We propose an experiment for entangling two spatially separated Bose-Einstein condensates by Bragg scattering of light. When Bragg scattering in two condensates is stimulated by a common probe, the resulting quasiparticles or particles in the two condensates get entangled due to quantum communication between the condensates via the probe beam. The entanglement is shown to be significant and occurs in both number and quadrature phase variables and depends strongly on the relative detuning of the two pumps and the relative atom-field coupling strengths of the two condensates. We present two methods of detecting the generated entanglement.We propose an experiment for entangling two spatially separated Bose-Einstein condensates by Bragg scattering of light. When Bragg scattering in two condensates is stimulated by a common probe, the resulting quasiparticles or particles in the two condensates get entangled due to quantum communication between the condensates via the probe beam. The entanglement is shown to be significant and occurs in both number and quadrature phase variables and depends strongly on the relative detuning of the two pumps and the relative atom-field coupling strengths of the two condensates. We present two methods of detecting the generated entanglement.

arXiv:quant-ph/0206139Physical Review AFeb 10, 200314 citations

BRAGG SPECTROSCOPY OF AN ACCELERATING BOSE-EINSTEIN CONDENSATE

Katharine J. Challis, R. Geursen, R. J. Ballagh +1 more

Laser SpectroscopyFeb 1, 20040 citations

Dynamic effects of a Feshbach resonance on Bragg scattering from a Bose-Einstein condensate

Catarina E. Sahlberg, R. J. Ballagh, Crispin W. Gardiner

We present a theoretical model for Bragg scattering from a Bose-Einstein condensate (BEC) in the vicinity of a magnetic Feshbach resonance, using a two- $c$ -field formalism, one $c$ field for the atom and the other for a molecule formed of two atoms. We use this model to numerically simulate an experiment [Papp et al., Phys. Rev. Lett. 101, 135301 (2008)] investigating the effects of strong interactions on the Bragg spectrum from a ${}^{85}$ Rb BEC. Results from these simulations and from our previous calculations using an atom-molecule Bogoliubov approach are in very good quantitative agreement with the experimental results, confirming the importance of the resonance bound state in the dynamics of the condensate for fast experiments like Bragg scattering.We present a theoretical model for Bragg scattering from a Bose-Einstein condensate (BEC) in the vicinity of a magnetic Feshbach resonance, using a two-$c$-field formalism, one $c$ field for the atom and the other for a molecule formed of two atoms. We use this model to numerically simulate an experiment [Papp et al., Phys. Rev. Lett. 101, 135301 (2008)] investigating the effects of strong interactions on the Bragg spectrum from a ${}^{85}$Rb BEC. Results from these simulations and from our previous calculations using an atom-molecule Bogoliubov approach are in very good quantitative agreement with the experimental results, confirming the importance of the resonance bound state in the dynamics of the condensate for fast experiments like Bragg scattering.

Physical Review AApr 15, 20133 citations

Dynamics of rotating Bose-Einstein condensate with vortices

Sungjong Woo

Jan 1, 20070 citations

We present a theoretical model for Bragg scattering from a Bose-Einstein condensate (BEC) in the vicinity of a magnetic Feshbach resonance, using a two-

c

-field formalism, one

c

field for the atom and the other for a molecule formed of two atoms. We use this model to numerically simulate an experiment [Papp et al., Phys. Rev. Lett. 101, 135301 (2008)] investigating the effects of strong interactions on the Bragg spectrum from a

{}^{85}

Rb BEC. Results from these simulations and from our previous calculations using an atom-molecule Bogoliubov approach are in very good quantitative agreement with the experimental results, confirming the importance of the resonance bound state in the dynamics of the condensate for fast experiments like Bragg scattering.