Work

Detection and engineering of spatial mode entanglement with ultracold bosons

Year: 2009

Type: article

Abstract: We outline an interferometric scheme for the detection of bimode and multimode spatial entanglement of finite-temperature interacting Bose gases. Whether entanglement is present in the gas depends on the existence of the single-particle reduced density matrix between different regions of space. We apply the scheme to the problem of a harmonically trapped repulsive boson pair and show that while entanglement is rapidly decreasing with temperature, a significant amount remains for all interaction strengths at zero temperature. Thus, by tuning the interaction parameter, the distribution of entanglement between many spatial modes can be modified.

Source: Physical Review A

DOI: 10.1103/physreva.80.022338

Authors: J. Goold, Libby Heaney, Th. Busch, V. Vedral

Institutions: University College Cork, Centre for Quantum Technologies, National University of Singapore, University of Leeds

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

Award: G6617714780