Scalable repeater architectures for multi-party states
Abstract
The vision to develop quantum networks entails multi-user applications, which require the generation of long-distance multi-party entangled states. The current rapid experimental progress in building prototype-networks calls for new design concepts to guide future developments. Here we describe an experimentally feasible scheme implementing a two-dimensional repeater network for robust distribution of three-party entangled states of GHZ type in the presence of excitation losses and detector dark counts --- the main sources of errors in real-world hardware. Our approach is based on atomic or solid state ensembles and employs built-in error filtering mechanisms peculiar to intrinsically two-dimensional networks. This allows us to overcome the performance limitation of conventional one-dimensional ensemble-based networks distributing multi-party entangled states and provides an efficient design for future experiments with a clear perspective in terms of scalability.
Cite
@article{arxiv.1905.00335,
title = {Scalable repeater architectures for multi-party states},
author = {V. V. Kuzmin and D. V. Vasilyev and N. Sangouard and W. Dür and C. A. Muschik},
journal= {arXiv preprint arXiv:1905.00335},
year = {2019}
}