Detection and engineering of spatial mode entanglement with ultracold bosons
American Physical Society
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.
Impenetrable bosons , Coherence , systems , Physics , Gases
Goold, J., Heaney, L., Busch, T. and Vedral, V. (2009) 'Detection and engineering of spatial mode entanglement with ultracold bosons', Physical Review A, 80(2), 022338 (5pp). doi: 10.1103/PhysRevA.80.022338
© 2009, American Physical Society