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arXiv · 1503.07044

Multistable particle-field dynamics in cavity-generated optical lattices

Dominik J. Winterauer·Wolfgang Niedenzu·Helmut Ritsch
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Abstract

Polarizable particles trapped in a resonator-sustained optical-lattice potential generate strong position-dependent backaction on the intracavity field. In the quantum regime particles in different energy bands are connected to different intracavity light intensities and optical-lattice depths. This generates a highly nonlinear coupled particle-field dynamics. For a given pump strength and detuning, a factorizing mean-field approach predicts several self-consistent stationary solutions of strongly distinct photon numbers and motional states. Quantum Monte Carlo wavefunction simulations of the master equation confirm these predictions and reveal complex multi-modal photon-number and particle-momentum distributions. Using larger nanoparticles in such a setup thus constitutes a well-controllable playground to study nonlinear quantum dynamics and the buildup of macroscopic quantum superpositions at the quantum-classical boundary.

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Dominik J. Winterauer, Wolfgang Niedenzu, Helmut Ritsch. 2015-05-19. Multistable particle-field dynamics in cavity-generated optical lattices. https://doi.org/10.1103/physreva.91.053829

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