End-to-end entanglement in Bose-Hubbard chains

Abstract

We study the ground state as well as the dynamics of chains of bosons with local repulsive interactions and nearest-neighbour exchange using numerical techniques based on density matrix decimation. We explore the development of entanglement between the terminal sites of such chains as mechanisms are invoked to concentrate population in these sites. We find that long-range entanglement in the ground state emerges as a result of hopping taking place at the whole chain length in systems with appropriate hopping coefficients. Additionally, we find appropriate perturbations to increase the entanglement between the end sites above their ground state values.

7 pages, 8 figures

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Cited by in corpus (7)

• Spreading of entanglement and steering along small Bose-Hubbard chains
• Vibrational exciton-mediated quantum state transfert: a simple model
• General conditions for the generation of long-distance entanglement
• Long distance entanglement in one-dimensional quantum systems under sinusoidal deformation
• Mode folding in systems with local interaction: unitary and non-unitary transformations using tensor states
• Role of external fields in enhancing long-distance entanglement at finite temperatures
• Quantum Effects In Low Temperature Bosonic Systems