Cross-entangling electronic and nuclear spins of distant nitrogen-vacancy centers in noisy environments by means of quantum microwave radiation
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2018-08-07 |
| Journal | Physical review. B./Physical review. B |
| Authors | Angela Gomez, F. J. RodrĂguez, Luis Quiroga |
| Institutions | Universidad de Los Andes |
| Citations | 3 |
Abstract
Section titled âAbstractâNitrogen-vacancy (NV) defect centers in diamond are strong candidates to\ngenerate entangled states in solid-state environments even at room temperature.\nQuantum correlations in spatially separated NV systems, for distances between\nNVs ranging from a few nanometers to a few kilometers, have been recently\nreported. In the present work we consider the entanglement transfer from two-\nmode microwave squeezed (entangled) photons, which are in resonance with the\ntwo lowest NV electron spin states, to initially unentangled NV centers. We\nfirst demonstrate that the entanglement transfer process from quantum\nmicrowaves to isolated NV electron spins is feasible. We then proceed to extend\nthe previous results to more realistic scenarios where 13 C nuclear spin baths\nsurrounding each NV are included, quantifying the entanglement transfer\nefficiency and robustness under the effects of dephasing/dissipation noisy\nnuclear baths. Finally, we address the issue of assessing the possibility of\nentanglement transfer from the squeezed microwave light to two remote nuclear\nspins closely linked to different NV centers.\n