Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 32: SYPC 1: From Atoms to Photonic Circuits 1

A 32.3: Vortrag

Donnerstag, 15. März 2012, 11:30–11:45, V47.01

Quantum networking with time-bin encoded qubits, qutrits and qquads using single photons from an atom-cavity system — Peter B. R. Nisbet-Jones, Jerome Dilley, Oliver Barter, •Annemarie Holleczek, and Axel Kuhn — Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU

We report on the production of time-bin encoded qubits, qutrits and qquads which are one fundamental building block in quantum information processing, networking and cryptography. They are produced by full coherent control of the single-photon generation in a strongly coupled atom-cavity system. This allows for the preparation of single photons in an n-time-bin superposition state with arbitrarily defined amplitudes and phases. The qubits’, qutrits’ and qquads’ properties are determined and demonstrated with the help of a small linear optics quantum network [1].

[1] P. B. R. Nisbet-Jones, et al., "Quantum networking with time-bin encoded qubits, qutrits and qquads using single photons from an atom-cavity system," in preparation (2011).