Power-Law-Exponential Interaction Induced Quantum Spiral Phases

TL;DR

This paper introduces a novel power-law-exponential interaction in 1D waveguide QED systems, revealing unique spiral phases due to frustration, with implications for quantum simulation of correlated matter.

Contribution

It predicts a new type of long-range interaction and demonstrates its ability to induce unique spiral phases not seen with other interactions.

Findings

Discovery of power-law-exponential interaction in 1D systems

Induction of ordered and critical spiral phases by PLE interaction

Potential applications in quantum simulation of strongly correlated systems

Abstract

We theoretically predict a kind of power-law-exponential (PLE) dipole-dipole interaction between quantum emitters in a 1D waveguide QED system. This unconventional long-range interaction is the combination of power-law growth and exponential decay couplings. Applying PLE interaction to a spin model, we uncover the rich many-body phases. Most remarkably, we find that PLE interaction can induce the ordered and critical spiral phases. These spiral phases emerge from the strong frustration generated by the power-law factor of PLE interaction, hence they are absent for other types of long-range interaction, e.g., pure exponential and power-law decay interactions. Our work is also applicable for the higher dimensional systems. It fundamentally broadens the realm of many-body physics and has the significant applications in quantum simulation of strong correlated matters.