On-chip reflection type quantum amplifier with nonreciprocity

A non-reciprocal, amplifier technology, applied in the field of quantum computing, can solve the problems of large-scale heat loss, unfavorable large-scale development of superconducting quantum computers, and input signal distortion, and achieve low dissipation, which is conducive to large-scale development, small size effect

Pending Publication Date: 2021-08-06
TSINGHUA UNIV
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  • Abstract
  • Description
  • 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 reflection type quantum amplifier with nonreciprocity
  • On-chip reflection type quantum amplifier with nonreciprocity
  • On-chip reflection type quantum amplifier with nonreciprocity

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Embodiment Construction

[0027] 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.

[0028] The quantum reflective amplifier with non-reciprocity in the embodiment of the present application (herein may be referred to as an on-chip quantum amplifier for short) includes: more than one circulator and more than one reflective quantum amplifier integrated on one chip; wherein,

[0029] The circulator is a multi-port on-chip superconducting circulator, wherein, one input port is used to input quantum information or is connected to the output port of the adjacent circulator; one output port is used to connect to the input port of the adjacent circulator or Output the amplified qu...

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Abstract

The invention discloses an on-chip reflection type quantum amplifier with nonreciprocity, and the quantum amplifier provided by the embodiment of the invention is a two-port on-chip device with an isolation function and an amplification function, is small in size and low in dissipation, and has nonreciprocity. According to the quantum amplifier provided by the embodiment of the invention, the input signal and the output signal are isolated, and the interference of signal reflection on the quantum chip is prevented. The quantum amplifier provided by the embodiment of the invention can be integrated with a superconducting circuit, plays an important role in high-fidelity measurement of quantum bits of a large-scale superconducting quantum computer, and is very beneficial to large-scale development of the superconducting quantum computer.

Description

technical field [0001] This application relates to but is not limited to the technical field of quantum computing, especially an on-chip reflective quantum amplifier with non-reciprocity. 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 will be reduced,...

Claims

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Application Information

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IPC IPC(8): H03F1/42H03F7/00
CPCH03F1/42H03F7/00
Inventor 黄汝田耿霄何永成戴根婷何楷泳赵昌昊刘建设陈炜
Owner TSINGHUA UNIV
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