Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 26: Quantum Information: Atoms and Ions 2

Q 26.5: Vortrag

Mittwoch, 16. März 2011, 11:45–12:00, HÜL 386

Towards a single-atom quantum memory — •Christian Nölleke, Holger Specht, Andreas Reiserer, Manuel Uphoff, Eden Figueroa, Stephan Ritter, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching

The implementation of quantum networks composed of stationary nodes and photonic channels requires the development of quantum interconnects, featuring the coherent and reversible mapping of quantum information between light and matter. So far, these interfaces have largely been based upon the engineered exchange of information between photons and collective atomic excitations. A promising alternative is the development of an interface between a single quantum of light and a single particle of matter (e.g. single atoms). This approach has fundamental advantages as it allows for the individual manipulation of the atomic qubit and opens possibilities for in situ processing of stored qubits. We report on the current status of our experiment towards the most fundamental implementation of a quantum memory, based on a single neutral atom trapped inside a high-finesse optical cavity. This experiment is a major step in the development of a universal node of a quantum network, capable of fully controlled photon generation, qubit storage and with intriguing perspectives towards the development of quantum gates.