Matthias U. Staudt

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Coherent and reversible mapping of quantum information between light and matter is an important experimental challenge in quantum information science. In particular, it is an essential requirement for the implementation of quantum networks and quantum repeaters. So far, quantum interfaces between light and atoms have been demonstrated with atomic gases, and(More)
We investigated the preservation of information encoded into the relative phase and amplitudes of optical pulses during storage and retrieval in an optical memory based on stimulated photon echo. By interfering photon echoes produced in a single-mode Ti:Er:LiNbO(3) waveguide, we found that decoherence in the medium translates only as loss and not as(More)
High-visibility interference of photon echoes generated in spatially separated solid-state atomic ensembles is demonstrated. The solid-state ensembles were LiNbO(3) waveguides doped with erbium ions absorbing at 1.53 microm. Bright coherent states of light in several temporal modes (up to 3) are stored and retrieved from the optical memories using two-pulse(More)
Matthias U. Staudt, Sara R. Hastings-Simon, Mikael Afzelius, Didier Jaccard, Wolfgang Tittel, 3 and Nicolas Gisin Group of Applied Physics, University of Geneva, CH-1211 Geneva 4, Switzerland Départment de Physique de la Matière Condensée, University of Geneva, 24 Quai Ernest Anserment, 1211 Geneva 4, Switzerland Institute for Quantum Information Science,(More)
We describe a multi-mode quantum memory for propagating microwave photons that combines a solid-state spin ensemble resonantly coupled to a frequency tunable single-mode microwave cavity. We first show that high efficiency mapping of the quantum state transported by a free photon to the spin ensemble is possible both for strong and weak coupling between the(More)
Sara R. Hastings-Simon, Matthias U. Staudt, Mikael Afzelius, Pascal Baldi, Didier Jaccard, Wolfgang Tittel, 1 and Nicolas Gisin Group of Applied Physics, University of Geneva, CH-1211 Geneva 4, Switzerland Laboratoire de Physique de la Matière Condensée, Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 2, France Départment de Physique de(More)
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