Continuous variable port-based teleportation

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.

arXiv comment27 pages, 6 figures. Similar to published version. Supplemental material available in the source folder

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Cited by in corpus (3)

• Continuous-variable quantum communication
• Asymptotic teleportation schemes bridging between standard and port-based teleportation
• A resource theory of asynchronous quantum information processing