Preparation method and structure of series superconducting quantum interference device array based on superconducting bridge junction

A technology of superconducting quantum interference and array structure, which is applied in the field of preparation of series superconducting quantum interferometer arrays based on superconducting bridge junctions, which can solve the problems of complex manufacturing process, low current density of Josephson junction, and large parasitic capacitance

Pending Publication Date: 2020-10-30
NAT INST OF METROLOGY CHINA
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Problems solved by technology

At this time, the traditional superconducting quantum interferometer preparation method and superconducting quantum interferometer have low current density, large parasitic capacitance, and complicated manufacturing process of the Josephson junction.

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  • Preparation method and structure of series superconducting quantum interference device array based on superconducting bridge junction
  • Preparation method and structure of series superconducting quantum interference device array based on superconducting bridge junction
  • Preparation method and structure of series superconducting quantum interference device array based on superconducting bridge junction

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Embodiment Construction

[0046]In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0047] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom",...

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Abstract

The invention provides a preparation method and structure of a series superconducting quantum interference device array based on a superconducting bridge junction. The series superconducting quantum interference device array structure based on the superconducting bridge junction has a nano-bridge structure, and a plurality of SQUID arrays connected in series are formed. Therefore, the structure has the characteristics of high junction current density and small parasitic capacitance. Through the series superconducting quantum interference device array structure with nanojunctions, the structurecan be reduced to the nanoscale, and the ability to resist external magnetic field interference is higher. Through the series SQUID array, the whole system of the series superconducting quantum interference device array structure based on the superconducting bridge junction has a larger bandwidth, the impedance matching problem is avoided, and the working frequency range is greatly increased. Therefore, the prepared series superconducting quantum interference device array structure based on the superconducting bridge junction has stronger anti-interference capability, higher bandwidth and better output signal-to-noise ratio.

Description

technical field [0001] The present application relates to the technical field of electronic devices, in particular to a preparation method and structure of a serial superconducting quantum interference device array based on superconducting bridge junctions. Background technique [0002] Superconducting Quantum Interference Device (SQUID) is currently the most sensitive flux-voltage sensor, which can precisely measure magnetic field (gradient), current, voltage, displacement and other physical quantities that can be converted into magnetic flux through self-inductance and mutual inductance. It has a wide range of applications in precision measurement, aerospace, geophysics, ocean exploration, biology and medicine. [0003] The traditional superconducting quantum interferometer preparation method and the superconducting quantum interferometer are formed by using a parallel Josephson structure, and the Josephson junction adopts a three-layer structure of superconductor-ultra-th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L39/24B82Y40/00H01L39/02H01L39/22
CPCB82Y40/00H10N60/805H10N60/12H10N60/0912
Inventor 钟青王雪深李劲劲钟源徐骁龙曹文会
Owner NAT INST OF METROLOGY CHINA
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