Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths

Sonakshi Arora; Thomas Bauer; René Barczyk; Ewold Verhagen; L. Kuipers

doi:10.1038/s41377-020-00458-6

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Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths

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- Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths
- Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths
- LSA 2021年10卷第1期页码：5-11
- Affiliations：
  
  1.Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands
  2.Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
- Author bio：
  
  L. Kuipers (l.kuipers@tudelft.nl)
- Funds：
- DOI：10.1038/s41377-020-00458-6
  中图分类号：
- 纸质出版日期：2021，
  
  网络出版日期：2021-01-06，
  
  收稿日期：2020-08-20，
  
  修回日期：2020-11-23，
  
  录用日期：2020-12-16
- Accepted：
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Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths[J]. LSA, 2021,10(1):5-11.

Arora, S. et al. Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths. Light: Science & Applications, 10, 5-11 (2021).
Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths[J]. LSA, 2021,10(1):5-11. DOI： 10.1038/s41377-020-00458-6.

Arora, S. et al. Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths. Light: Science & Applications, 10, 5-11 (2021). DOI： 10.1038/s41377-020-00458-6.

摘要

Abstract

Topological on-chip photonics based on tailored photonic crystals (PhCs) that emulate quantum valley-Hall effects has recently gained widespread interest owing to its promise of robust unidirectional transport of classical and quantum information. We present a direct quantitative evaluation of topological photonic edge eigenstates and their transport properties in the telecom wavelength range using phase-resolved near-field optical microscopy. Experimentally visualizing the detailed sub-wavelength structure of these modes propagating along the interface between two topologically non-trivial mirror-symmetric lattices allows us to map their dispersion relation and differentiate between the contributions of several higher-order Bloch harmonics. Selective probing of forward- and backward-propagating modes as defined by their phase velocities enables direct quantification of topological robustness. Studying near-field propagation in controlled defects allows us to extract upper limits of topological protection in on-chip photonic systems in comparison with conventional PhC waveguides. We find that protected edge states are two orders of magnitude more robust than modes of conventional PhC waveguides. This direct experimental quantification of topological robustness comprises a crucial step toward the application of topologically protected guiding in integrated photonics

allowing for unprecedented error-free photonic quantum networks.

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references

Klembt, S. et al. Exciton-polariton topological insulator.Nature562, 552–556 (2018)..

Carusotto, I.&Ciuti, C. Quantum fluids of light.Rev. Mod. Phys.85, 299–366 (2013)..

Zheng, W. et al. Reflection-free one-way edge modes in a gyromagnetic photonic crystal.Phys. Rev. Lett.100, 013905 (2008)..

Haldane, F. D. M.&Raghu, S. Possible realization of directional optical waveguides in photonic crystals with broken time-reversal symmetry.Phys. Rev. Lett.100, 013904 (2008)..

Raghu, S.&Haldane, F. D. M. Analogs of quantum-Hall-effect edge states in photonic crystals.Phys. Rev. A78, 033834 (2008)..

Plotnik, Y. et al. Observation of unconventional edge states in 'photonic graphene'.Nat. Mater.13, 57–62 (2014)..

Wu, L. H.&Hu, X. Scheme for achieving a topological photonic crystal by using dielectric material.Phys. Rev. Lett.114, 223901 (2015)..

Khanikaev, A. B. et al. Photonic topological insulators.Nat. Mater.12, 233–239 (2013)..

Barik, S. et al. A topological quantum optics interface.Science359, 666–668 (2018)..

Parappurath, N. et al. Direct observation of topological edge states in silicon photonic crystals: spin, dispersion, and chiral routing.Sci. Adv.6, eaaw4137 (2020)..

Smirnova, D. et al. Third-harmonic generation in photonic topological metasurfaces.Phys. Rev. Lett.123, 103901 (2019)..

Shalaev, M. I. et al. Robust topologically protected transport in photonic crystals at telecommunication wavelengths.Nat. Nanotechnol.14, 31–34 (2019)..

He, X. T. et al. A silicon-on-insulator slab for topological valley transport.Nat. Commun.10, 872 (2019)..

Lu, L. , Joannopoulos, J. D.&Soljačić, M. Topological photonics.Nat. Photonics8, 821–829 (2014)..

Xie, B. Y. et al. Photonics meets topology.Opt. Express26, 24531–24550 (2018)..

Dubrovkin, A. M. et al. Near-field mapping of the edge mode of a topological valley slab waveguide at λ = 1.55 μm.Appl. Phys. Lett.116, 191105 (2020)..

Schaibley, J. R. et al. Valleytronics in 2D materials.Nat. Rev. Mater.1, 16055 (2016)..

Ma, T.&Shvets, G. All-Si valley-Hall photonic topological insulator.N. J. Phys.18, 25012 (2016)..

Xiao, D. , Yao, W.&Niu, Q. Valley-contrasting physics in graphene: magnetic moment and topological transport.Phys. Rev. Lett.99, 236809 (2007)..

Zak, J. Berry's phase for energy bands in solids.Phys. Rev. Lett.62, 2747–2750 (1989)..

Cheng, X. J. et al. Robust reconfigurable electromagnetic pathways within a photonic topological insulator.Nat. Mater.15, 542–548 (2016)..

Gersen, H. et al. Direct observation of Bloch harmonics and negative phase velocity in photonic crystal waveguides.Phys. Rev. Lett.94, 123901 (2005)..

Rotenberg, N.&Kuipers, L. Mapping nanoscale light fields.Nat. Photon.8, 919–926 (2014)..

Balistreri, M. L. M. et al. Local observations of phase singularities in optical fields in waveguide structures.Phys. Rev. Lett.85, 294–297 (2000)..

Engelen, R. J. P. et al. Ultrafast evolution of photonic eigenstates in k-space.Nat. Phys.3, 401–405 (2007)..

Burresi, M. et al. Observation of polarization singularities at the nanoscale.Phys. Rev. Lett.102, 033902 (2009)..

Ma, T. et al. Guiding electromagnetic waves around sharp corners: topologically protected photonic transport in metawaveguides.Phys. Rev. Lett.114, 127401 (2015)..

Krauss, T. F. et al. Understanding the rich physics of light propagation in slow photonic crystal waveguides. Proceedings of SPIE 7612, Advances in Slow and Fast Light Ⅲ. (San Francisco: SPIE, 2010).

Kuang, W.&O'Brien, J. D. Strategy for reducing the out-of-plane radiation loss in photonic crystal waveguides on high-index substrates. Conference on Lasers and Electro-Optics 2004. (San Francisco: OSA, 2004).

Chow, E. et al. Quantitative analysis of bending efficiency in photonic-crystal waveguide bends at λ = 1.55 μm wavelengths.Opt. Lett.26, 286–288 (2001)..

Chutinan, A. , Okano, M.&Noda, S. Wider bandwidth with high transmission through waveguide bends in two-dimensional photonic crystal slabs.Appl. Phys. Lett.80, 1698–1700 (2002)..

Johnson, S.&Joannopoulos, J. Block-iterative frequency-domain methods for Maxwell's equations in a planewave basis.Opt. Express8, 173–190 (2001)..

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