CN216958460U - Superconducting band-pass filter - Google Patents
Superconducting band-pass filter Download PDFInfo
- Publication number
- CN216958460U CN216958460U CN202123300531.7U CN202123300531U CN216958460U CN 216958460 U CN216958460 U CN 216958460U CN 202123300531 U CN202123300531 U CN 202123300531U CN 216958460 U CN216958460 U CN 216958460U
- Authority
- CN
- China
- Prior art keywords
- superconducting
- bandpass filter
- resonator
- module
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a superconducting bandpass filter configured to act on a control terminal of a superconducting qubit and a quantum coupler to achieve frequency division multiplexing control of the superconducting qubit and the quantum coupler, the superconducting bandpass filter comprising: the power module comprises a current source and a source end impedance which are connected; a superconducting resonator module including a plurality of superconducting resonators of the same frequency that are coupled together; a first LC module including a coupling capacitor and an inductor of the feeder line and the superconducting resonator module; and a second LC module including a load impedance and a coupling capacitance and inductance between the superconducting resonator module and the second LC module.
Description
Technical Field
The utility model relates to the technical field of quantum computing, relates to a control scheme and a physical framework of a quantum computer, and particularly relates to a superconducting band-pass filter.
Background
At present, the technology development of quantum computers is the primary stage, and how to realize precise regulation and control of quantum systems is the key point of quantum computing development. The superconducting quantum chip realized by the superconducting quantum bit is one of the most effective physical platforms for quantum computing at present, and how to realize accurate regulation and control of the large-scale superconducting quantum chip is a core technology and challenge for improving quantum control precision.
As the scale of superconducting quantum processors continues to increase, the number of superconducting qubits and quantum couplers continues to increase, and more control lines are required. The fan-out density of the sample enclosure and the capacity and refrigeration power of the dilution refrigerator are limited, making fan-out of the control line more and more difficult.
SUMMERY OF THE UTILITY MODEL
Based on the above problems, the present invention provides a superconducting bandpass filter to alleviate the above technical problems in the prior art.
Technical scheme (I)
The utility model provides a superconducting bandpass filter configured to act on a control terminal of a superconducting qubit and a quantum coupler to achieve frequency division multiplexing control of the superconducting qubit and the quantum coupler, the superconducting bandpass filter comprising: the power supply module comprises a current source and a source end impedance which are connected; a superconducting resonator module including a plurality of superconducting resonators of the same frequency that are coupled together; the first LC module comprises a coupling capacitor and an inductor of the feeder line and the superconducting resonator module; and a second LC module including a load impedance and a coupling capacitance and inductance between the superconducting resonator module and the second LC module.
According to an embodiment of the utility model, the superconducting resonator module is configured to be adjustable in length.
According to an embodiment of the utility model, the superconducting bandpass filter is configured to adjust a center frequency of the filter by changing a length of the superconducting resonator module.
According to an embodiment of the present invention, the superconducting resonator module is configured such that a distance between the superconducting resonators is adjustable.
According to an embodiment of the present invention, the superconducting bandpass filter is configured to change a coupling strength between the superconducting resonators by changing a distance between the superconducting resonators, thereby changing a passband bandwidth, a passband attenuation, and a squareness factor of the filter.
According to the embodiment of the utility model, the superconducting band-pass filter is constructed in such a way that the coupling length and the distance between the feeder line and the resonator are adjustable, and the passband bandwidth, the passband attenuation and the rectangular coefficient of the filter are changed by adjusting the coupling length and the distance between the feeder line and the resonator.
According to an embodiment of the present invention, the superconducting resonator module is configured such that the number of superconducting resonators therein is adjustable, and the order of the filter is changed by adjusting the number of superconducting resonators.
According to an embodiment of the utility model, each of said superconducting resonators comprises a capacitor and an inductor arranged in parallel.
According to the embodiment of the utility model, the type of the superconducting band-pass filter is selected from Butterworth type, Chebyshev type and elliptic function type corresponding to different design parameters.
According to an embodiment of the utility model, the superconducting resonator is a quarter-wave resonator or a half-wave resonator.
The superconducting band-pass filter provides the possibility of frequency division multiplexing, and solves the problem that the fan-out is difficult to happen due to the excessive number of control lines in future large-scale quantum computation.
(II) advantageous effects
According to the technical scheme, the superconducting band-pass filter has at least one or part of the following beneficial effects:
(1) control signals of a plurality of superconducting quantum bits and quantum couplers can be respectively integrated into one control line fan-out, so that frequency division multiplexing is realized, and the number of control lines is reduced;
(2) the band-pass filter is made of superconducting materials, so that loss and heat generation can be reduced.
Drawings
Fig. 1 is a schematic diagram of the architecture and principle of a superconducting bandpass filter according to an embodiment of the present invention.
