Ghost telescope and ghost Fourier telescope with thermal light

李洪国, 张颖涛, 曹德忠 +2 more

Ronald E. Meyers, Keith S. Deacon, Arnold D. Tunick

Turbulence is a serious problem for long distance imaging such as from satellites or ground based telescopes. In this paper we discuss our turbulence-free ghost imaging1 approach that is virtually free from the degrading effects of turbulence. We discuss motivation for the experiments, theory, experimental setup, procedures, and results. The results suggest that thermal two-photon interference may not only be used to improve imaging through turbulence but may also lead to a resource for quantum information processing.

Ying-Chuan Liu, Le‐Man Kuang

In this paper, we propose a theoretical scheme of many-ghost imaging in terms of $N$th-order correlated thermal light. We obtain the Gaussian thin lens equations in the many-ghost imaging protocol. We show that it is possible to produce $N\ensuremath{-}1$ ghost images of an object at different places in a nonlocal fashion by means of a higher order correlated imaging process with an $N$th-order correlated thermal source and correlation measurements. We investigate the visibility of the ghost images in the scheme and obtain the upper bounds of the visibility for the $N$th-order correlated thermal-light ghost imaging. It is found that the visibility of the ghost images can be dramatically enhanced when the order of correlation becomes larger. It is pointed out that the many-ghost imaging phenomenon is an observable physical effect induced by higher order coherence or higher order correlations of optical fields.

Dainis Dravins

Anonymous

Barbara A. Capron, Claudio G. Parazzoli, Jeff C. Adams

We show SNR comparisons of 4th order ghost images from PDC and 2nd order thermal images from single beams. Ghost imaging yields low background and shows improvement of the entangled light over thermal light SNR.