期刊
NANO LETTERS
卷 14, 期 10, 页码 5748-5753出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl502629x
关键词
Superconductor; digital; logic; amplifier; cryotron; photon
类别
资金
- National Science Foundation (NSF) [1128222]
- NSF iQuISE program [0801525]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1128222] Funding Source: National Science Foundation
Superconducting electronics based on Josephson junctions are used to sense and process electronic signals with minimal loss; however, they are ultrasensitive to magnetic fields, limited in their amplification capabilities, and difficult to manufacture. We have developed a 3-terminal, nanowire-based superconducting electrothermal device which has no Josephson junctions. This device, which we call the nanocryotron, can be patterned from a single thin film of superconducting material with conventional electron-beam lithography. The nanocryotron has a demonstrated gain of >20, can drive impedances of 100 kO, and operates in typical ambient magnetic fields. We have additionally applied it both as a digital logic element in a half-adder circuit, and as a digital amplifier for superconducting nanowire single-photon detectors pulses. The nanocryotron has immediate applications in classical and quantum communications, photon sensing, and astronomy, and its input characteristics are suitable for integration with existing superconducting technologies.
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