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On-chip non-reflective quantum amplifier with strong isolation function

An amplifier, non-reflective technology, applied in the field of quantum computing, can solve the problems of large heat loss, unfavorable large-scale development of superconducting quantum computers, input signal distortion, etc. Effect

Pending Publication Date: 2021-08-03
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In related technologies, on the one hand, isolators, circulators, and quantum amplifiers are all independent devices, which are bulky and have serious heat loss, which is not conducive to the large-scale development of superconducting quantum computers; on the other hand, the quantum amplifier gain-bandwidth product (GBP, Gain-Bandwith Product) is smaller, that is to say, for the same quantum amplifier, GBP is determined. If a larger gain is required, it can only work in a narrower bandwidth range. If you want to work in a wider Working within the bandwidth range, the gain will be reduced, otherwise it will cause distortion of the amplified input signal

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  • On-chip non-reflective quantum amplifier with strong isolation function
  • On-chip non-reflective quantum amplifier with strong isolation function
  • On-chip non-reflective quantum amplifier with strong isolation function

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Embodiment Construction

[0041] In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0042] figure 1 It is a schematic diagram of the composition and structure of an on-chip non-reflective quantum amplifier (which may be referred to as an on-chip quantum amplifier for short) with a strong isolation function in the embodiment of the present application, such as figure 1 As shown, the on-chip quantum amplifier in the embodiment of the present application includes: more than one circulator, more than two isolators, and more than one non-reflective quantum amplifier integrated on a chip; wherein,

[0043] The circulator is a multi-port on-chip superconducting circulator ( fig...

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Abstract

The invention discloses an on-chip non-reflective quantum amplifier with a strong isolation function. The on-chip quantum amplifier provided by the embodiment of the invention is a two-port on-chip device with a strong isolation function, a circulation function and an amplification function, is small in size and low in dissipation, and has nonreciprocity. According to the on-chip quantum amplifier with the strong isolation function, the gain bandwidth product of the amplifier is increased, the strong isolation function is achieved, meanwhile, an HEMT can be replaced, and the cost of a superconducting quantum computer and the cost of a test system of the superconducting quantum computer are greatly reduced. The on-chip quantum amplifier with the strong isolation function, provided by the embodiment of the invention, can be directly connected with the quantum chip, so that the quantum chip is protected from counteractive interference of a subsequent circuit. Based on the on-chip quantum amplifier provided by the embodiment of the invention, the superconducting quantum test system is simplified, the size of the superconducting quantum test system is remarkably reduced, and large-scale development of superconducting quantum computers is facilitated.

Description

technical field [0001] This application relates to but not limited to the technical field of quantum computing, especially an on-chip non-reflective quantum amplifier with a strong isolation function. Background technique [0002] In the superconducting quantum test system, the transmission of quantum information not only needs to be amplified, but also needs to isolate the reaction of external signals. In related technologies, on the one hand, isolators, circulators, and quantum amplifiers are all independent devices, which are bulky and have serious heat loss, which is not conducive to the large-scale development of superconducting quantum computers; on the other hand, the quantum amplifier gain-bandwidth product (GBP, Gain-Bandwith Product) is smaller, that is to say, for the same quantum amplifier, GBP is determined. If a larger gain is required, it can only work in a narrower bandwidth range. If you want to work in a wider If it works within the bandwidth, the gain wil...

Claims

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Application Information

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IPC IPC(8): H03F19/00G06N10/00
CPCG06N10/00H03F19/00
Inventor 黄汝田何永成何楷泳耿霄余晴戴根婷赵昌昊刘建设陈炜
Owner TSINGHUA UNIV
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