Konferenz 519th WE-Heraeus-Seminar
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With kind support by the WE-Heraeus Foundation.

519th WE-Heraeus-Seminar



November 25–28, 2012

Physikzentrum Bad Honnef, Bad Honnef, Germany

Organizers: Arno Rauschenbeutel & Fedor Jelezko

A hybrid quantum system consists of two or more different quantum systems which are interconnected using electromagnetic interaction. The resulting coupling between different degrees of freedom leads to a multitude of novel possibilities for controlling and for manipulating quantum states. In particular, it becomes possible to employ the different constituents of such a hybrid quantum system in order to realize distinct functionalities. Using a light–matter quantum interface, e.g., enables the transfer of quantum coherence between quantum bits with complementary properties – such as atoms and semiconductor quantum dots – and thereby create entanglement between the latter.

This opens new approaches for the development of hardware component for quantum communication and quantum information processing applications, which profit from the advantages of the individual systems: While some quantum systems, like atoms, are well suited for storing quantum information for extended periods of time, others, like solid state systems, exhibit a strong interaction and a non-linear dynamics that allows one to implement fast quantum gates. Yet other quantum systems, like optical photons, are ideally suited for the transmission of quantum information over macroscopic distances. Moreover, hybrid quantum systems can be used to study the docoherence processes that occur in solid state systems. And finally, they offer the unique perspective to scale up atomic systems in order to controllably prepare non-local entangled states as well as complex many-body systems.

With the seminar, we aim to gather about 20 world leading experts on the coupling and interfacing of different quantum systems and to bring them into contact with a group of about 60 attendees. In addition to the 45 min talks, there will be ample time for informal meetings which will allow us to mingle ideas, to investigate new directions, and to establish cross connections between the various fields and theoretical vistas.