Improved Spatial Resolution Achieved by Chromatic Intensity Interferometry
Name
PhysRevLett.127.103601.pdf
Description
Published version
Size
751.16 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Liu, Lu-Chuan
Qu, Luo-Yuan
Wu, Cheng
Cotler, Jordan
Ma, Fei
Zheng, Ming-Yang
Xie, Xiu-Ping
Chen, Yu-Ao
Zhang, Qiang
Wilczek, Frank
Date Issued
2021
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Liu, Lu-Chuan, Qu, Luo-Yuan, Wu, Cheng, Cotler, Jordan, Ma, Fei et al. 2021. "Improved Spatial Resolution Achieved by Chromatic Intensity Interferometry." Physical Review Letters, 127 (10).
Version
Final published version
Abstract
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 demonstrate experimentally 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 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.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.127.103601
