Simulations of two-particle interactions with 2D quantum walks in time

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Conference Proceeding
AIP Conference Proceedings, 2014, 1633 pp. 204 - 209
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© 2014 AIP Publishing LLC. We present the experimental implementation of a quantum walk on a two-dimensional lattice and show how to employ the optical system to simulate the quantum propagation of two interacting particles. Our quantum walk in time transfers the spatial spread of a quantum walk into the time domain, which guarantees a high stability and scalability of the setup. We present with our device quantum walks over 12 steps on a 2D lattice. By changing the properties of the driving quantum coin, we investigate different kinds of two-particle interactions and reveal their impact on the occurring quantum propagation.
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