Continuous variable quantum teleportation, $U(2)$ invariant squeezing and non-Gaussian resource states

• URL: http://arxiv.org/abs/2502.17182v1
• Date: Mon, 24 Feb 2025 14:14:42 GMT
• Title: Continuous variable quantum teleportation, $U(2)$ invariant squeezing and non-Gaussian resource states
• Authors: Mohak Sharma, Chandan Kumar, Shikhar Arora, Arvind,
• Abstract summary: We investigate the role of quadrature squeezing in the quantum teleportation protocol for coherent states, using non-Gaussian resource states.<n>We show that the presence of such non-classicality in non-Gaussian resource states is not necessary for successful quantum teleportation.
• Score: 4.2073870486782035
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

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