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Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 5: SAMOP Dissertation Prize Symposium

A 5.3: Hauptvortrag

Montag, 12. März 2012, 15:00–15:30, V47.01

Broadband Optical Quantum Memory at Room Temperature — •Klaus Reim — Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom — Department of Physics, ETH Zurich, CH-8093 Zurich, Switzerland

The quest for upgrading our current, classical information technology architecture with quantum technology is on. Imagine a global quantum network where quantum information is generated and processed in local nodes using future quantum computers and then shared with people on different continents via completely secure quantum channels. Such a quantum network does require several components to function properly, and a quantum memory must certainly be one of them!

In my talk I am going to present our ensemble-based, far off-resonant Raman-approach to quantum memories and explain what distinguishes it from other quantum memories. Furthermore, I will discuss the experimental challenges we faced, e.g. the generation of the 9.2 GHz frequency-shifted single-photon-level signal field or its separation from the co-propagating, 10 orders of magnitude stronger control field. I will explain how we managed to implement this broadband and robust quantum memory scheme and point out its potential for future quantum applications.

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