## Observation of Young’s double-slit interference with the three-photon N00N state |

Optics Express, Vol. 19, Issue 25, pp. 24957-24966 (2011)

http://dx.doi.org/10.1364/OE.19.024957

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### 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.

© 2011 OSA

**OCIS Codes**

(270.0270) Quantum optics : Quantum optics

(270.4180) Quantum optics : Multiphoton processes

(270.5585) Quantum optics : Quantum information and processing

**ToC Category:**

Quantum Optics

**History**

Original Manuscript: September 16, 2011

Revised Manuscript: October 21, 2011

Manuscript Accepted: November 14, 2011

Published: November 22, 2011

**Citation**

Yong-Su Kim, Osung Kwon, Sang Min Lee, Jong-Chan Lee, Heonoh Kim, Sang-Kyung Choi, Hee Su Park, and Yoon-Ho Kim, "Observation of Young’s double-slit interference with the three-photon N00N state," Opt. Express **19**, 24957-24966 (2011)

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-25-24957

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