G. B. Lemos, R. M. Gomes, S. P. Walborn, P. H. Souto Ribeiro, F. Toscano
We implement the quantum Kicked Harmonic Oscillator (KHO) in the spatial degrees of freedom of light. We measure the time-evolved Wigner function directly, and observe signatures of quantum non-linear dynamics. Our setup is decoherence-free and we can control experimental parameters to explore the transition from regular to essentially chaotic dynamics, as well as the quantum-classical transition. Due to this robustness and versatility, our scheme can be used to experimentally explore a variety of non-linear quantum phenomena. As an example, we couple this system to a quantum bit and experimentally investigate the decoherence produced by regular or chaotic dynamics.
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http://arxiv.org/abs/1207.5465
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