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Solid-State Quantum Memories for Quantum Network

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  • UserImam Usmani (University of Geneva)
  • ClockThursday 16 December 2010, 16:00-17:00
  • HousePhysics East 217.

If you have a question about this talk, please contact Vincent Boyer.

Special seminar

The ability of storing and retrieving quantum states of light is an important experimental challenge in quantum information science. A powerful quantum memory (QM) for light is required in a quantum repeater (QR), which would allow long distance (>500km) quantum ommunication. Moreover, combined with a probabilistic photon pair source, a QM enables the realization of a deterministic single photon source. Finally, in optical quantum computation, a QM enables to synchronize operations on many qubits by storing some of them while others are being processed. For all these applications, the QM must allow on-demand read-out, with high fidelity and efficiency, and a long storage time. Additionally a multimode capacity (for temporal or spatial modes) would allow multiplexing in a QR. Our researches focus on rare-earth ions doped crystals (REIC). I will present theses systems that have interesting properties for a QM and will present what has already been achieved. In particular, in our last experiment, we could demonstrate storage of photonic entanglement in a crystal.

This talk is part of the Cold Atoms series.

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