Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Topologically protecting quantum resources with sawtooth lattices

Not Accessible

Your library or personal account may give you access

Abstract

The inevitable noise and decoherence in the quantum circuit hinder its scalable development, so quantum error correction and quantumness protection for multiple controllable qubits system are necessary. The flatband in the dispersion relation, based on its inherent locality and high degenerate energy band structure, shows non-diffractive transport properties in the line spectrum and has the potential possibility to protect quantum resources in special lattices. The pioneer work has proved that the topologically boundary state is robust to protect the quantumness from disorder and perturbation, which inspires that quantumness can be protected anywhere in a periodic structure, including the boundary state and bulk state. Here, we show the topological protection of quantum resources with different state combinations in a sawtooth lattice. Photons can be localized at any degenerate eigenmode, and the localized effect is determined by only one parameter, without additional modulations. We show a high violation of Cauchy–Schwarz inequality up to 35 standard deviations by measuring cross correlation and auto-correlation of correlated photons. We verify that the topological protection is robust to different wavelengths of correlated photons. Our results suggest an alternative way of exploring topological protection in flatband and bulk state, demonstrating the powerful ability of topological photonics to protect quantum resources.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Topological protection of two-photon quantum correlation on a photonic chip

Yao Wang, Xiao-Ling Pang, Yong-Heng Lu, Jun Gao, Yi-Jun Chang, Lu-Feng Qiao, Zhi-Qiang Jiao, Hao Tang, and Xian-Min Jin
Optica 6(8) 955-960 (2019)

Transport in Sawtooth photonic lattices

Steffen Weimann, Luis Morales-Inostroza, Bastián Real, Camilo Cantillano, Alexander Szameit, and Rodrigo A. Vicencio
Opt. Lett. 41(11) 2414-2417 (2016)

Probing the topology of the two-photon bands via time-dependent quantum walks

Andrei A. Stepanenko and Maxim A. Gorlach
Opt. Lett. 46(11) 2726-2729 (2021)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved