Nonlinear coupling between a nitrogen-vacancy-center ensemble and a superconducting qubit
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-01-23 |
| Journal | Optics Express |
| Authors | Qiong Chen, Jun Wen, Wanli Yang, Mang Feng, Jiangfeng Du |
| Institutions | University of Science and Technology of China, Hunan Normal University |
| Citations | 2 |
Abstract
Section titled āAbstractāBy exchange of virtual microwave photon induced by a transmission line resonator, the nonlinear interaction between a nitrogen-vacancy-center ensemble (NVE) and a superconducting charge qubit is achieved in circuit quantum electrodynamics, where the nonlinear coupling results from the second order of the coupling between the magnetic field of the transmission line resonator and the charge qubit. In our case, the nonlinear coupling can be much enhanced by a factor of the total spin number in the NVE. As an application, we present a potentially practical scheme to realize the squeezing of the NVE using the nonlinear coupling, which is within reach of the currently available technology.