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Mesoscopic entanglement of noninteracting qubits using collective spontaneous emission

D. Kielpinski
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Abstract

We describe an experimentally straightforward method for preparing an entangled W state of up to 100 qubits. Our repeat-until-success protocol relies on detection of single photons from collective spontaneous emission in free space. Our method allows entanglement preparation in a wide range of qubit implementations that lack entangling qubit-qubit interactions. We give detailed numerical examples for entanglement of neutral atoms in optical lattices and of nitrogen-vacancy centres in diamond. The simplicity of our method should enable preparation of mesoscopic entangled states in a number of physical systems in the near future.

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D. Kielpinski. 2007-06-28. Mesoscopic entanglement of noninteracting qubits using collective spontaneous emission. https://doi.org/10.1088/1367-2630%2F9%2F11%2F408

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