Entanglement of two nitrogen-vacancy ensembles via a nanotube
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-02-10 |
| Journal | Physical review. A/Physical review, A |
| Authors | Yonghong Ma, Quanzhen Ding, E Wu |
| Institutions | Stevens Institute of Technology, Inner Mongolia University of Science and Technology |
| Citations | 11 |
Abstract
Section titled āAbstractāAs an essential quantum resource in quantum information processing, entanglement between macroscopic systems has been applied to both quantum technologies and foundational studies of the boundary between the quantum and classical worlds. Inspired by the proposal by Li et al. [Phys. Rev. Lett. 117, 015502 (2016)], we propose a scheme that is composed of two separated nitrogen-vacancy centers coupled to the vibration mode of a nanotube for creating entanglement between the two ensembles. An approximate analytical solution related to the calculation of macroscopic entanglement for this two-spin-ensemble model is derived. This kind of analytical solution will be crucial for directly testing the contribution of the experimental parameters, especially for the calculation of macroscopic entanglement in follow-up work. Including the dephasing and mechanical dissipation, we show that two spin ensembles are entangled with time evolution under realistic experimental conditions. This macroscopic entanglement is applicable for applied ideas related to quantum computation and communication, as well as the studies of the boundary between quantum and classical worlds. Moreover, we describe how to realize this practical model and demonstrate this macroscopic entanglement in experiments.