Scalable nuclear-spin entanglement mediated by a mechanical oscillator

Article

关键词: QUANTUM GROUND-STATE;    NANOMECHANICAL OSCILLATOR;    COUPLED ELECTRON;    GRAPH STATES;    NV CENTER;    DIAMOND;    COMPUTATION;    RESONATORS;    RESONANCE;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.98.165404

来源: SCIE

【 摘 要 】

We propose a solid-state hybrid platform based on an array of implanted nitrogen-vacancy (NV) centers in diamond magnetically coupled to a mechanical oscillator. The mechanical oscillator and the NV electronic spins both act as a quantum bus and allow us to induce an effective long-range interaction between distant nuclear spins, relaxing the requirements on their spatial distance. The coherent nuclear spin-spin interaction, having the form of an Ising model, can be maintained in the presence of mechanical damping and spin dephasing via a pulsed dynamical decoupling of the nuclear spins in addition to the microwave driving field of the electronic spins. The present hybrid platform provides a scalable way to prepare multipartite entanglement among nuclear spins with long coherence times and can be applied to generate graph states that may be used for universal quantum computing.

【 授权许可】

Free