Featured
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News & Views |
A metallic road to localization
Whether Anderson localization of light is possible in three dimensions has long been an open question. Numerical calculations have now shown that it can be done with a disordered arrangement of metal particles.
- Diederik S. Wiersma
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Article |
Non-Abelian Thouless pumping in photonic waveguides
Non-Abelian Thouless pumping, whose outcome depends on the order of pumping operations, has been observed in photonic waveguides with degenerate flat bands.
- Yi-Ke Sun
- , Xu-Lin Zhang
- & Hong-Bo Sun
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News & Views |
Quantum echoes
Quantum waves can have stronger correlations than classical ones because of their particle nature. This effect has now been observed using quantum sound waves travelling in an acoustic waveguide.
- H. Yamaguchi
- & D. Hatanaka
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Article |
Non-classical mechanical states guided in a phononic waveguide
Non-classical vibrations are generated and transmitted along a mechanical waveguide, providing a platform for distributing quantum information and realizing hybrid quantum devices using phonons in a solid-state system.
- Amirparsa Zivari
- , Robert Stockill
- & Simon Gröblacher
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Letter |
Superlight inverse Doppler effect
The authors theoretically investigate a novel form of a Doppler effect in homogeneous systems with positive refractive index that occurs under certain conditions. It is suggested that this Doppler effect can be experimentally separated from other Doppler effects by using polaritons such as those found in graphene.
- Xihang Shi
- , Xiao Lin
- & Baile Zhang
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Article |
Controlling Cherenkov angles with resonance transition radiation
The angle of Cherenkov radiation in one-dimensional photonic crystals can be controlled by making use of constructive interference. This feature allows new design of particle detectors with improved performance.
- Xiao Lin
- , Sajan Easo
- & Ido Kaminer
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Letter |
Experimental discovery of nodal chains
Nodal chains are observed for the first time in a photonic crystal with accompanying drumhead surface states. This will stimulate further study of topological nodal lines with non-trivial connectivity.
- Qinghui Yan
- , Rongjuan Liu
- & Ling Lu
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Letter |
Topologically protected refraction of robust kink states in valley photonic crystals
A photonic crystal can realize an analogue of a valley Hall insulator, promising more flexibility than in condensed-matter systems to explore these exotic topological states.
- Fei Gao
- , Haoran Xue
- & Baile Zhang
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News & Views |
Come to light
Topological concepts have been demonstrated in microwave photonic systems but laser-written waveguides show the way to topological physics for light at optical frequencies.
- Alexander B. Khanikaev
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Article |
Experimental observation of optical Weyl points and Fermi arc-like surface states
Three-dimensional laser-written waveguide arrays are used to demonstrate type-II Weyl points, along with Fermi arc-like surface states, for light at optical wavelengths.
- Jiho Noh
- , Sheng Huang
- & Mikael C. Rechtsman
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Letter |
Intrinsic photonic wave localization in a three-dimensional icosahedral quasicrystal
Unlike the usual picture of Anderson localization, in three-dimensional quasicrystals light waves can localize without disorder, thanks to their short mean free path.
- Seung-Yeol Jeon
- , Hyungho Kwon
- & Kahyun Hur
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Letter |
Symmetry-protected topological photonic crystal in three dimensions
Crystal symmetries may protect single Dirac cones on the surface of a photonic crystal, creating a photonic analogue of a three-dimensional solid-state topological insulator.
- Ling Lu
- , Chen Fang
- & Marin Soljačić
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News & Views |
Disorder sets light straight
Photonic crystals can control the flow of light but they are extremely sensitive to structural disorder. Although this often degrades performance, disorder can actually be used to enhance light collimation.
- Jorge Bravo-Abad
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Non-Hermitian topological phase transitions controlled by nonlinearity
One mode to lase in all
Photonic crystal maze
Wings of a butterfly