nonclassical resource for continuous variable telecloning with non-Gaussian advantage
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866916308346470400 |
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| author | Das, Sudipta Gupta, Rivu Dhar, Himadri Shekhar De, Aditi Sen |
| author_facet | Das, Sudipta Gupta, Rivu Dhar, Himadri Shekhar De, Aditi Sen |
| contents | The telecloning protocol distributes quantum states from a single sender to multiple receivers via a shared entangled state by exploiting the notions of teleportation and approximate cloning. We investigate the optimal telecloning fidelities obtained using both Gaussian and non-Gaussian shared resources. When the shared non-Gaussian state is created by subtracting photons from both the modes of the Gaussian two-mode squeezed vacuum state, we demonstrate that higher telecloning fidelities can be achieved in comparison with its Gaussian counterpart. To quantify this advantage, we introduce a quadrature-based nonclassicality measure, which is capable of estimating the fidelity of the clones, both with Gaussian and non-Gaussian resource states. We further provide a linear optical setup for asymmetric telecloning of continuous variable states using a multimode entangled state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_13586 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Nonclassical resource for continuous variable telecloning with non-Gaussian advantage Das, Sudipta Gupta, Rivu Dhar, Himadri Shekhar De, Aditi Sen Quantum Physics The telecloning protocol distributes quantum states from a single sender to multiple receivers via a shared entangled state by exploiting the notions of teleportation and approximate cloning. We investigate the optimal telecloning fidelities obtained using both Gaussian and non-Gaussian shared resources. When the shared non-Gaussian state is created by subtracting photons from both the modes of the Gaussian two-mode squeezed vacuum state, we demonstrate that higher telecloning fidelities can be achieved in comparison with its Gaussian counterpart. To quantify this advantage, we introduce a quadrature-based nonclassicality measure, which is capable of estimating the fidelity of the clones, both with Gaussian and non-Gaussian resource states. We further provide a linear optical setup for asymmetric telecloning of continuous variable states using a multimode entangled state. |
| title | Nonclassical resource for continuous variable telecloning with non-Gaussian advantage |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2312.13586 |