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Correlated Molecular Quantum Gases in Optical Lattices

Objective

In a quantum engineering approach we aim to create strongly correlated molecular quantum gases for polar molecules confined in an optical lattice to two-dimensional geometry with full quantum control of all de-grees of freedom with single molecule control and detection. The goal is to synthesize a high-fidelity molec-ular quantum simulator with thousands of particles and to carry out experiments on phases and dynamics of strongly-correlated quantum matter in view of strong long-range dipolar interactions. Our choice of mole-cule is the KCs dimer, which can either be a boson or a fermion, allowing us to prepare and probe bosonic as well as fermionic dipolar quantum matter in two dimensions. Techniques such as quantum-gas microscopy, perfectly suited for two-dimensional systems, will be applied to the molecular samples for local control and local readout.
The low-entropy molecular samples are created out of quantum degenerate atomic samples by well-established coherent atom paring and coherent optical ground-state transfer techniques. Crucial to this pro-posal is the full control over the molecular sample. To achieve near-unity lattice filling fraction for the mo-lecular samples, we create two-dimensional samples of K-Cs atom pairs as precursors to molecule formation by merging parallel planar systems of K and Cs, which are either in a band-insulating state (for the fermions) or in Mott-insulating state (for the bosons), along the out-of-plane direction.
The polar molecular samples are used to perform quantum simulations on ground-state properties and dy-namical properties of quantum many-body spin systems. We aim to create novel forms of superfluidity, to investigate into novel quantum many-body phases in the lattice that arise from the long-range molecular dipole-dipole interaction, and to probe quantum magnetism and its dynamics such as spin transport with single-spin control and readout. In addition, disorder can be engineered to mimic real physical situations.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

ERC-ADG - Advanced Grant

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Call for proposal

(opens in new window) ERC-2017-ADG

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Host institution

UNIVERSITAET INNSBRUCK
Net EU contribution
€ 2 356 117,00
Address
INNRAIN 52
6020 Innsbruck
Austria
Region
Westösterreich Tirol Innsbruck
Activity type
Higher or Secondary Education Establishments
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Total cost
€ 2 356 117,00

Beneficiaries (1)