Superconducting-Semiconductor Quantum Devices: From Qubits to Particle Detectors
Superconducting-Semiconductor Quantum Devices: From Qubits to Particle Detectors
复制标题
超导半导体量子器件：从量子位到粒子探测器
DOI：
10.1109/jstqe.2014.2358208
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发表时间：
2014
影响因子：
4.9
通讯作者：
C. Tahan
中科院分区：
文献类型：
--
作者：
Y. Shim;C. Tahan
最近在材料生长和制造技术方面的改进可能最终允许超导半导体实现其潜力。在这里，我们基于最近的一项提议来构建超导设备，如导线、约瑟夫森结和单晶硅或锗内部和外部的量子比特。使用原子制造技术，如扫描隧道显微镜氢光刻，可以在单晶内构建重掺杂超导区。我们描述了基本超导元件-一维导线和隧道约瑟夫森结-的特征参数，并估计了掺硼硅的值。这些器件的外延性、单晶性，再加上器件设计的极大灵活性，精确到单原子尺度，可能会降低噪声或实现新类型的器件和物理。我们考虑了这类超硅器件的应用，表明最先进的跨量子比特和备受追捧的相移量子比特都可以实现。后一种量子比特利用了这些材料天然的高运动电感。在此基础上，我们探索了基于动力学电感的粒子探测器(例如，光子或声子)在天文学或纳米力学中的潜在应用。我们讨论了不需要原子制造方法并可以在今天实现的超半绝缘器件(如硅、锗或钻石)。
Recent improvements in materials growth and fabrication techniques may finally allow for superconducting semiconductors to realize their potential. Here, we build on a recent proposal to construct superconducting devices such as wires, Josephson junctions, and qubits inside and out-of single crystal silicon or germanium. Using atomistic fabrication techniques such as STM hydrogen lithography, heavily doped superconducting regions within a single crystal could be constructed. We describe the characteristic parameters of basic superconducting elements-a 1-D wire and a tunneling Josephson junction-and estimate the values for boron-doped silicon. The epitaxial, single-crystal nature of these devices, along with the extreme flexibility in device design down to the single-atom scale, may enable lower noise or new types of devices and physics. We consider applications for such supersilicon devices, showing that the state-of-the-art transmon qubit and the sought-after phase-slip qubit can both be realized. The latter qubit leverages the natural high kinetic inductance of these materials. Building on this, we explore how kinetic inductance-based particle detectors (e.g., photon or phonon) could be realized with potential application in astronomy or nanomechanics. We discuss supersemi devices (such as in silicon, germanium, or diamond) which would not require atomistic fabrication approaches and could be realized today.