论文标题
钻石中的电信O波段发射器
A telecom O-band emitter in diamond
论文作者
论文摘要
钻石的彩色中心是量子技术的有前途的平台。到目前为止，大多数钻石中的彩色中心都在可见的或近红外的波长范围内发现，这与长距离纤维通信不兼容，并且不利于生物组织中的成像。在这里，我们报告了对电信O波段中排放的新颜色中心的实验性观察，我们在硅掺杂的散装单晶钻石和微钻石中观察到。结合吸收和光致发光测量值，我们在1221 nm处确定了零子线和由42 MeV隔开的声子复制品。使用瞬态吸收光谱法，我们测量激发态寿命约为270 ps，并观察到长寿命的基线，这可能是从间间穿越到另一个自旋歧管的长期基线。
Color centers in diamond are promising platforms for quantum technologies. Most color centers in diamond discovered thus far emit in the visible or near-infrared wavelength range, which are incompatible with long-distance fiber communication and unfavorable for imaging in biological tissues. Here, we report the experimental observation of a new color center that emits in the telecom O-band, which we observe in silicon-doped bulk single crystal diamonds and microdiamonds. Combining absorption and photoluminescence measurements, we identify a zero-phonon line at 1221 nm and phonon replicas separated by 42 meV. Using transient absorption spectroscopy, we measure an excited state lifetime of around 270 ps and observe a long-lived baseline that may arise from intersystem crossing to another spin manifold.
