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arXiv · 2302.08522

Continuous variable port-based teleportation

Jason L. Pereira·Leonardo Banchi·Stefano Pirandola
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Abstract

Port-based teleportation is generalization of the standard teleportation protocol which does not require unitary operations by the receiver. This comes at the price of requiring $N>1$ entangled pairs, while $N=1$ for the standard teleportation protocol. The lack of correction unitaries allows port-based teleportation to be used as a fundamental theoretical tool to simulate arbitrary channels with a general resource, with applications to study fundamental limits of quantum communication, cryptography and sensing, and to define general programmable quantum computers. Here we introduce a general formulation of port-based teleportation in continuous variable systems and study in detail the $N=2$ case. In particular, we interpret the resulting channel as an energy truncation and analyse the kinds of channels that can be naturally simulated after this restriction.

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Jason L. Pereira, Leonardo Banchi, Stefano Pirandola. 2023-02-16. Continuous variable port-based teleportation. https://doi.org/10.1088/1751-8121/ad0ce2

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