Related Experiment Video
Updated: Apr 8, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Photon Devil's staircase: photon long-range repulsive interaction in lattices of coupled resonators with Rydberg
Yuanwei Zhang1, Jingtao Fan2, J-Q Liang3
11] State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser spectroscopy, Shanxi University, Taiyuan 030006, P. R. China [2] Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, P. R. China.
Abstract:
The realization of strong coherent interactions between individual photons is a long-standing goal in science and engineering. In this report, based on recent experimental setups, we derive a strong photon long-range repulsive interaction, by controlling the van der Waals repulsive force between Cesium Rydberg atoms located inside different cavities in extended Jaynes-Cummings-Hubbard lattices. We also find novel quantum phases induced by this photon long-range repulsive interaction. For example, without photon hopping, a photon Devil's staircase, induced by the breaking of long-range translation symmetry, can emerge. If photon hopping occurs, we predict a photon-floating solid phase, due to the motion of particle- and hole-like defects. More importantly, for a large chemical potential in the resonant case, the photon hopping can be frozen even if the hopping term exists. We call this new phase the photon-frozen solid phase. In experiments, these predicted phases could be detected by measuring the number of polaritons via resonance fluorescence.
Related Concept Videos
The de Broglie Wavelength
The Bohr Model
Deactivation Processes: Jablonski Diagram
The Quantum-Mechanical Model of an Atom
¹H NMR: Long-Range Coupling
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...

