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We show that two-dimensional continuous time coherent random walks are possible in free space by properly tailoring the associated initial wave functions. Theoretical predictions along with classical experiments demonstrate the feasibility of our scheme.
We propose a versatile platform for generating multipartite W-states in appropriately engineered on-chip photonic lattices. One and two dimensional waveguide configurations are investigated for producing W-states with predesigned probability amplitudes and relative phases.
We introduce a multiport waveguide array beam-splitter that emulates the action of the angular momentum matrix Jx. Quantum transformations carried out by such devices are discussed and pertinent examples are provided.
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