QLunch: Asymptotic port-based teleportation

Speaker: Christian Majenz from CWI

Title: Asymptotic port-based teleportation

Port-based teleportation is a variant of the ubiquitous quantum teleportation protocol by Bennett et al., where the receiver has to merely pick up the right quantum system, called “port”, instead of having to apply a unitary correction. While much less efficient and fundamentally imperfect, it enables applications such as instantaneous non-local computation due to a “simultaneous unitary covariance” property. In this talk, I will show how the leading order asymptotics for large number of ports of the optimal error is related to the principal eigenvalue of the Dirichlet Laplacian on the simplex of ordered probability distributions.