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      <subfield code="a">Boada, O.</subfield>
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      <subfield code="a">Lewenstein, Maciej</subfield>
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      <subfield code="a">Latorre, José Ignacio</subfield>
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      <subfield code="a">We present a general strategy to simulate a D + 1 -dimensional quantum system using a D -dimensional one. We analyze in detail a feasible implementation of our scheme using optical lattice technology. The simplest nontrivial realization of a fourth dimension corresponds to the creation of a bi-volume geometry. We also propose single- and many-particle experimental signatures to detect the effects of the extra dimension.</subfield>
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