Shaking the entropy out of a lattice: atomic filtering by vibrational excitations

Abstract

We present a simple and efficient scheme to reduce atom-number fluctuations in optical lattices. The interaction-energy difference for atoms in different vibrational states is used to remove excess atomic occupation. The remaining vacant sites are then filled with atoms by merging adjacent wells, for which we implement a protocol that circumvents the constraints of unitarity. The preparation of large regions with precisely one atom per lattice site is discussed for both bosons and fermions. The resulting low-entropy Mott-insulating states may serve as high-fidelity register states for quantum computing and as a starting point for investigations of many-body physics.

8 pages, 7 figures, version accepted by PRA

References in corpus (12)

• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• Single-Spin Addressing in an Atomic Mott Insulator
• Experimental demonstration of painting arbitrary and dynamic potentials for Bose-Einstein condensates
• Imaging the Mott Insulator Shells using Atomic Clock Shifts
• Cooling in strongly correlated optical lattices: prospects and challenges
• Orbital excitation blockade and algorithmic cooling in quantum gases
• Manipulation of Single Neutral Atoms in Optical Lattices
• A quantum computation architecture using optical tweezers
• Quantum computing implementations with neutral particles
• 3D Projection Sideband Cooling
• Ground state cooling of atoms in optical lattices

Cited by in corpus (7)

• Single-Spin Addressing in an Atomic Mott Insulator
• Cooling and entangling ultracold atoms in optical lattices
• Orbital excitation blockade and algorithmic cooling in quantum gases
• Quantum gas microscopy with spin, atom-number and multi-layer readout
• Non-Gaussian distribution of collective operators in quantum spin chains
• Filtering single atoms from Rydberg blockaded mesoscopic ensembles
• Protocol for autonomous rearrangement of cold atoms into low-entropy configurations