Quantum Walks of Correlated Photons

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Peruzzo, Albert and Lobino, Mirko and Matthews, Jonathan C. F. and Matsuda, Nobuyuki and Politi, Alberto and Poulios, Konstantinos and Zhou, Xiao-Qi and Lahini, Yoav and Ismail, Nur and Wörhoff, Kerstin and Bromberg, Yaron and Silberberg, Yaron and Thompson, Mark G. and OBrien, Jeremy L. (2010) Quantum Walks of Correlated Photons. Science, 329 (5998). pp. 1500-1503. ISSN 0036-8075

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Abstract:Quantum walks of correlated particles offer the possibility of studying large-scale quantum interference; simulating biological, chemical, and physical systems; and providing a route to universal quantum computation. We have demonstrated quantum walks of two identical photons in an array of 21 continuously evanescently coupled waveguides in a SiOxNy chip. We observed quantum correlations, violating a classical limit by 76 standard deviations, and found that the correlations depended critically on the input state of the quantum walk. These results present a powerful approach to achieving quantum walks with correlated particles to encode information in an exponentially larger state space.
Item Type:Article
Copyright:© 2010 AAAS
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/73925
Official URL:http://dx.doi.org/10.1126/science.1193515
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