Low-temperature superconductive reading circuit based on ERSFQ and reading system

Abstract

The present invention provides a low-temperature superconductive reading circuit based on the ERSFQ (Energy-efficient Rapid Single Flux Quantum) and a reading system. The circuit comprises: m superconduction quantum interference devices connected with a low-temperature superconductive sensor array and configured to convert the multi-output signals of the low-temperature superconductive sensor array to multiple SFQ pulse signals; an ERSFQ circuit connected with the m superconduction quantum interference devices and configured to convert the multiple SFQ pulse signals into the binary system one-way pulse signals for outputting; and a driving amplification circuit connected with the ERSFQ circuit and configured to perform amplification output of the binary system one-way pulse signals, wherein m is an integer of larger than 1. The low-temperature superconductive reading circuit based on ERSFQ and the reading system solve the problems that the reading amplification circuit is large in heat load and the circuit system anti-noise interference capability is bad in the prior art.

Description

technical field [0001] The invention belongs to the technical field of superconducting circuit design, in particular to a low-temperature superconducting readout circuit and a readout system based on an ERSFQ circuit. Background technique [0002] Low-temperature superconducting sensors have shown extremely high application value in the fields of quantum information, quantum optics, and astronomical detection due to their superior performance such as high detection efficiency and high energy resolution. With the development of low-temperature superconducting sensor research, the research and application of detectors are becoming more and more extensive. [0003] Since the output signal of the low-temperature superconducting sensor is relatively weak, it needs to be amplified in the low-temperature environment where it works before it can be read out by a traditional semiconductor readout circuit that works at room temperature. At present, the commonly used low-temperature r...

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a low-temperature superconducting readout circuit and a readout system based on an ERSFQ circuit, which is used to solve the problem of the large thermal load of the readout amplifier circuit and the problem of the circuit system in the prior art. The problem of weak anti-noise interference ability

Images