Detailed Description
The utility model provides a superconducting band-pass filter, which is used for controlling superconducting quantum bits and quantum couplers by frequency division multiplexing and is greatly suitable for the expansion of future large-scale quantum bits. And the superconducting band-pass filters are respectively added at the control ends close to each superconducting quantum bit and each quantum coupler, so that control signals of a plurality of superconducting quantum bits and quantum couplers can be respectively integrated into one control line fan-out, frequency division multiplexing is realized, and the number of control lines is reduced. The band-pass filter is prepared from the superconducting material, so that loss and heat can be reduced, and quantum computing application can be better realized.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments and the accompanying drawings.
In an embodiment of the present invention, there is provided a superconducting bandpass filter configured to act on a control terminal of a superconducting qubit and a quantum coupler to implement frequency division multiplexing control of the superconducting qubit and the quantum coupler, as shown in fig. 1, the superconducting bandpass filter including:
power supply module including connected current source esAnd source end impedance R1；
A superconducting resonator module comprising a plurality of superconducting resonators of identical frequency coupled together; as shown in fig. 1, two superconducting resonators are included, and a larger number may be provided according to actual needs.
A first LC module including a coupling capacitor C of the feeder line and the superconducting resonator module1And an inductance L1(ii) a And
a second LC module including a load impedance R0And a coupling capacitor C between the superconducting resonator module and thenAnd an inductance Ln。
In an embodiment of the utility model, the superconducting resonator module is configured to be adjustable in length. A superconducting bandpass filter configured to adjust a center frequency of the filter by changing a length of the superconducting resonator module.
In an embodiment of the utility model, the superconducting resonator module is configured such that the distance between the superconducting resonators is adjustable. And a superconducting band pass filter configured to change a coupling strength between the superconducting resonators by changing a distance between the superconducting resonators, thereby changing a pass band bandwidth, pass band attenuation, and squareness factor of the filter.
In the embodiment of the utility model, the superconducting band-pass filter is constructed in such a way that the coupling length and the distance between the feeder line and the resonator are adjustable, and the passband bandwidth, the passband attenuation and the rectangular coefficient of the filter are changed by adjusting the coupling length and the distance between the feeder line and the resonator.
In an embodiment of the present invention, the superconducting resonator module is configured such that the number of superconducting resonators therein is adjustable, and the order of the filter is changed by adjusting the number of superconducting resonators.
In an embodiment of the present invention, each of the superconducting resonators includes a capacitor and an inductor arranged in parallel. As shown in FIG. 1, the first superconducting resonator includes a capacitor C2 and an inductor L2, and the second superconducting resonator includes a capacitor Cn-1And an inductance Ln-1。
In the embodiment of the utility model, the type of the superconducting band-pass filter is selected from Butterworth type, Chebyshev type and elliptic function type corresponding to different design parameters.
In an embodiment of the utility model, the superconducting resonator is a quarter-wave resonator or a half-wave resonator.
In the embodiment of the utility model, a plurality of superconducting resonators with the same frequency are coupled together to form a superconducting band-pass filter. Varying the length of the resonators can vary the center frequency of the filter. Varying the distance between the resonators can vary the coupling strength between the resonators, thereby varying the passband bandwidth, passband attenuation, and squareness factor of the filter. Changing the coupling length and distance of the feed line and the resonator can also change the passband bandwidth, passband attenuation, and squareness factor of the filter. Changing the number of resonators can change the order of the filter. The filter can be a Butterworth type, a Chebyshev type and an elliptic function type, and corresponds to different design parameters. The resonator may be a quarter-wave resonator or a half-wave resonator. The superconducting material can be superconducting aluminum or other superconducting materials. The preparation process of the filter can be a coplanar waveguide process, a strip line process or a microstrip line process, wherein the size of the filter prepared by the coplanar waveguide process is minimum, and the integration with the superconducting qubit chip is facilitated.
The utility model provides a scheme for controlling superconducting quantum bit and quantum coupler by utilizing superconducting band-pass filter frequency division multiplexing in superconducting quantum computation. The problem of scale expansion in large-scale high-depth complex quantum lines can be solved. In future-oriented large-scale programmable quantum lines, the number of control lines can be reduced, and the method has wide application prospect in waveform control of large-scale programmable quantum computation.
So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
From the above description, those skilled in the art should have clear understanding of the superconducting bandpass filter of the present invention.
In summary, the present invention provides a superconducting bandpass filter, which utilizes the superconducting bandpass filter to realize frequency division multiplexing to control superconducting qubits and quantum couplers; the scheme is greatly suitable for the expansion of future large-scale quantum bits; the method provides the possibility of frequency division multiplexing, and solves the problem that the fan-out is difficult due to the excessive number of control lines in the future large-scale quantum computation.
It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", etc., used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present invention. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present invention. And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate contents of the embodiments of the present invention.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element relative to another or relative to a method of manufacture, and is used merely to allow a given element having a certain name to be clearly distinguished from another element having a same name.
