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arXiv · 1511.03569

Quantum Walks With Neutral Atoms: Quantum Interference Effects of One and Two Particles

Carsten Robens·Stefan Brakhane·Dieter Meschede·Andrea Alberti
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Abstract

We report on the state of the art of quantum walk experiments with neutral atoms in state-dependent optical lattices. We demonstrate a novel state-dependent transport technique enabling the control of two spin-selective sublattices in a fully independent fashion. This transport technique allowed us to carry out a test of single-particle quantum interference based on the violation of the Leggett-Garg inequality and, more recently, to probe two-particle quantum interference effects with neutral atoms cooled into the motional ground state. These experiments lay the groundwork for the study of discrete-time quantum walks of strongly interacting, indistinguishable particles to demonstrate quantum cellular automata of neutral atoms.

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Carsten Robens, Stefan Brakhane, Dieter Meschede, Andrea Alberti. 2015-11-11. Quantum Walks With Neutral Atoms: Quantum Interference Effects of One and Two Particles. https://doi.org/10.1142/9789813200616_0001

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