72 citations · 171 across the 11 of their papers we have counts for
3 papers · 1 filter
On-chip optical non-reciprocity through a synthetic Hall effect for photons
Soonwook Kim, Donggyu B. Sohn, Christopher W. Peterson +1
We demonstrate a synthetic Hall effect for light, using an acousto-optically modulated nanophotonic resonator chain. To produce this effect, we simultaneously generate the required…
Observation of trapped fractional charge and topological states at disclination defects in higher-order topological insulators
Christopher W. Peterson, Tianhe Li, Wentao Jiang +2
Topological crystalline insulators (TCIs) can exhibit unique, quantized electric phenomena such as fractional electric polarization and boundary-localized fractional charge. This q…
A fractional corner anomaly reveals higher-order topology
Christopher W. Peterson, Tianhe Li, Wladimir A. Benalcazar +2
Spectral measurements of boundary localized in-gap modes are commonly used to identify topological insulators via the bulk-boundary correspondence. This can be extended to high-ord…