Low-temperature reading method of multi-channel superconducting nanowire single-photon detector

A single-photon detector and superconducting nanowire technology, which is applied in the direction of using electric radiation detectors for photometry and measurement circuits, can solve the problem of multi-channel detectors with many output ports, weak anti-interference ability, weak detection signals, etc. problem, to achieve the effect of avoiding environmental noise, strong anti-magnetic and simple structure

Active Publication Date: 2019-05-17
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This patented technology uses an ultra conductive material called nano wire (NW), which works well with small detectors that are very sensitive but cannot operate below certain levels for long periods without losing their effectiveness or causing damage during use. By enhancing this property, these sensers become more effective when used under lower temperatures than previous designs due to less wasted space on board.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance and efficiency of electronic devices that use quantum dots for data storage or processing purposes. These improvements require accurate measurements with minimal environmental impacts while also being able to operate without interferring signals caused by thermal fluctuations during normal operations.

Method used

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  • Low-temperature reading method of multi-channel superconducting nanowire single-photon detector

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Embodiment

[0023] Example: The multi-channel superconducting nanowire single-photon detector and superconducting nanowire encoder are loaded in a 1.5K refrigerator, and the installation process of the circuit is introduced. Such as figure 1 As shown, at first, the multi-channel superconducting nanowire single photon detector (this embodiment takes seven as an example) and three superconducting nanowire encoders are connected at low temperature, and according to figure 1 The connection methods shown in are coupled to each other. At low temperature, the superconducting nanowire encoder encodes the detection signal of each superconducting nanowire single photon detector and performs signal amplification once to convert the original signal into three encoded signals. Secondly, the three superconducting nanowire encoders are output to room temperature through the SMA interface and the coaxial line, and then the output signals of the three channels are amplified again through three amplifiers...

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Abstract

The invention discloses a low-temperature reading method of a multi-channel superconducting nanowire single-photon detector or detector array. The method involves a superconducting nanowire single-photon detector, a superconducting nanowire encoder composed of a multi-gating end superconducting nanowire three-terminal logic devices, a coaxial line of an external detection instrument, and a radio-frequency amplification loop; an output signal of the superconducting nanowire encoder is transmitted to a room temperature environment from a low-temperature working area through the coaxial line; andthe superconducting nanowire encoder is provided with (2N-1) input ends and N output ends. The method eliminates the limitations of weak detection signal of the superconducting nanowire single-photondetector, excessive output ports of a multi-channel detector or detector array, poor anti-interference capability and high noise of a traditional room temperature reading mode, and effectively improves the working stability of the detector.

Description

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Claims

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Application Information

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Owner NANJING UNIV
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