Entanglement is an important evidence that a quantum device can potentially solve problems intractable for classical computers. In this paper, we prepare connected graph states involving 8 to 16 qubits on ibmqx5, a 16-qubit superconducting quantum processor accessible via IBM cloud,using low-depth circuits. We demonstrate that the prepared state is fully entangled, i.e. the state is inseparable with respect to any fixed partition.
@article{arxiv.1801.03782,
title = {16-qubit IBM universal quantum computer can be fully entangled},
author = {Yuanhao Wang and Ying Li and Zhang-qi Yin and Bei Zeng},
journal= {arXiv preprint arXiv:1801.03782},
year = {2018}
}
Comments
23 pages, 9 figures, 2 tables; The full entanglement is clarified; a new section is added on the localized entanglement with distance 3 and 4, accepted version