Simulating topological tensor networks with Majorana qubits

Wille C, Egger R, Eisert J, Altland A (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Physical Review B American Physical Society

Book Volume: 99

Article Number: 115117

Journal Issue: 11

DOI: 10.1103/PhysRevB.99.115117

Abstract

The realization of topological quantum phases of matter remains a key challenge to condensed matter physics and quantum information science. In this work, we demonstrate that progress in this direction can be made by combining concepts of tensor network theory with Majorana device technology. Considering the topological double-semion string-net phase as an example, we exploit the fact that the representation of topological phases by tensor networks can be significantly simpler than their description by lattice Hamiltonians. The building blocks defining the tensor network are tailored to realization via simple units of capacitively coupled Majorana bound states. In the case under consideration, this yields a remarkably simple blueprint of a synthetic double-semion string net, and one may be optimistic that the required device technology will be available soon. Our results indicate that the implementation of tensor network structures via mesoscopic quantum devices opens up a powerful avenue toward the realization and quantum simulation of synthetic topological quantum matter.

Involved external institutions

Freie Universität Berlin DE Germany (DE) Heinrich-Heine-Universität Düsseldorf DE Germany (DE) Universität zu Köln DE Germany (DE)

How to cite

APA:

Wille, C., Egger, R., Eisert, J., & Altland, A. (2019). Simulating topological tensor networks with Majorana qubits. Physical Review B, 99(11). https://doi.org/10.1103/PhysRevB.99.115117

MLA:

Wille, C., et al. "Simulating topological tensor networks with Majorana qubits." Physical Review B 99.11 (2019).

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