Efficient Photon Collection from a Nitrogen Vacancy Center in a Circular Bullseye Grating
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-02-25 |
| Journal | Nano Letters |
| Authors | Luozhou Li, Edward H. Chen, Jiabao Zheng, Sara Mouradian, Florian Dolde |
| Institutions | Columbia University, Element Six (United States) |
| Citations | 206 |
Abstract
Section titled āAbstractāEfficient collection of the broadband fluorescence from the diamond nitrogen vacancy (NV) center is essential for a range of applications in sensing, on-demand single photon generation, and quantum information processing. Here, we introduce a circular ābullseyeā diamond grating which enables a collected photon rate of (2.7 Ā± 0.09) Ć 10(6) counts per second from a single NV with a spin coherence time of 1.7 Ā± 0.1 ms. Back-focal-plane studies indicate efficient redistribution of the NV photoluminescence into low-NA modes by the bullseye grating.