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Authenticated teleportation with one-sided trust

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 $\sigma_X, \sigma_Z$ 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.
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Contributor : Damian Markham <>
Submitted on : Monday, June 24, 2019 - 3:16:39 PM
Last modification on : Tuesday, March 23, 2021 - 9:28:03 AM

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Anupama Unnikrishnan, Damian Markham. Authenticated teleportation with one-sided trust. Physical Review A, American Physical Society, 2019, 100 (3), pp.032314. ⟨10.1103/PhysRevA.100.032314⟩. ⟨hal-02163733⟩



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