Strongly enhanced photon collection from diamond defect centers under microfabricated integrated solid immersion lenses

被引:218
作者
Hadden, J. P. [1 ]
Harrison, J. P.
Stanley-Clarke, A. C.
Marseglia, L.
Ho, Y. -L. D.
Patton, B. R.
O'Brien, J. L.
Rarity, J. G.
机构
[1] Univ Bristol, Dept Elect & Elect Engn, Ctr Quantum Photon, Bristol BS8 1UB, Avon, England
基金
英国工程与自然科学研究理事会;
关键词
NITROGEN-VACANCY CENTERS; SINGLE PHOTONS; QUANTUM DOTS; ENTANGLEMENT; SPINS;
D O I
10.1063/1.3519847
中图分类号
O59 [应用物理学];
学科分类号
摘要
The efficiency of photon collection from optically active defect centers in bulk diamond is greatly reduced by refraction at the diamond-air interface. We report on the fabrication and measurement of a geometrical solution to the problem; integrated solid immersion lenses (SILs) etched directly into the surface of diamond. An increase of a factor of 10 was observed in the saturated count-rate from a single negatively charged nitrogen-vacancy (NV(-)) within a 5 mu m diameter SIL compared with NV(-)'s under a planar surface in the same crystal. Such a system is potentially scalable and easily adaptable to other defect centers in bulk diamond. (C) 2010 American Institute of Physics. [doi:10.1063/1.3519847]
引用
收藏
页数:3
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