Year: 2020
Type: article
Abstract: Geometrical dimensionality plays a fundamentally important role in the topological effects arising in discrete lattices. Although direct experiments are limited by three spatial dimensions, the research topic of synthetic dimensions implemented by the frequency degree of freedom in photonics is rapidly advancing. The manipulation of light in these artificial lattices is typically realized through electro-optic modulation; yet, their operating bandwidth imposes practical constraints on the range of interactions between different frequency components. Here we propose and experimentally realize all-optical synthetic dimensions involving specially tailored simultaneous short- and long-range interactions between discrete spectral lines mediated by frequency conversion in a nonlinear waveguide. We realize triangular chiral-tube lattices in three-dimensional space and explore their four-dimensional generalization. We implement a synthetic gauge field with nonzero magnetic flux and observe the associated multidimensional dynamics of frequency combs, all within one physical spatial port. We anticipate that our method will provide a new means for the fundamental study of high-dimensional physics and act as an important step towards using topological effects in optical devices operating in the time and frequency domains.
Source: Light Science & Applications
Authors: Kai Wang, Bryn A. Bell, Alexander S. Solntsev, Dragomir N. Neshev, Benjamin J. Eggleton, Andrey A. Sukhorukov
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,975
Awards: G1190801978, G1993403866, G2865358874, Active photonic and plasmonic components based on parity-time symmetry, Nonlinear optical phononics: harnessing sound and light in nonlinear nanoscale circuits, G548922309, G5999098325, Synthetic multi-dimensional integrated photonics, G6819473628, G697918568
OpenAlex ID: W3007906857