2017/04/30 by Tao Xin, Shi-Jie Wei, Julen S. Pedernales +4
Chemistry · Computer Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #Condensed matter physics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum mechanics #Qubit #Spectroscopy and Quantum Chemical Studies #Spins #Unitary state #quant-ph
paper · pdf · doi:10.1103/physreva.96.062303
published as Phys. Rev. A 96, 062303 (2017) · 8 pages, 7 figures, All comments are welcome
openalex publication_date 2017/12/01 · arxiv created 2017/12/17 · arxiv updated 2017/12/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose and experimentally demonstrate an efficient framework for the quantum simulation of quantum channels in nuclear magnetic resonance (NMR). Our approach relies on the suitable decomposition of nonunitary operators in a linear combination of d unitary ones, which can be then experimentally implemented with the assistance of a number of ancillary qubits that grows logarithmically in d. As a proof-of-principle demonstration, we realize the quantum simulation of three quantum channels for a single-qubit: phase damping, amplitude damping, and depolarizing channels. For these paradigmatic cases, we measure key features, such as the fidelity of the initial state and the associated von Neumann entropy for a qubit evolving through these channels. Our experiments are carried out using nuclear spins in a liquid sample and NMR control techniques.