arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.02060quant-phphysics.optics
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彩色强度干涉测量法提高空间分辨率

Improved Spatial Resolution Achieved by Chromatic Intensity Interferometry

Lu-Chuan Liu, Luo-Yuan Qu, Cheng Wu, Jordan Cotler, Fei Ma, Ming-Yang Zheng, Xiu-Ping Xie, Yu-Ao Chen, Qiang Zhang, Frank Wilczek, Jian-Wei Pan

摘要:

干涉仪广泛用于成像技术中以实现增强的空间分辨率,但要求入射光子不可区分。在以前的工作中,我们建立和分析的颜色擦除检测器,扩大强度干涉测量的范围,以适应不同颜色的来源。在这里,我们通过实验演示了颜色擦除检测器如何在成像任务中实现更高的空间分辨率,远远超出衍射极限。利用两台10.9 mm口径望远镜和0.8 m基线,我们测量了1063.6 nm光源和1064.4 nm光源之间的距离,相距4.2 mm,距离为1.43 km,这超过了单个望远镜的衍射极限约40倍。此外,彩色强度干涉测量允许我们恢复成像对象的傅里叶变换的相位-在适度噪声的存在下,传统强度干涉测量无法获得的量。

英文摘要:

Interferometers are widely used in imaging technologies to achieve enhanced spatial resolution, but require that the incoming photons be indistinguishable. In previous work, we built and analyzed color erasure detectors which expand the scope of intensity interferometry to accommodate sources of different colors. Here we experimentally demonstrate how color erasure detectors can achieve improved spatial resolution in an imaging task, well beyond the diffraction limit. Utilizing two 10.9 mm-aperture telescopes and a 0.8 m baseline, we measure the distance between a 1063.6 nm source and a 1064.4 nm source separated by 4.2 mm at a distance of 1.43 km, which surpasses the diffraction limit of a single telescope by about 40 times. Moreover, chromatic intensity interferometry allows us to recover the phase of the Fourier transform of the imaged objects - a quantity that is, in the presence of modest noise, inaccessible to conventional intensity interferometry.

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