Optimal port-based teleportation

Deterministic port-based teleportation (dPBT) protocol is a scheme where a quantum state is guaranteed to be transferred to another system without unitary correction. We characterise the best achievable performance of the dPBT when both the resource state and the measurement is optimised. Surprising...

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Bibliographic Details
Published in:New Journal of Physics
Main Authors: Marek Mozrzymas, Michał Studziński, Sergii Strelchuk, Michał Horodecki
Format: Article
Language:English
Published: IOP Publishing 2018-01-01
Subjects:
quantum information
representation theory
teleportation
Online Access:https://doi.org/10.1088/1367-2630/aab8e7
Description
Summary:Deterministic port-based teleportation (dPBT) protocol is a scheme where a quantum state is guaranteed to be transferred to another system without unitary correction. We characterise the best achievable performance of the dPBT when both the resource state and the measurement is optimised. Surprisingly, the best possible fidelity for an arbitrary number of ports and dimension of the teleported state is given by the largest eigenvalue of a particular matrix—Teleportation Matrix. It encodes the relationship between a certain set of Young diagrams and emerges as the optimal solution to the relevant semidefinite programme.
ISSN:1367-2630

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