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arXiv · 1409.3068

Three megahertz photon collection rate from an NV center with millisecond spin coherence

Luozhou Li·Edward H. Chen·Jiabao Zheng·Sara L. Mouradian·Florian Dolde·Tim Schröder·Sinan Karaveli·Matthew L. Markham·Daniel J. Twitchen·Dirk Englund
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Abstract

Efficient collection of the broadband fluorescence of the diamond nitrogen vacancy center is essential for a range of applications in sensing, on-demand single photon generation, and quantum information processing. Here, we introduce a circular `bullseye' diamond grating enabling a collected photon rate of $(3.0\pm0.1)\times10^6$ counts per second from a single nitrogen-vacancy center with a spin coherence time of 1.7$\pm$0.1 ms. Back-focal-plane studies indicate efficient redistribution into low-NA modes.

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Luozhou Li, Edward H. Chen, Jiabao Zheng, Sara L. Mouradian, Florian Dolde, Tim Schröder, Sinan Karaveli, Matthew L. Markham, Daniel J. Twitchen, Dirk Englund. 2014-09-10. Three megahertz photon collection rate from an NV center with millisecond spin coherence. https://doi.org/10.1021/nl503451j

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