Parity-preserving and magnetic field–resilient superconductivity in InSb nanowires with Sn shells

doi:10.1126/science.aba5211

GSTDTAP > 气候变化

DOI	10.1126/science.aba5211
	Parity-preserving and magnetic field–resilient superconductivity in InSb nanowires with Sn shells
	M. Pendharkar; B. Zhang; H. Wu; A. Zarassi; P. Zhang; C. P. Dempsey; J. S. Lee; S. D. Harrington; G. Badawy; S. Gazibegovic; R. L. M. Op het Veld; M. Rossi; J. Jung; A.-H. Chen; M. A. Verheijen; M. Hocevar; E. P. A. M. Bakkers; C. J. Palmstrøm; S. M. Frolov
	2021-04-30
发表期刊	Science
出版年	2021
英文摘要	Some of the most promising schemes for quantum information processing involve superconductors. In addition to the established superconducting qubits, topological qubits may one day be realized in semiconductor-superconductor heterostructures. The superconductor most widely used in this context is aluminum, in which processes that cause decoherence are suppressed. Pendharkar et al. go beyond this paradigm to show that superconducting tin can be used in place of aluminum (see the Perspective by Fatemi and Devoret). The authors grew nanowires of indium antimonide, which is a semiconductor, and coated them with a thin layer of tin without using cumbersome epitaxial growth techniques. This process creates a well-defined, “hard” superconducting gap in the nanowires, which is a prerequisite for using them as the basis for a potential topological qubit. Science , this issue p. [508][1]; see also p. [464][2] Improving materials used to make qubits is crucial to further progress in quantum information processing. Of particular interest are semiconductor-superconductor heterostructures that are expected to form the basis of topological quantum computing. We grew semiconductor indium antimonide nanowires that were coated with shells of tin of uniform thickness. No interdiffusion was observed at the interface between Sn and InSb. Tunnel junctions were prepared by in situ shadowing. Despite the lack of lattice matching between Sn and InSb, a 15-nanometer-thick shell of tin was found to induce a hard superconducting gap, with superconductivity persisting in magnetic field up to 4 teslas. A small island of Sn-InSb exhibits the two-electron charging effect. These findings suggest a less restrictive approach to fabricating superconducting and topological quantum circuits. [1]: /lookup/doi/10.1126/science.aba5211 [2]: /lookup/doi/10.1126/science.abd8556
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/325039
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	M. Pendharkar,B. Zhang,H. Wu,等. Parity-preserving and magnetic field–resilient superconductivity in InSb nanowires with Sn shells[J]. Science,2021.
APA	M. Pendharkar.,B. Zhang.,H. Wu.,A. Zarassi.,P. Zhang.,...&S. M. Frolov.(2021).Parity-preserving and magnetic field–resilient superconductivity in InSb nanowires with Sn shells.Science.
MLA	M. Pendharkar,et al."Parity-preserving and magnetic field–resilient superconductivity in InSb nanowires with Sn shells".Science (2021).