Quantum Imaging by Coherent Enhancement

被引:18
|
作者
Low, Guang Hao [1 ]
Yoder, Theodore J.
Chuang, Isaac L.
机构
[1] MIT, Ctr Ultracold Atoms, Elect Res Lab, Cambridge, MA 02139 USA
基金
美国国家科学基金会;
关键词
MICROSCOPY; NOISE;
D O I
10.1103/PhysRevLett.114.100801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Conventional wisdom dictates that to image the position of fluorescent atoms or molecules, one should stimulate as much emission and collect as many photons as possible. That is, in this classical case, it has always been assumed that the coherence time of the system should be made short, and that the statistical scaling similar to 1/root t defines the resolution limit for imaging time t. However, here we show in contrast that given the same resources, a long coherence time permits a higher resolution image. In this quantum regime, we give a procedure for determining the position of a single two-level system and demonstrate that the standard errors of our position estimates scale at the Heisenberg limit as similar to 1/t, a quadratic, and notably optimal, improvement over the classical case.
引用
收藏
页数:5
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