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Proceedings Paper

Towards interferometric quantum lithography: observation of spatial quantum interference of the three-photon N00N state
Author(s): Yong-Su Kim; Osung Kwon; Sang Min Lee; Heonoh Kim; Sang-Kyung Choi; Hee Su Park; Yoon-Ho Kim
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Paper Abstract

Spatial interference of quantum mechanical particles exhibits a fundamental feature of quantum mechanics. A two-mode entangled state of N particles known as N00N state can give rise to non-classical interference. We report the first experimental observation of a three-photon N00N state exhibiting Young's double-slit type spatial quantum interference. Compared to a single-photon state, the three-photon entangled state generates interference fringes that are three times denser. Moreover, its interference visibility of 0.49 ± 0.09 is well above the limit of 0.1 for spatial super-resolution of classical origin. The demonstration of spatial quantum interference by a N00N state composed of more than two photons represents an important step towards applying quantum entanglement to technologies such as lithography and imaging.

Paper Details

Date Published: 7 September 2011
PDF: 7 pages
Proc. SPIE 8163, Quantum Communications and Quantum Imaging IX, 816314 (7 September 2011); doi: 10.1117/12.903886
Show Author Affiliations
Yong-Su Kim, Pohang Univ. of Science and Technology (Korea, Republic of)
Osung Kwon, Pohang Univ. of Science and Technology (Korea, Republic of)
Sang Min Lee, Korea Research Institute of Standards and Science (Korea, Republic of)
Heonoh Kim, Pohang Univ. of Science and Technology (Korea, Republic of)
Sang-Kyung Choi, Korea Research Institute of Standards and Science (Korea, Republic of)
Hee Su Park, Korea Research Institute of Standards and Science (Korea, Republic of)
Yoon-Ho Kim, Pohang Univ. of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 8163:
Quantum Communications and Quantum Imaging IX
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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