Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 54: Teilchenoptik

Q 54.3: Vortrag

Donnerstag, 22. März 2007, 12:30–12:45, 5K

Emission-time entanglement of massive particles — •Clemens Gneiting and Klaus Hornberger — Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München

We propose a scheme for the demonstration of macroscopic entanglement of two massive particles, employing the concept of emission-time entanglement. Given two initially bound particles, emission-time entanglement occurs, when the state of the system at later time is described by a coherent superposition corresponding to various separation times. So far, this type of entanglement has only been realized in the case of photons. We discuss whether the verification of entanglement by coincidence-interference remains possible when accounting for dispersive matter waves and investigate whether an implementation of the scheme by the controlled dissociation and subsequent atom-optical manipulation of ultracold molecules is realistic with current experimental technology. Such an experiment would test so far unconfirmed predictions of QM, such as the entanglement of massive, macroscopically separate particles in their spatial degrees of freedom.