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Mapping multiple photonic qubits into and out of one solid-state atomic ensemble

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Published in Nature Communications. 2010, p. 1-7
Abstract The future challenge of quantum communication is scalable quantum networks, which require coherent and reversible mapping of photonic qubits onto atomic systems (quantum memories). A crucial requirement for realistic networks is the ability to effi ciently store multiple qubits in one quantum memory. In this study, we show a coherent and reversible mapping of 64 optical modes at the single-photon level in the time domain onto one solid-state ensemble of rare-earth ions. Our light – matter interface is based on a high-bandwidth (100 MHz) atomic frequency comb, with a predetermined storage time of >~ 1 μs. We can then encode many qubits in short ( < 10 ns) temporal modes (time-bin qubits). We show the good coherence of mapping by simultaneously storing and analysing multiple time-bin qubits.
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USMANI, Imam et al. Mapping multiple photonic qubits into and out of one solid-state atomic ensemble. In: Nature Communications, 2010, p. 1-7. https://archive-ouverte.unige.ch/unige:11762

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Deposited on : 2010-09-03

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