Physics – Quantum Physics
Scientific paper
2010-06-24
Science, 329(5998):1500-1503, 2010
Physics
Quantum Physics
Scientific paper
10.1126/science.1193515
Quantum walks of correlated particles offer the possibility to study large-scale quantum interference, simulate biological, chemical and physical systems, and a route to universal quantum computation. Here we demonstrate quantum walks of two identical photons in an array of 21 continuously evanescently-coupled waveguides in a SiOxNy chip. We observe quantum correlations, violating a classical limit by 76 standard deviations, and find that they depend critically on the input state of the quantum walk. These results open the way to a powerful approach to quantum walks using correlated particles to encode information in an exponentially larger state space.
Bromberg Yaron
Ismail Nur
Lahini Yoav
Lobino Mirko
Matsuda Nobuyuki
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