6533b823fe1ef96bd127ecf1
RESEARCH PRODUCT
Shaking the entropy out of a lattice:atomic filtering by vibrational excitations
Jacob F. ShersonMalte C. TichyKlaus Mølmersubject
PhysicsCondensed Matter::Quantum GasesQuantum PhysicsOptical latticeUnitarityCluster stateFOS: Physical sciencesFermion01 natural sciencesAtomic and Molecular Physics and Optics010305 fluids & plasmasquant-phQuantum Gases (cond-mat.quant-gas)Lattice (order)Quantum mechanics0103 physical sciencesAtomAtomic physicsCondensed Matter - Quantum GasesQuantum Physics (quant-ph)010306 general physicscond-mat.quant-gasQuantum computerBosondescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-09-17 |