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 2018-05, Vol.20 (5), p.53006
Main Authors: Mozrzymas, Marek, Studzi ski, Micha, Strelchuk, Sergii, Horodecki, Micha
Format: Article
Language:English
Subjects:
Eigenvalues
Physics
quantum information
Quantum teleportation
representation theory
teleportation
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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
1367-2630
DOI:10.1088/1367-2630/aab8e7