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Q: Fachverband Quantenoptik und Photonik

Q 42: Poster: Quantum Optics and Photonics III

Q 42.36: Poster

Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof

Entanglement purification of distant atomic Qubits with ancillary multiphoton states — •Ludwig Kunz, József Zsolt Bernád, Mauricio Torres, and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany

We propose a scheme for conducting entanglement purification on distant two-level atoms. The atomic qubits are sent through a cavity one after the other and interact with a single mode of the radiation field inside the cavity. The atoms are post-selected by measuring the cavity field with the help of a balanced homodyne detection. It is demonstrated that the resulting quantum operation is a convenient basic building block for an entanglement purification protocol.