Hamburg 2009 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 64: Quanteneffekte: Verschränkung

Q 64.4: Vortrag

Freitag, 6. März 2009, 14:45–15:00, VMP 6 HS-D

Dissociation-induced entanglement in the motion of material particles — •Clemens Gneiting and Klaus Hornberger — Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München

The controlled dissociation of Feshbach molecules permits one to generate pairs of counterpropagating atoms that are entangled in their motional degrees of freedom. Sequences of dissociation pulses may result in delocalized single-particle states that can be manipulated by addressing individual spatial components. We describe a scheme based on dissociating trapped ultracold Feshbach molecules into an atom guide and discuss possible tests of non-classicality that would be made possible by choosing appropriate dissociation pulses. In particular, the generation of `dissociation-time' entangled atom pairs, processed by subsequent Mach-Zehnder interferometric devices, permits to violate a Bell inequality based only on the motional entanglement of the particles [1].

[1] C. Gneiting and K. Hornberger, Phys. Rev. Lett. (2008), in press