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Tunable gauge potential for neutral and spinless particles in driven optical lattices.
We present a universal method to create a tunable, artificial vector gauge potential for neutral particles trapped in an optical lattice. The necessary Peierls phase of the hopping parameters betweenExpand
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Frequency Metrology in Quantum Degenerate Helium: Direct Measurement of the 2 3S1 → 2 1S0 Transition
Measurement of an extremely weak spectroscopic transition in helium hones fundamental atomic theories. Precision spectroscopy of simple atomic systems has refined our understanding of the fundamentalExpand
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Multiphoton interband excitations of quantum gases in driven optical lattices
We report on the observation of multiphoton interband absorption processes for quantum gases in shaken light crystals. Periodic inertial forcing, induced by a spatial motion of the lattice potential,Expand
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Engineering Ising-XY spin-models in a triangular lattice using tunable artificial gauge fields
A quantum gas trapped in an optical lattice of triangular symmetry can now be driven from a paramagnetic to an antiferromagnetic state by a tunable artificial magnetic field.
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Non-abelian gauge fields and topological insulators in shaken optical lattices.
Time-periodic driving like lattice shaking offers a low-demanding method to generate artificial gauge fields in optical lattices. We identify the relevant symmetries that have to be broken by theExpand
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Quantum phases in tunable state-dependent hexagonal optical lattices
We study the ground-state properties of ultracold bosonic atoms in a state-dependent graphenelike honeycomb optical lattice, where the degeneracy between the two triangular sublattices A and B can beExpand
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Frequency metrology in quantum degenerate helium
We report the first direct observation and high precision measurement of the triplet to singlet transition between the metastable states of helium. We obtain a precision of 8×10<sup>−12</sup>,Expand
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Optical traps for Ultracold Metastable Helium atoms
The thematics treated in this manuscript illustrate two specificities of ultracold metastable Helium gases: the ability to compare experimental measurement with precise theoretical evaluationsExpand
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Progress in the analysis of experimental chaos through periodic orbits
The understanding of chaotic systems can be considerably improved with the knowledge of their periodic-orbit structure. The identification of the low-order unstable periodic orbits embedded in aExpand
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Spin-orbit coupling in periodically driven optical lattices
We propose a method for the emulation of artificial spin orbit coupling in a system of ultracold, neutral atoms trapped in a tight-binding lattice. This scheme does not involve near-resonant laserExpand
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