物理
干涉测量
光子
动量(技术分析)
职位(财务)
光学
量子
弹道
量子力学
双缝实验
经典力学
财务
经济
作者
Sacha Kocsis,Boris Braverman,Sylvain Ravets,Martin J. Stevens,Richard P. Mirin,Lynden K. Shalm,Aephraim M. Steinberg
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2011-06-03
卷期号:332 (6034): 1170-1173
被引量:559
标识
DOI:10.1126/science.1202218
摘要
A consequence of the quantum mechanical uncertainty principle is that one may not discuss the path or "trajectory" that a quantum particle takes, because any measurement of position irrevocably disturbs the momentum, and vice versa. Using weak measurements, however, it is possible to operationally define a set of trajectories for an ensemble of quantum particles. We sent single photons emitted by a quantum dot through a double-slit interferometer and reconstructed these trajectories by performing a weak measurement of the photon momentum, postselected according to the result of a strong measurement of photon position in a series of planes. The results provide an observationally grounded description of the propagation of subensembles of quantum particles in a two-slit interferometer.
科研通智能强力驱动
Strongly Powered by AbleSci AI