Title :
Recent progress in diamond photonics
Author :
Karle, Timothy J. ; Tomljenovic-Hanic, Snjezana ; Gibson, Brant C. ; Greentree, Andrew D. ; Lau, Desmond ; Simpson, David ; Stacey, Alastair ; Ganesan, Kumaravelu ; Hoffman, Alon ; Acosta, Victor ; Huang, Zhihong ; Santoro, Corrado ; Beausoleil, Ray G. ;
Author_Institution :
Sch. of Phys., Univ. of Melbourne, Melbourne, VIC, Australia
Abstract :
We detail the passivation of ultra-high purity diamond and subsequent homoepitaxial growth of thin diamond layers containing spectrally stable nitrogen vacancy (NV) centres. We demonstrate a reduction of three orders of magnitude in the density of fluorescent NV centres in single crystal diamond due to hydrogen plasma treatment. This reduced fluorescence extends to a depth of 80 μm below the diamond surface and provides a clean slate upon which subsequent growth and characterisation of high quality isolated NV centres is possible. The photoluminescence excitation linewidth of NV centres in a 100 nm thick layer are measured to be as low as 140 MHz at T <; 12 K, with favourable spin properties. The combination of these two methods is an important step toward scalable and practical diamond based photonic devices suitable for quantum information processing.
Keywords :
diamond; elemental semiconductors; epitaxial growth; fluorescence; passivation; photoluminescence; photonic band gap; plasma CVD; semiconductor epitaxial layers; vacancies (crystal); C; NV centre density; clean slate; depth 80 mum; diamond photonics; fluorescence; frequency 140 MHz; homoepitaxial growth; hydrogen plasma treatment; isolated NV centres; magnitude order reduction; passivation; photoluminescence excitation linewidth; quantum information processing; single crystal diamond; size 100 nm; spectrally stable nitrogen vacancy centres; spin properties; thin diamond layers; ultra-high purity diamond; Diamond-like carbon; Fluorescence; Hydrogen; Nitrogen; Passivation; Plasmas; diamond; diffusion; fluorescence; growth; hydrogen; passivation;
Conference_Titel :
Transparent Optical Networks (ICTON), 2012 14th International Conference on
Conference_Location :
Coventry
Print_ISBN :
978-1-4673-2228-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2012.6253949