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Low-temperature coupler and application method thereof

A coupler and low-temperature technology, which is applied in the field of couplers, can solve problems such as unsatisfactory superconducting qubits, and achieve the effects of reducing design costs, simple circuit design, and low power consumption

Pending Publication Date: 2018-11-06
HEFEI ORIGIN QUANTUM COMP TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the prior art cannot meet the problem of realizing the synthesis of intermediate frequency pulse and DC bias signal of superconducting qubit at extremely low temperature

Method used

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  • Low-temperature coupler and application method thereof
  • Low-temperature coupler and application method thereof
  • Low-temperature coupler and application method thereof

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Embodiment Construction

[0032] In order to have a further understanding and understanding of the structural features and the achieved effects of the present invention, preferred embodiments and accompanying drawings are used to describe in detail, as follows:

[0033] A cryogenic coupler and method of use thereof, such as Figure 1-3 As shown, it includes cavity 1 , cover 2 , connector 3 and PCB board 4 .

[0034] The cavity 1 is surrounded by the bottom 11 and the side wall 12, and the middle part of the cavity 1 is connected with an isolation block 121. The isolation block 121 includes a first isolation block 1211 and a second isolation block 1212 that are opposite and spaced apart, and the first isolation block Both 1211 and the second spacer 1212 are integrally formed with the corresponding side wall 12 . The first isolation block 1211 and the second isolation block 1212 are separated by a certain distance, so that the isolation block 121 divides the interior of the cavity 1 into two connected p...

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Abstract

The invention provides a low-temperature coupler and an application method thereof. The low-temperature coupler comprises a cavity, wherein a cover covers an opening of the cavity, a PCB is arranged in the cavity and comprises an AC part and a DC part, the AC part is provided with an AC functional module, an input port of the AC part inputs a radio frequency signal and a pulse signal, the DC partis provided with a medium-frequency functional module and a low-frequency pulse functional module which are connected with each other, and the medium-frequency functional module and the low-frequencypulse functional module are provided with devices used for preventing signal interference, and a signal of the AC part and a signal of the DC part output through the same output port. The low-temperature coupler can be compatible with a 4-8GHz continuous microwave signal and also can be compatible with an arbitrary wave pulse signal with lowest 10MHz, and serious deformation of the signal is prevented.

Description

technical field [0001] The invention relates to the technical field of couplers, in particular to a low-temperature coupler and a method for using the same. Background technique [0002] The regulation of qubits relies on high-precision analog input signals. For superconducting qubits, the signals it relies on are mainly divided into three types: high-frequency pulses (4-8GHz frequency band), intermediate frequency pulses (0.01-500MHz frequency band), and DC bias signals (<1kHz). When manipulating superconducting qubits, we not only need to apply these three types of pulse signals at the same time, but also need to synthesize the above signals in one channel. Usually, we use multi-port coupling devices or modules to complete the signal synthesis. Considering the characteristics of the pulse signal, the coupling device or module must have a very high port impedance matching design while synthesizing the signal. The port impedance matching performance of passive multi-por...

Claims

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Application Information

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IPC IPC(8): H01P5/16
CPCH01P5/16
Inventor 李松高峰程帅孔伟成
Owner HEFEI ORIGIN QUANTUM COMP TECH CO LTD
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