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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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-B

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[0027] In order to make the purpose, technical solutions and advantages of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the features in the embodiments and embodiments in the present application may be any combination with each other in the case of an unable conflict.

[0028] The quantum reflective amplifier having non-varying embodiments in the present application embodiment (which can be referred to as a sheet) includes: integrated with one or more circulators integrated on a chip, more than one reflective quantum amplifier; wherein

[0029] The loop is a multi-port-on-chip superconductor, where an input port is used to input quantum information or to the output port of the adjacent loop; an output port for connecting to the input port of the adjacent loop or Outputs the amplified quantum information; the remaining port is used to connect the load separatel

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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

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Claims

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Application Information

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Owner TSINGHUA UNIV
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