Einstein-Podolsky-Rosen entanglement between separated atomic ensembles
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-07-29 |
| Journal | Physical review. A/Physical review, A |
| Authors | Wei Zhang, MingāXin Dong, Dong-Sheng Ding, Shuai Shi, Kai Wang |
| Institutions | CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China |
| Citations | 7 |
Abstract
Section titled āAbstractāThe Einstein-Podolsky-Rosen (EPR) entanglement is of special importance not only for fundamental research in quantum mechanics, but also for quantum information processing. Establishing EPR entanglement between two memory systems, such as atomic ensembles, nitrogen-vacancy centers, and rare-earth-ion-doped solids is promising for realizing spatial-multimode based quantum communication, quantum computation, and quantum imaging. To date, there have been few reports on realizing EPR entanglement between physical systems in true position and momentum. Here we describe successfully establishing such entanglement between two separated atomic ensembles by using quantum storage. We clearly prove the existence of EPR entanglement in position and momentum between two memories by demonstrating the satisfying of the inseparability criterion with the aid of quantum ghost-imaging and ghost-interference experiments.