Isolated Photonic Flatband with the Effective Magnetic Flux in A Synthetic Space including the Frequency Dimension
arXiv:2004.12542 · doi:10.1002/lpor.202000041
Abstract
The exploration of flatband in photonics is fundamentally important, aiming to control the localization of light for potential applications in optical communications. We study the flatband physics in a synthetic space including the frequency axis of light. A ring-resonator array is used to construct a synthetic Lieb-type lattice, where the modulation phase distribution supports a locally non-zero effective magnetic flux pointing into the synthetic space. We find that the flatband is isolated from other dispersive bands and the light can still be localized even with the perturbation from the group velocity dispersion of the waveguide. Our work points out a route towards manipulating the localization performance of a wavepacket of light along both the spatial dimension and the frequency dimension, which holds the potential implication for controlling the storage of optical information in dispersive materials.
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Cited by in corpus (10)
- Tutorial: synthetic frequency dimensions in dynamically modulated ring resonators
- Flat-band localization in Creutz superradiance lattices
- A comprehensive review on developments of synthetic dimensions
- Realization of all-band-flat photonic lattices
- Topological holographic quench dynamics in a synthetic dimension
- Observation of flat-band and band transition in the synthetic space
- Anti- flatbands
- Multiple flat bands and localized states in photonic super-Kagome lattices
- Simulating graphene dynamics in one-dimensional modulated ring array with synthetic dimension
- Tunable Aharonov-Bohm cages through anti--symmetric imaginary couplings