We implement an embedding quantum simulator (EQS) in nuclear spin systems. The experiment consists of a simulator of up to three qubits, plus a single ancillary qubit, where we are able to efficiently measure the concurrence and the three-tangle of two-qubit and a three-qubit systems as they undergo entangling dynamics. The EQS framework allows us to drastically reduce the number of measurements needed for this task, which otherwise would require full-state reconstruction of the qubit system. Our simulator is built of the nuclear spins of 4 13C atoms in a molecule of trans-crotonic acid manipulated with NMR techniques.
@article{arxiv.1706.00252,
title = {Entanglement Measures in Embedding Quantum Simulators with Nuclear Spins},
author = {Tao Xin and Julen S. Pedernales and Enrique Solano and Gui-Lu Long},
journal= {arXiv preprint arXiv:1706.00252},
year = {2018}
}