Preparation of a quantum state with one molecule at each site of an optical lattice

Abstract

Ultracold gases in optical lattices are of great interest, because these systems bear a great potential for applications in quantum simulations and quantum information processing, in particular when using particles with a long-range dipole-dipole interaction, such as polar molecules. Here we show the preparation of a quantum state with exactly one molecule at each site of an optical lattice. The molecules are produced from an atomic Mott insulator with a density profile chosen such that the central region of the gas contains two atoms per lattice site. A Feshbach resonance is used to associate the atom pairs to molecules. Remaining atoms can be removed with blast light. The technique does not rely on the molecule-molecule interaction properties and is therefore applicable to many systems.

References in corpus (26)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Cold bosonic atoms in optical lattices
• Quantum computation with trapped polar molecules
• A toolbox for lattice spin models with polar molecules
• Production of cold molecules via magnetically tunable Feshbach resonances
• Transition from a strongly interacting 1D superfluid to a Mott insulator
• Creation of ultracold molecules from a Fermi gas of atoms
• Repulsively bound atom pairs in an optical lattice
• Quantum phases of dipolar bosons in optical lattices
• Conversion of an Atomic Fermi Gas to a Long-Lived Molecular Bose Gas
• Optical Production of Ultracold Polar Molecules
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• Molecules of Fermionic Atoms in an Optical Lattice
• Observation of molecules produced from a Bose-Einstein condensate
• Formation of Quantum-Degenerate Sodium Molecules
• Quantum magnetism with multicomponent polar molecules in an optical lattice
• Creation of a molecular condensate by dynamically melting a Mott-insulator
• Phase coherence of an atomic Mott insulator
• Long-lived Feshbach molecules in a 3D optical lattice
• Creation of a dipolar superfluid in optical lattices
• Characterization of elastic scattering near a Feshbach resonance in rubidium 87
• Dissociation of ultracold molecules with Feshbach resonances
• Quantum Computation with Diatomic Bits in Optical Lattices
• Raman-induced oscillation between an atomic and a molecular quantum gas

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• Coherent control of a self-trapped Bose-Einstein condensate
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• Localized spatially nonlinear matter waves in atomic-molecular Bose-Einstein condensates with space-modulated nonlinearity