Zhao Hong-Quan, Fujiwara Masazumi, Okano Masayuki, Takeuchi Shigeki
Opt Express. 2013 Dec 2;21(24):29679-86. doi: 10.1364/OE.21.029679.
Photoluminescence (PL) spectra of single nitrogen vacancy (NV) centers in 50-nm diamond nanocrystals at the zero-phonon line (ZPL) were directly observed using a Fabry-Perot interferometer at cryogenic temperatures. The narrowest linewidth of ZPL was 1.2 GHz (1.9 ± 0.7 GHz on average), comparable to ZPL linewidths in PL spectra reported for NV centers in pure bulk diamond. This observation is important to the application of NV centers for use in quantum communication and computation devices, and in nano-sensing.
在低温下，使用法布里 - 珀罗干涉仪直接观测了50纳米金刚石纳米晶体中单个氮空位（NV）中心在零声子线（ZPL）处的光致发光（PL）光谱。ZPL的最窄线宽为1.2吉赫兹（平均为1.9±0.7吉赫兹），与报道的纯块状金刚石中NV中心PL光谱的ZPL线宽相当。这一观测结果对于NV中心在量子通信和计算设备以及纳米传感中的应用具有重要意义。
