Particle-hole entanglement of ultracold atoms in an optical lattice

Abstract

We study the ground state of two-component bosonic atoms in a one-dimensional optical lattice. By applying an external field to the atoms at one end of lattice, the atoms are transported and becomes localized at that site. The holes are then created in the remaining sites. The particle-hole superpositions are produced in this process. We investigate the entanglement entropy between the atoms in the two different parts of a lattice. A large degree of particle-hole entanglement is generated in the ground state. The particle-hole quantum correlations can be probed by the two-site parity correlation functions. The transport properties of the low-lying excited states are also discussed.

5 pages, 8 figures

References in corpus (10)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Light-cone-like spreading of correlations in a quantum many-body system
• Single-Spin Addressing in an Atomic Mott Insulator
• Measuring entanglement growth in quench dynamics of bosons in an optical lattice
• Observation of Correlated Particle-Hole Pairs and String Order in Low-Dimensional Mott Insulators
• Measuring entanglement entropy of a generic many-body system with a quantum switch
• Exact diagonalization: the Bose-Hubbard model as an example
• Heating dynamics of bosonic atoms in a noisy optical lattice
• Theory of correlations between ultra-cold bosons released from an optical lattice
• Coherent control of atomic spin currents in a double well