# All-quantum teleportation

## TL;DR

This paper introduces an all-quantum teleportation protocol that replaces classical channels with quantum channels, reducing resource consumption and increasing efficiency compared to the original protocol.

## Contribution

It proposes novel all-quantum teleportation schemes using either a single quantum channel or two nonlocal channels, improving resource efficiency over the original protocol.

## Key findings

- Single-channel AQT uses one EPR pair for multiple runs.
- Two nonlocal channels with superdense coding are more economical.
- AQT reduces resource consumption compared to OP.

## Abstract

I propose to replace the dual classical and nonlocal channels used for teleporting unknown quantum states in the original protocol (OP) [Bennett, C. H., et al. Phys. Rev. Lett. 70 1895 (1993)] by either (i) one single quantum channel or (ii) two nonlocal channels in order to turn the OP into an all-quantum teleportation (AQT) protocol. Ideally, N runs of single channel AQT can be achieved with a single Einstein-Podolsky-Rosen (EPR) pair, in contrast with the OP, which consumes N EPR pairs. In the two nonlocal channels proposal, Alice uses the superdense coding technique to send Bob her result, which makes AQT more economical than OP.