Synchronization of Interacting Quantum Dipoles
Abstract
Macroscopic ensembles of radiating dipoles are ubiquitous in the physical and natural sciences. In the classical limit the dipoles can be described as damped-driven oscillators, which are able to spontaneously synchronize and collectively lock their phases. Here we investigate the correspond- ing phenomenon in the quantum regime with arrays of quantized two-level systems coupled via long-range and anisotropic dipolar interactions. Our calculations demonstrate that the dipoles may overcome the decoherence induced by quantum fluctuations and inhomogeneous couplings and evolve to a synchronized steady-state. This steady-state bears much similarity to that observed in classical systems, and yet also exhibits genuine quantum properties such as quantum correlations and quan- tum phase diffusion (reminiscent of lasing). Our predictions could be relevant for the development of better atomic clocks and a variety of noise tolerant quantum devices.
Cite
@article{arxiv.1502.06055,
title = {Synchronization of Interacting Quantum Dipoles},
author = {Bihui Zhu and Johannes Schachenmayer and Minghui Xu and F. Herrera and Juan G. Restrepo and Murray J. Holland and Ana Maria Rey},
journal= {arXiv preprint arXiv:1502.06055},
year = {2015}
}