# Distributing entanglement in first generation discrete and continuous   variable quantum repeaters

**Authors:** Josephine Dias, Matthew S. Winnel, William J. Munro, Timothy C. Ralph,, Kae Nemoto

arXiv: 1906.06019 · 2022-08-08

## TL;DR

This paper compares the performance of first-generation discrete and continuous variable quantum repeaters in distributing entanglement, using a novel method that applies discrete variable protocols to continuous variable states.

## Contribution

It introduces a method to use discrete variable repeater protocols for continuous variable states and benchmarks their entanglement distribution rates.

## Key findings

- Discrete variable repeaters can be adapted for continuous variable states.
- Comparison of entanglement distribution rates between the two approaches.
- Benchmarking of discrete and continuous variable quantum repeaters.

## Abstract

Quantum repeaters are used to overcome the exponential photon loss scaling that quantum states acquire as they are transmitted over long distances. While repeaters for discrete variable encodings of quantum information have existed for some time, novel approaches for continuous variable encoding quantum repeaters have only recently been proposed. In this work, we present a method of using a discrete variable repeater protocol to distribute continuous variable states and utilize it to compare the rates of continuous variable entanglement distribution between first generation continuous and discrete variable quantum repeaters. Such a comparison allows us to begin to benchmark the two quite different approaches.

## Full text

_Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/1906.06019/full.md

## Figures

15 figures with captions in the complete paper: https://tomesphere.com/paper/1906.06019/full.md

## References

53 references — full list in the complete paper: https://tomesphere.com/paper/1906.06019/full.md

---
Source: https://tomesphere.com/paper/1906.06019