Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 60: Quantum Information: Photons and Nonclassical Light 2

Q 60.2: Talk

Friday, March 18, 2011, 10:45–11:00, SCH 251

Entangling photons via the quantum Zeno effect — Ralf Schützhold, Andreas Osterloh, and •Nicolai ten Brinke — Fakultät für Physik, Universität Duisburg-Essen, Lotharstraße 1, D-47057 Duisburg, Germany

We present an approach for entangling photons using the quantum Zeno effect and strong two-photon absorption. The quantum Zeno effect describes the suppression of the time evolution of a quantum state by frequent measurements. This effect can be employed for entanglement generation, e.g., to implement a quantum-CNOT gate in a linear optics approach to quantum computing. In contrast to previous proposals, our approach might also work in free space, i.e., without resonators or cavities.