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Superconducting magnetic flux excitation switch based on SQUID array, and preparation method thereof

A superconducting magnetic array technology, applied in the field of communication, can solve the problems of weak signal readout and phase shift of unfavorable TES array

Pending Publication Date: 2021-01-29
NAT INST OF METROLOGY CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional superconducting magnetic flux excitation switch is prone to phase shift, which is not conducive to the readout of the weak signal of the TES array

Method used

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  • Superconducting magnetic flux excitation switch based on SQUID array, and preparation method thereof
  • Superconducting magnetic flux excitation switch based on SQUID array, and preparation method thereof
  • Superconducting magnetic flux excitation switch based on SQUID array, and preparation method thereof

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Embodiment Construction

[0040] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0041]Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0042] It will be understood that when an element or layer is referred to as being "on," "adjacent," "conn...

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Abstract

The invention relates to a superconducting magnetic flux excitation switch based on an SQUID array, and a preparation method thereof. The first superconducting thin film structure of each first Josephson junction structure is arranged at the first end of a loop structure. The first superconducting thin film structure of each second Josephson junction structure is arranged at the second end of theloop structure. The loop structure is an unclosed loop having a first end and a second end. The first superconducting thin film structure of the first Josephson junction structure is connected with the first superconducting thin film structure of the second Josephson junction structure through the loop structure, so that a series inductance structure is formed in the SQUID loop. Therefore, when amagnetic flux is obtained, the change of the SQUID loop is an integral multiple of the magnetic flux quantum phi 0, and no change is caused to the V phi 0 curve (the period is phi 0), so that the phase offset of the SQUID loop can be effectively avoided, and the phase offset problem caused by a parallel inductance structure is solved.

Description

technical field [0001] The present application relates to the technical field of communication, in particular to a SQUID array-based superconducting magnetic flux excitation switch and a preparation method thereof. Background technique [0002] Superconducting quantum interferometer (SQUID) current sensors are widely used in photon metrology, cosmic astronomy, high-energy physics, quantum information and other fields. The high-performance TES detector has high sensitivity, but the noise level is very low, and the output signal is weak. The signal readout needs to use a SQUID current sensor with high current sensitivity and noise level matching. The SQUID current sensor is required for signal readout of all TES detectors of different types and different wavelength bands. Moreover, the SQUID current sensor has become the only means of signal readout of the TES detector. [0003] For the weak signal readout of the TES array, readout technologies such as time-division multiple...

Claims

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Application Information

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IPC IPC(8): H01L39/16H01L39/22H01L39/24H01L27/02
CPCH01L27/0207H10N60/30H10N60/12H10N60/0912
Inventor 王仕建徐达王雪深李劲劲
Owner NAT INST OF METROLOGY CHINA
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