Further, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A superconducting bandpass filter configured to act on a control terminal of a superconducting qubit and a quantum coupler to implement frequency division multiplexing control of the superconducting qubit and the quantum coupler, the superconducting bandpass filter comprising:
the power supply module comprises a current source and a source end impedance which are connected;
a superconducting resonator module including a plurality of superconducting resonators of the same frequency that are coupled together;
a first LC module including a coupling capacitor and an inductor of the feeder line and the superconducting resonator module; and
a second LC module including a load impedance and a coupling capacitance and inductance between the superconducting resonator module and the second LC module.
2. The superconducting bandpass filter of claim 1 wherein the superconducting resonator module is configured to be length-tunable.
3. The superconducting bandpass filter of claim 2, configured to adjust a center frequency of the filter by changing a length of the superconducting resonator module.
4. The superconducting bandpass filter of claim 1 wherein the superconducting resonator module is configured such that a distance between superconducting resonators is adjustable.
5. The superconducting bandpass filter of claim 4, configured to vary the passband bandwidth, passband attenuation, and squareness factor of the filter by varying the coupling strength between the superconducting resonators by varying the distance between the superconducting resonators.
6. The superconducting bandpass filter of claim 1, wherein the filter is configured such that the coupling length and distance of the feedline and the resonator are adjustable, and the passband bandwidth, passband attenuation, and squareness factor of the filter are varied by adjusting the coupling length and distance of the feedline and the resonator.
7. The superconducting bandpass filter of claim 1 wherein the superconducting resonator module is configured such that the number of superconducting resonators therein is adjustable, and wherein the order of the filter is changed by adjusting the number of superconducting resonators.
8. The superconducting bandpass filter of claim 1 wherein each of the superconducting resonators includes a capacitor and an inductor arranged in parallel.
9. The superconducting bandpass filter of claim 1 wherein the superconducting bandpass filter is of a type selected from Butterworth, Chebyshev, and elliptic function types, in response to different design parameters.
10. The superconducting bandpass filter of claim 1 wherein the superconducting resonator is a quarter-wave resonator or a half-wave resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123300531.7U CN216958460U (en) | 2021-12-23 | 2021-12-23 | Superconducting band-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123300531.7U CN216958460U (en) | 2021-12-23 | 2021-12-23 | Superconducting band-pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216958460U true CN216958460U (en) | 2022-07-12 |
Family
ID=82313050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123300531.7U Active CN216958460U (en) | 2021-12-23 | 2021-12-23 | Superconducting band-pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216958460U (en) |
-
2021
- 2021-12-23 CN CN202123300531.7U patent/CN216958460U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209374645U (en) | Anti-interference filter and communication equipment | |
| Zhu et al. | Compact waveguide dual-band filters and diplexers | |
| US7825751B2 (en) | Resonant circuit, filter circuit, and antenna device | |
| CN106654497B (en) | Minimized wide-band slow wave half module substrate integrated wave guide coupler and its design method | |
| Athukorala et al. | Design of compact dual-mode microstrip filters | |
| CN103326093A (en) | Novel cross coupling substrate integrated waveguide band-pass filter | |
| CN204375898U (en) | A kind of radial power divider/synthesizer of miniaturization of high isolation | |
| CN101599564A (en) | Controllable electromagnetic coupling microstrip split-ring resonator filter | |
| CN201450087U (en) | Micro-strip open loop resonator filter capable of controlling electromagnetic coupling | |
| CN216958460U (en) | Superconducting band-pass filter | |
| CN100435409C (en) | Super wide band microstrip filter | |
| Nguyen et al. | Simple-design and compact MIM CRLH microstrip 3-dB coupled-line coupler | |
| CN205376694U (en) | Looks ware is moved to ultra wide band definite value based on capacitive load | |
| CN112838840A (en) | Broadband equal-power distribution/synthesis circuit topology with broadband deep isolation | |
| Nwajana et al. | Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer: Emerging Research and Opportunities: Emerging Research and Opportunities | |
| CN114221100A (en) | Superconducting band-pass filter | |
| CN103338017A (en) | Lumped-parameter wideband 180-degree coupler with harmonic suppression function | |
| WO2020134419A1 (en) | Continuously adjustable analog phase shifter | |
| CN106229591B (en) | A kind of miniaturization Terahertz low-pass filter | |
| CN206076464U (en) | A kind of miniaturization Terahertz low pass filter | |
| Zhang et al. | Compact design of high-temperature superconducting duplexer and triplexer for satellite communications | |
| CN100459281C (en) | Microwave power distributor made from lumped element left hand transmission line | |
| CN110995167B (en) | Internal matching power tube applying optimized synthesis network | |
| CN210142707U (en) | Filter and filtering loop structure thereof | |
| CN103326090B (en) | Tee joint band high-temperature superconducting filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |