Compact localized boundary states in a quasi-1D electronic diamond-necklace chain

Zero-energy modes localized at the ends of one-dimensional (1D) wires hold great potential as qubits for fault-tolerant quantum computing. However, all the candidates known to date exhibit a wave function that decays exponentially into the bulk and hybridizes with other nearby zero-modes, thus hampe...

Full description

Saved in:
Bibliographic Details
Published in:Quantum frontiers 2023-01, Vol.2 (1), p.1-1, Article 1
Main Authors: Kempkes, S. N., Capiod, P., Ismaili, S., Mulkens, J., Eek, L., Swart, I., Morais Smith, C.
Format: Article
Language:English
Subjects:
Condensed Matter Physics
Original
Original Article
Physics
Physics and Astronomy
Quantum Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Zero-energy modes localized at the ends of one-dimensional (1D) wires hold great potential as qubits for fault-tolerant quantum computing. However, all the candidates known to date exhibit a wave function that decays exponentially into the bulk and hybridizes with other nearby zero-modes, thus hampering their use for braiding operations. Here, we show that a quasi-1D diamond-necklace chain exhibits an unforeseen type of robust boundary state, namely compact localized zero-energy modes that do not decay into the bulk. We find that this state emerges due to the presence of a latent symmetry in the system. We experimentally realize the diamond-necklace chain in an electronic quantum simulator setup.
ISSN:2731-6106
2731-6106
DOI:10.1007/s44214-023-00026-0