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Observation of chiral zero mode in inhomogeneous three-dimensional Weyl metamaterials

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Science  11 Jan 2019:
Vol. 363, Issue 6423, pp. 148-151
DOI: 10.1126/science.aau7707

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A photonic Weyl system by design

Theoretically proposed exotic physics is now being explored and realized in condensed matter and photonic systems. Weyl physics arises when the valence band and conduction bands meet at discrete points in the band structure. Jia et al. designed and fabricated a photonic metamaterial in which the position of the Weyl points in momentum space could be tuned using a huge artificial magnetic field. Because these points are stable, the ability to design and control such a Weyl system with a robust chiral optical mode could be exploited in future optical information processing applications.

Science, this issue p. 148