Continuous variable quantum teleportation, $U(2)$ invariant squeezing and non-Gaussian resource states
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909508366761984 |
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| author | Sharma, Mohak Kumar, Chandan Arora, Shikhar Arvind |
| author_facet | Sharma, Mohak Kumar, Chandan Arora, Shikhar Arvind |
| contents | We investigate the role of quadrature squeezing in the quantum teleportation protocol for coherent states, using non-Gaussian resource states. For the two-mode systems, the non-Gaussian resource states that we use are obtained by an experimentally realizable scheme of photon subtraction, photon addition, and photon catalysis, on the two-mode squeezed vacuum, and two-mode squeezed thermal states. We first analyze the non-classical attribute of quadrature squeezing in these generated non-Gaussian states using the $U(2)$ invariant squeezing approach, which allows us to account for all possible quadratures. We then show that the presence of such non-classicality in non-Gaussian resource states is not necessary for successful quantum teleportation, a finding which is at variance with an earlier result in this direction. This result is important since it demonstrates how non-classicality other than quadrature squeezing present in the resource can be utilized for quantum teleportation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_17182 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Continuous variable quantum teleportation, $U(2)$ invariant squeezing and non-Gaussian resource states Sharma, Mohak Kumar, Chandan Arora, Shikhar Arvind Quantum Physics We investigate the role of quadrature squeezing in the quantum teleportation protocol for coherent states, using non-Gaussian resource states. For the two-mode systems, the non-Gaussian resource states that we use are obtained by an experimentally realizable scheme of photon subtraction, photon addition, and photon catalysis, on the two-mode squeezed vacuum, and two-mode squeezed thermal states. We first analyze the non-classical attribute of quadrature squeezing in these generated non-Gaussian states using the $U(2)$ invariant squeezing approach, which allows us to account for all possible quadratures. We then show that the presence of such non-classicality in non-Gaussian resource states is not necessary for successful quantum teleportation, a finding which is at variance with an earlier result in this direction. This result is important since it demonstrates how non-classicality other than quadrature squeezing present in the resource can be utilized for quantum teleportation. |
| title | Continuous variable quantum teleportation, $U(2)$ invariant squeezing and non-Gaussian resource states |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2502.17182 |