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arXiv · 1105.2312

Quantum spatial superresolution by optical centroid measurements

Heedeuk Shin·Kam Wai Clifford Chan·Hye Jeong Chang·Robert W. Boyd
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Abstract

Quantum lithography (QL) has been suggested as a means of achieving enhanced spatial resolution for optical imaging, but its realization has been held back by the low multi-photon detection rates of recording materials. Recently, an optical centroid measurement (OCM) procedure was proposed as a way to obtain spatial resolution enhancement identical to that of QL but with higher detection efficiency (M. Tsang, Phys. Rev. Lett. 102, 253601, 2009). Here we describe a variation of the OCM method with still higher detection efficiency based on the use of photon-number-resolving detection. We also report laboratory results for two-photon interference. We compare these results with those of the standard QL method based on multi-photon detection and show that the new method leads to superresolution but with higher detection efficiency.

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Heedeuk Shin, Kam Wai Clifford Chan, Hye Jeong Chang, Robert W. Boyd. 2011-05-11. Quantum spatial superresolution by optical centroid measurements. https://doi.org/10.1103/physrevlett.107.083603

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