Entanglement is a fundamental property of quantum mechanics and emerges as a unique and essential computational resource for achieving a quantum advantage over classical computation. However, generating, verifying and preserving highly entangled states across many qubits presents significant engineering and technical challenges. This problem is central to challenging our understanding of entangled states and their role in quantum information processing, and signifies that characterizing multi-qubit entanglement can act as an important benchmark for assessing the capabilities of emerging quantum technologies. Here we review the generation and preservation of bipartite and the stronger genuine-multipartite forms of multi-qubit entanglement on IBM Quantum devices. Our results to date verified the presence of bipartite entanglement in 65-qubit graph states [1, 2] and genuine-multipartite entanglement in 27-qubit Greenberger-Horne-Zeilinger (GHZ) states respectively [3].
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