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Double barrier potentials for matter-wave gap solitons
V. Ahufinger, B. A. Malomed, G. Birkl +2
We investigate collisions of solitons of the gap type, supported by a lattice potential in repulsive Bose-Einstein condensates, with an effective double-barrier potential that rese…
Quantum Non-Demolition Detection of Strongly Correlated Systems
Kai Eckert, Oriol Romero-Isart, Mirta Rodriguez +3
Preparation, manipulation, and detection of strongly correlated states of quantum many body systems are among the most important goals and challenges of modern physics. Ultracold a…
Quantum switches and quantum memories for matter-wave lattice solitons
V. Ahufinger, A. Mebrahtu, R. Corbalan +1
We study the possibility of implementing a quantum switch and a quantum memory for matter wave lattice solitons by making them interact with "effective" potentials (barrier/well) c…
Quantum polarization spectroscopy of ultracold spinor gases
K. Eckert, L. Zawitkowski, A. Sanpera +2
We propose a method for the detection of ground state quantum phases of spinor gases through a series of two quantum nondemolition measurements performed by sending off-resonant, p…
Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
Maciej Lewenstein, Anna Sanpera, Veronica Ahufinger +3
We review recent developments in the physics of ultracold atomic and molecular gases in optical lattices. Such systems are nearly perfect realisations of various kinds of Hubbard m…
Ultracold atomic Bose and Fermi spinor gases in optical lattices
K. Eckert, L. Zawitkowski, M. J. Leskinen +2
We investigate magnetic properties of Mott-insulating phases of ultracold Bose and Fermi spinor gases in optical lattices. We consider in particular the F=2 Bose gas, and the F=3/2…