Matter wave correlated image generation method and device thereof

Abstract

The invention relates to a matter wave correlated image generation method and a device thereof. The method comprises the steps of generating a partially coherent matter wave, projecting the partially coherent matter wave onto an atomic grating and forming matter wave density images of cycle distribution on detection surfaces with integer multiples of Taber distances, selecting a signal matter wave which projects an object to be measured and a reference matter wave in the density images, projecting an object by using the signal matter wave, and carrying out barrel measurement on the signal matter wave which projects the object and carrying out space association with the reference matter wave to obtain the image of the object. According to the method and the device, a cold atomic matter wave instead of a light wave is employed as a wave source of the correlated imaging, the wavelength is shorted, and the imaging resolution is higher. According to the method and the device, the signal matter wave and the reference matter wave are generated through the atomic grating, the destroy of matter wave quantum correlation by a matter wave beam splitter and an asymmetric transmission process are avoided, the device is simple, the imaging speed is fast, and the number of imaging is large.

Description

technical field [0001] The invention relates to a material wave correlation imaging method and a device thereof. technical background [0002] Correlative imaging (ghost imaging) is a novel imaging mechanism. It utilizes the partial coherence or quantum entanglement characteristics of the light source to realize the acquisition of the diffraction image of the object with nanometer resolution in the optical path without the object. The principle is as follows: figure 1 shown. A continuous partially coherent light beam generated by the pseudothermal light source 11 is split into signal light and reference light by a beam splitter 12 . The signal light illuminates a preselected hollow object 14 . The barrel detector 15 is arranged behind the hollow object 14, and the barrel detector 15 is composed of an avalanche photodiode and is arranged at a fixed position. The reference light is captured by the area detector 13 . The measurement results of the barrel detector 15 and th...

AI Technical Summary

Problems solved by technology

This method has considerable advantages, but it still cannot be used as a matter-wave correlation imaging solution. The main reason is that this method is designed for pseudothermal light sources. Matter waves of will produce additional phases

This additional phase will affect the accuracy of imaging results, thus limiting the application and promotion of this method in the field of matter waves

Images