Acousto-electric single-photon detector
Acousto-electric single-photon detector
复制标题
声电单光子探测器
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
J. Rarity
中科院分区：
文献类型：
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作者：
P. Batista;M. Gustafsson;M. M. de Lima;M. Beck;V. I. Talyanskii;R. Hey;P. Santos;M. Delsing;J. Rarity
我们提出了一种新的概念，基于单光子探测器的量子信息处理，这是能够区分光子数的光脉冲。检测器利用表面声波（SAW）的电荷传输，以便将大的光子吸收区域（因此提供高的光子收集效率）与微观电荷检测区域联合收割机结合，其中使用单电子晶体管（SET）以单电子水平的分辨率检测光生电荷。我们目前的初步结果测量的探测器的原型中的声传输，以及在制造的射频单电子晶体管（RFSETs）的电荷检测。光子探测器是声电纳米电路的一个特殊例子，预计能够控制单个电子的空间和自旋自由度。如果实现，这些电路将大大有助于可扩展的量子信息技术。
We propose a novel concept for a semiconductor-based single-photon detector for quantum information processing, which is capable of discriminating the number of photons in a light pulse. The detector exploits the charge transport by a surface acoustic wave (SAW) in order to combine a large photon absorption area (thus providing high photon collection efficiency) with a microscopic charge detection area, where the photo generated charge is detected with resolution at the single electron level using single electron transistors (SETs). We present preliminary results on acoustic transport measured in a prototype for the detector as well as on the fabrication of radio-frequency single-electron transistors (RFSETs) for charge detection. The photon detector is a particular example of acousto-electric nanocircuits that are expected to be able to control both the spatial and the spin degrees of freedom of single electrons. If realized, these circuits will contribute substantially to a scalable quantum information technology.