论文标题
电子光束在谐振激发下激活的六角硼硼中激活的发射器的相干性能
Coherence properties of electron beam activated emitters in hexagonal boron nitride under resonant excitation
论文作者
论文摘要
作为量子现象研究和原型量子技术的生产的平台，二维材料越来越流行。 2D材料中的量子发射器可以容纳两个级别的系统，这些系统可以充当量子信息处理的Qubits。在这里，我们表征了在低温温度下，位置控制的量子发射器在硝酸硼中的行为。超过二十个位点，我们观察到〜436 nm的零声子线的超鼻中分布以及强烈的线性极化发射。我们采用共振激发来表征发射线形，并找到光谱扩散和声子扩展有助于在1-2 GHz范围内的线宽。在一系列共振激发能力下观察到狂犬病振荡，并且在1 $μ$ w激发以下，连贯的叠加可保持高达0.90 ns。我们的结果是可用于可伸缩量子技术的HBN中未来使用量子发射器的结果。
Two dimensional materials are becoming increasingly popular as a platform for studies of quantum phenomena and for the production of prototype quantum technologies. Quantum emitters in 2D materials can host two level systems that can act as qubits for quantum information processing. Here, we characterize the behavior of position-controlled quantum emitters in hexagonal boron nitride at cryogenic temperatures. Over two dozen sites, we observe an ultra-narrow distribution of the zero phonon line at ~436 nm, together with strong linearly polarized emission. We employ resonant excitation to characterize the emission lineshape and find spectral diffusion and phonon broadening contribute to linewidths in the range 1-2 GHz. Rabi oscillations are observed at a range of resonant excitation powers, and under 1 $μ$W excitation a coherent superposition is maintained up to 0.90 ns. Our results are promising for future employment of quantum emitters in hBN for scalable quantum technologies.
