Teleportation of Quantum States

TL;DR

This paper discusses quantum teleportation, showing how Bennett et al.'s method can be understood through nonlocal measurements and extends the concept to continuous variable systems.

Contribution

It demonstrates the connection between quantum teleportation and nonlocal measurements, and generalizes the protocol to continuous variable quantum states.

Findings

Quantum teleportation can be framed using nonlocal measurements.

The teleportation protocol is extended to continuous variable systems.

Provides a unified framework for discrete and continuous quantum state transfer.

Abstract

Bennett et al. (PRL 70, 1859 (1993)) have shown how to transfer ("teleport") an unknown spin quantum state by using prearranged correlated quantum systems and transmission of classical information. I will show how their results can be obtained in the framework of nonlocal measurements proposed by Aharonov and Albert I will generalize the latter to the teleportation of a quantum state of a system with continuous variables.