EPR-based ghost imaging using a single-photon-sensitive camera

被引:140
作者
Aspden, Reuben S. [1 ]
Tasca, Daniel S. [1 ]
Boyd, Robert W. [2 ,3 ]
Padgett, Miles J. [1 ]
机构
[1] Univ Glasgow, Sch Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland
[2] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
[3] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada
基金
英国工程与自然科学研究理事会;
关键词
QUANTUM;
D O I
10.1088/1367-2630/15/7/073032
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Correlated photon imaging, popularly known as ghost imaging, is a technique whereby an image is formed from light that has never interacted with the object. In ghost imaging experiments, two correlated light fields are produced. One of these fields illuminates the object, and the other field is measured by a spatially resolving detector. In the quantum regime, these correlated light fields are produced by entangled photons created by spontaneous parametric down-conversion. To date, all correlated photon ghost imaging experiments have scanned a single-pixel detector through the field of view to obtain spatial information. However, scanning leads to poor sampling efficiency, which scales inversely with the number of pixels, N, in the image. In this work, we overcome this limitation by using a time-gated camera to record the single-photon events across the full scene. We obtain high-contrast images, 90%, in either the image plane or the far field of the photon pair source, taking advantage of the Einstein-Podolsky-Rosen-like correlations in position and momentum of the photon pairs. Our images contain a large number of modes, > 500, creating opportunities in low-light-level imaging and in quantum information processing.
引用
收藏
页数:11
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