Demon-like Algorithmic Quantum Cooling and its Realization with Quantum Optics
Abstract
The simulation of low-temperature properties of many-body systems remains one of the major challenges in theoretical and experimental quantum information science. We present, and demonstrate experimentally, a universal cooling method which is applicable to any physical system that can be simulated by a quantum computer. This method allows us to distill and eliminate hot components of quantum states, i.e., a quantum Maxwell's demon. The experimental implementation is realized with a quantum-optical network, and the results are in full agreement with theoretical predictions (with fidelity higher than 0.978). These results open a new path for simulating low-temperature properties of physical and chemical systems that are intractable with classical methods.
Cite
@article{arxiv.1208.2256,
title = {Demon-like Algorithmic Quantum Cooling and its Realization with Quantum Optics},
author = {Jin-Shi Xu and Man-Hong Yung and Xiao-Ye Xu and Sergio Boixo and Zheng-Wei Zhou and Chuan-Feng Li and Alán Aspuru-Guzik and Guang-Can Guo},
journal= {arXiv preprint arXiv:1208.2256},
year = {2014}
}
Comments
7 pages, 5 figures, plus supplementarity materials