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Generation of multicomponent atomic Schrödinger cat states of up to 20 qubits

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Science  09 Aug 2019:
Vol. 365, Issue 6453, pp. 574-577
DOI: 10.1126/science.aay0600

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Entanglement goes large

The success of quantum computing relies on the ability to entangle large-scale systems. Various platforms are being pursued, with architectures based on superconducting qubits and trapped atoms being the most advanced. By entangling up to 20 qubits, Omran et al. and Song et al.—working with Rydberg atom qubits and superconducting qubits, respectively—demonstrate how far these platforms have reached. The demonstrated controllable generation and detection of entanglement on such quantum systems is promising for the development of large-scale quantum processors.

Science, this issue p. 570, p. 574

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