English

Authenticated teleportation with one-sided trust

Quantum Physics 2019-09-11 v2

Abstract

We introduce a protocol for authenticated teleportation, which can be proven secure even when the receiver does not trust their measurement devices, and is experimentally accessible. We use the technique of self-testing from the device-independent approach to quantum information, where we can characterise quantum states and measurements from the exhibited classical correlations alone. First, we derive self-testing bounds for the Bell state and Pauli σX,σZ\sigma_X, \sigma_Z measurements, that are robust enough to be implemented in the lab. Then, we use these to determine a lower bound on the fidelity of an untested entangled state to be used for teleportation. Finally, we apply our results to propose an experimentally feasible protocol for one-sided device-independent authenticated teleportation. This can be interpreted as a first practical authentication of a quantum channel, with additional one-sided device-independence.

Keywords

Cite

@article{arxiv.1905.02763,
  title  = {Authenticated teleportation with one-sided trust},
  author = {Anupama Unnikrishnan and Damian Markham},
  journal= {arXiv preprint arXiv:1905.02763},
  year   = {2019}
}

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published version

R2 v1 2026-06-23T08:59:40.240Z