Constraints on a Spin-Dependent Exotic Interaction between Electrons with Single Electron Spin Quantum Sensors
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-08-22 |
| Journal | Physical Review Letters |
| Authors | Xing Rong, Man Jiao, Jianpei Geng, Bo Zhang, Tianyu Xie |
| Institutions | Hefei University of Technology, CAS Key Laboratory of Urban Pollutant Conversion |
| Citations | 33 |
Abstract
Section titled āAbstractāA new laboratory bound on the axial-vector mediated interaction between electron spins at micrometer scale is established with single nitrogen-vacancy (NV) centers in diamond. A single crystal of p-terphenyl doped pentacene-d_{14} under laser pumping provides the source of polarized electron spins. Based on the measurement of polarization signal via nitrogen-vacancy centers, we set a constraint for the exotic electron-electron coupling g_{A}^{e}g_{A}^{e}, within the force range from 10 to 900 Ī¼m. The obtained upper bound of the coupling at 500 Ī¼m is |g_{A}^{e}g_{A}^{e}/4Ļāc|ā¤1.8Ć10^{-19}, which is one order of magnitude more stringent than a previous experiment. Our result shows that the NV center can be a promising platform for searching for new particles predicted by theories beyond the standard model.