Production and manipulation of wave packets from ultracold atoms in an optical lattice
arXiv:1306.1082 · doi:10.1103/PhysRevA.88.023620
Abstract
Within the combined potential of an optical lattice and a harmonic magnetic trap, it is possible to form matter wave packets by intensity modulation of the lattice. An analysis of the production and motion of these wave packets provides a detailed understanding of the dynamical evolution of the system. The modulation technique also allows for a controllable transfer (de-excitation) of atoms from such wave packets to a state bound by the lattice. Thus, it acts as a beam splitter for matter waves that can selectively address different bands, enabling the preparation of atoms in selected localized states. The combination of wave packet creation and de-excitation closely resembles the well-known method of pump-probe spectroscopy. Here, we use the de-excitation for precision spectroscopy of the anharmonicity of the magnetic trap. Finally, we demonstrate that lattice modulation can be used to excite matter wave packets to even higher momenta, producing fast wave packets with potential applications in precision measurements.
9 pages, 10 figures
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- Controlled Generation of Nonlinear Resonances through Sinusoidal Lattice Modes in Bose-Einstein Condensate
- Selective population of a large-angular-momentum state in an optical lattice
- Exploring spin-squeezing in the Mott insulating regime: role of anisotropy, inhomogeneity and hole doping
- A significantly stable mode of the ultracold atomic wave packet in amplitude modulated parabolic optical lattices
- Emission of particles from a parametrically driven condensate in a one-dimensional lattice
- Dynamics of fermions in an amplitude modulated lattice
- Fast and selective inter-band transfer of ultracold atoms in bichromatic lattices permitting Dirac points
- Loading ultracold atoms onto nonlinear Bloch states and soliton states in bichromatic lattices
- Nonlinear effects on charge fractionalization in critical chains