Universität zu Köln

Wille, C., Egger, R., Eisert, J. and Altland, A. (2019). Simulating topological tensor networks with Majorana qubits. Phys. Rev. B, 99 (11). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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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 doublesemion 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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wille, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Egger, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eisert, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Altland, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-153788
DOI:	10.1103/PhysRevB.99.115117
Journal or Publication Title:	Phys. Rev. B
Volume:	99
Number:	11
Date:	2019
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language QUANTUM ERROR-CORRECTION; ENTANGLED PAIR STATES; MATRIX PRODUCT STATES; ANYONS; FERMIONS Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15378