Abstract
In the emerging quantum internet, complex network topology could lead to efficient quantum communication and robustness against failures. However, there are concerns about complexity in quantum communication networks, such as potentially limited end-to-end transmission capacity. These challenges call for model systems in which the impact of complex topology on quantum communication protocols can be explored. Here, we present a theoretical model for complex quantum communication networks on a lattice of spins, wherein entangled spin clusters in interacting quantum spin systems serve as communication links between appropriately selected regions of spins. Specifically, we show that ground state Greenberger-Horne-Zeilinger clusters of the two-dimensional random transverse-field Ising model can be used as communication links between regions of spins. Further, the resulting quantum networks can have complexity comparable to that of the classical internet. Our work provides a generative model for further studies towards determining the network characteristics of the emerging quantum internet.
| Original language | English (US) |
|---|---|
| Article number | 271 |
| Journal | Communications Physics |
| Volume | 6 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 2023 |
Funding
This work was supported by the National Science Foundation under Grant No. PHY-2310706 of the QIS program in the Division of Physics, the JTF project The Nature of Quantum Networks (ID 60478), and the Baker Faculty Grant of the Weinberg College of Arts and Sciences, Northwestern University, 2020. R.T.C. Chepuri was supported by the Northwestern University SURG-Advanced in 2021. We are thankful for Ginestra Bianconi for useful discussions. We also thank Bingjie Hao, Anastasiya Salova, and Helen S. Ansell for insightful feedback on the manuscript.
ASJC Scopus subject areas
- General Physics and Astronomy