非随机相移的亚海森堡估计
量子物理
2012-09-28 v3
摘要
我们提供证据表明,在固定有限平均光子数下,对工作点处微小且确定性的相移偏差的探测不确定度可以低于海森堡界限。我们通过利用估计量的非线性和与真空的相干性来实现这一点。
引用
@article{arxiv.1105.6310,
title = {Sub-Heisenberg estimation of non-random phase-shifts},
author = {Ángel Rivas and Alfredo Luis},
journal= {arXiv preprint arXiv:1105.6310},
year = {2012}
}
备注
Published version. Partially rewritten including further explanations and more numerical simulations. Updated references