Related Experiment Video
Updated: Mar 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Photonic gauge potential in a system with a synthetic frequency dimension
Abstract:
We generalize the concept of photonic gauge potential in real space by introducing an additional "synthetic" frequency dimension in addition to the real space dimensions. As an illustration, we consider a one-dimensional array of ring resonators, each supporting a set of resonant modes having a frequency comb with spacing Ω, and undergoing a refractive index modulation at the modulation frequency equal to Ω. We show that the modulation phase provides a gauge potential in the synthetic two-dimensional space with the dimensions being the frequency and the spatial axes. Such a gauge potential can create a topologically protected one-way edge state in the synthetic space that is useful for high-efficiency generation of higher-order side bands.
Related Concept Videos
Gauss's Law
Dual Nature of Electromagnetic (EM) Radiation
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...
Sound as Pressure Waves
The pressure fluctuation depends on the difference in displacements between the successive points in the...
Force and Potential Energy in One Dimension
Debye–Huckel–Onsager Conductance Equation
Thermodynamic Potentials

