Berlin 2014 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 9: Matter wave optics II

Q 9.5: Talk

Monday, March 17, 2014, 15:00–15:15, DO26 208

Optomechanical Interface for Probing Matter-Wave Coherence — •Hendrik Ulbricht¹, André Xuereb^{2, 3}, and Mauro Paternostro² — ¹Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK — ²Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, BT7 1NN, UK — ³Department of Physics, University of Malta, Msida MSD2080, Malta

We combine matter-wave interferometry and cavity optomechanics to propose a coherent matter-light interface based on mechanical motion at the quantum level. We demonstrate a mechanism that is able to transfer non-classical features imprinted on the state of a matter-wave system to an optomechanical device, transducing them into distinctive interference fringes. This provides a reliable tool for the inference of quantum coherence in the particle beam. Moreover, we discuss how our system allows for intriguing perspectives, paving the way to the construction of a device for the encoding of quantum information in matter-wave systems. Our proposal, which highlights previously unforeseen possibilities for the synergistic exploitation of these two experimental platforms, is explicitly based on existing technology, available and widely used in current cutting-edge experiments.