832 citations · 1.2k across the 7 of their papers we have counts for
8 papers
Bound states at partial dislocation defects in multipole higher-order topological insulators
Sasha S. Yamada, Tianhe Li, Mao Lin +3
The bulk-boundary correspondence, which links a bulk topological property of a material to the existence of robust boundary states, is a hallmark of topological insulators. However…
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…
Robust temporal pumping in a magneto-mechanical topological insulator
Inbar Hotzen Grinberg, Mao Lin, Cameron Harris +4
The transport of energy through 1-dimensional (1D) waveguiding channels can be affected by sub-wavelength disorder, resulting in undesirable localization and backscattering phenome…
Strong nonreciprocity in modulated resonator chains through synthetic electric and magnetic fields
Christopher W. Peterson, Wladimir A. Benalcazar, Mao Lin +2
We study nonreciprocity in spatiotemporally modulated 1D resonator chains from the perspective of equivalent 2D resonator arrays with a synthetic dimension and transverse synthetic…
Demonstration of a quantized microwave quadrupole insulator with topologically protected corner states
Christopher W. Peterson, Wladimir A. Benalcazar, Taylor L. Hughes +1
The modern theory of electric polarization in crystals associates the dipole moment of an insulator with a Berry phase of its electronic ground state [1, 2]. This concept constitut…
Synthetic phonons enable nonreciprocal coupling to arbitrary resonator networks
Christopher W Peterson, Seunghwi Kim, Jennifer T Bernhard +1
Inducing nonreciprocal wave propagation is a fundamental challenge across a wide range of physical systems in electromagnetics, optics, and acoustics. Recent efforts to create nonr…