Coupling of Electronic and Motional Dynamics in a Cold Atom Optical Lattice

Abstract

We study the coupling of internal electronic excitations to vibrational modes of the external motion of ultracold atoms in an optical lattice. For different ground and excited state potentials the on-site coupling of excitations and vibrations term renormalizes the effective electronic transition energy, which appears e.g. in clock transitions. In addition in the Mott state with filling factor one, the dipole-dipole coupling between neighbouring sites includes emission and absorption of vibrational quanta. Such processes create a significant mechanism for excitation of vibrations leading to motional heating of the lattice atoms by resonant light interaction. We calculate estimates of the corresponding parameters from a perturbation expansion in small atomic displacements.

4 pages, 5 figures

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Cited by in corpus (6)

• REVIEW. Quantum optics with ultracold quantum gases: towards the full quantum regime of the light-matter interaction
• Collective Enhancement and Suppression of Excitation Decay in Optical Lattices
• Spectrum of Light in a Quantum Fluctuating Periodic Structure
• Quantum optics with quantum gases: controlled state reduction by designed light scattering
• Quantum Phases of Ultracold Bosonic Atoms in two Bands of an Optical-Lattice coupled by a Cavity Field
• Excitons and Cavity Polaritons for Optical Lattice Ultracold Atoms