Controlling chaos in the quantum regime using adaptive measurements
Abstract
The continuous monitoring of a quantum system strongly influences the emergence of chaotic dynamics near the transition from the quantum regime to the classical regime. Here we present a feedback control scheme that uses adaptive measurement techniques to control the degree of chaos in the driven-damped quantum Duffing oscillator. This control relies purely on the measurement backaction on the system, making it a uniquely quantum control, and is only possible due to the sensitivity of chaos to measurement. We quantify the effectiveness of our control by numerically computing the quantum Lyapunov exponent over a wide range of parameters. We demonstrate that adaptive measurement techniques can control the onset of chaos in the system, pushing the quantum-classical boundary further into the quantum regime.
Cite
@article{arxiv.1808.09257,
title = {Controlling chaos in the quantum regime using adaptive measurements},
author = {Jessica K. Eastman and Stuart S. Szigeti and Joseph J. Hope and André R. R. Carvalho},
journal= {arXiv preprint arXiv:1808.09257},
year = {2019}
}