2017/11/30 by Francesco Tacchino, F. Tacchino, A. Chiesa +7
Computer Science · Engineering · Physics and Astronomy · #Anharmonicity #Computer science #Coupling (piping) #Electrical engineering #Engineering #Mechanical and Optical Resonators #Open quantum system #Physics #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum mechanics #Quantum simulator #Quantum technology #Qubit #Scalability #Topology (electrical circuits) #quant-ph
paper · pdf · doi:10.1103/physrevb.97.214302
published as Phys. Rev. B 97, 214302 (2018) · 14 pages, 8 figures
arxiv created 2018/05/10 · openalex publication_date 2018/06/11 · arxiv updated 2018/06/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Digital quantum simulators are among the most appealing applications of a quantum computer. Here we propose a universal, scalable, and integrated quantum computing platform based on tunable nonlinear electromechanical nano-oscillators. It is shown that very high operational fidelities for single- and two-qubits gates can be achieved in a minimal architecture, where qubits are encoded in the anharmonic vibrational modes of mechanical nanoresonators, whose effective coupling is mediated by virtual fluctuations of an intermediate superconducting artificial atom. An effective scheme to induce large single-phonon nonlinearities in nanoelectromechanical devices is explicitly discussed, thus opening the route to experimental investigation in this direction. Finally, we explicitly show the very high fidelities that can be reached for the digital quantum simulation of model Hamiltonians, by using realistic experimental parameters in state-of-the-art devices, and considering the transverse field Ising model as a paradigmatic example.