CN216596112U

CN216596112U - Backboard, backboard system and quantum computer control system applying backboard system

Info

Publication number: CN216596112U
Application number: CN202122994696.2U
Authority: CN
Inventors: 范良晨; 李雪白
Original assignee: Origin Quantum Computing Technology Co Ltd
Current assignee: Origin Quantum Computing Technology Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-24
Anticipated expiration: 2031-11-29

Abstract

The application discloses a backboard, a backboard system and a quantum computer control system applying the backboard system, wherein the backboard comprises a printed circuit board, at least one power connector and a plurality of functional board card connectors, wherein the power connector and the functional board card connectors are arranged on the printed circuit board; one power connector corresponds to a plurality of functional board connectors, and each power connector is connected with the corresponding plurality of functional board connectors through power lines distributed on the printed circuit board; the plurality of functional board card connectors are in communication connection through signal lines distributed on the printed circuit board; the printed circuit board is provided with a digital ground partition area and an analog ground partition area, the digital ground partition area and the analog ground partition area are connected across a first partition device, and the digital ground partition area and the analog ground partition area are connected to the ground through a second partition device. The back plate can be used for integrating various function modules for quantum bit regulation and reading, and effectively improves the integration level and the expansibility of a quantum computer control system.

Description

Backboard, backboard system and quantum computer control system applying backboard system

Technical Field

The application belongs to the technical field of quantum computing, and particularly relates to a backboard with high integration degree, a backboard system and a quantum computer control system applying the backboard system.

Background

Quantum computers are physical devices that perform high-speed mathematical and logical operations, store and process quantum information in compliance with the laws of quantum mechanics. The quantum computer is characterized by high running speed, strong information processing capability, wide application range and the like. Compared with a common computer, the more information processing amount is, the more beneficial the quantum computer to implement operation is, and the more accurate the operation can be ensured.

The quantum chip is used as a core component of a quantum computer, and a quantum computer control system needs to be arranged in a matching way in order to meet the requirements of various quantum computing tasks. The number of qubit bits on a qubit chip is rapidly increasing, wherein each qubit requires the application of multiple signals for regulation and reading, thus requiring a quantum computer control system to provide a very large number of signal channels for regulation and reading. Conceivably, when the number of qubits on the quantum chip is increased to several hundreds or even several tens of millions of bits, the number of signal channels to be provided in the quantum computer control system is correspondingly increased, the wiring is more complicated, and the system volume is larger.

Currently, devices based on backplanes are increasingly used, a backplane being a circuit board or frame that supports interconnections between other circuit boards, devices and devices, and provides power and data signals to the supported devices. Therefore, the main task of the backplane is to carry the functional boards and distribute power to the functional boards in order to achieve electrical connection and signal transmission. Therefore, the functional module for realizing the quantum bit regulation and reading is designed into each functional board card and is integrated on the backboard, which may be a better scheme for realizing the integration and expansion of the quantum computer control system. However, since the superposition and entanglement states of qubits are extremely fragile, the regulation and reading signals for them need to have a sufficiently high accuracy, whereby the requirements on the signal transmission fidelity of the backplane required for transmitting the qubit regulation and reading signals are high. Currently, there is no suitable backplane for quantum computer control systems.

It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

The embodiment of the application provides a backboard, a backboard system and a quantum computer control system using the backboard, wherein the backboard can meet the signal fidelity requirement of quantum bit regulation and reading, can realize that all functional modules for quantum bit regulation and reading are integrated on the backboard, and effectively improves the integration level and the expansibility of the quantum computer control system.

In order to achieve the above purpose, the embodiments provided by the present application are implemented by the following technical solutions:

a first aspect of the present application provides a backplane, including a printed circuit board, and at least one power connector and a plurality of functional board connectors disposed on the printed circuit board; one power connector corresponds to a plurality of functional board connectors, and each power connector is connected with the corresponding functional board connectors through power lines distributed on the printed circuit board; the plurality of functional board card connectors are in communication connection through signal lines arranged on the printed circuit board; the printed circuit board is provided with a digital ground partition area and an analog ground partition area, the digital ground partition area and the analog ground partition area are bridged with a first partition device, and the digital ground partition area and the analog ground partition area are connected to the ground through a second partition device.

The back plate as described above, wherein preferably, the first or the second blocking device is one or more of a capacitor, an inductor, a magnetic bead, a 0 ohm resistor, and a tvs (transient Voltage super) tube.

The back plate as described above, wherein preferably, the first blocking means is magnetic beads.

The backplane as described above, wherein preferably the second blocking device is a capacitor.

The backplane as described above, wherein preferably all of the functional board connectors are high-speed connectors.

The backplane as described above, wherein preferably, the signal lines from the functional board connector disposed at the central position of the printed circuit board to the other functional board connectors are equal in length.

The backplane as described above, preferably, further includes a plurality of voltage stabilizing modules, where the voltage stabilizing modules are disposed on a power line between the power connector and each of the functional board connectors, and the number of the voltage stabilizing modules is equal to the number of the functional board connectors.

The backplane as described above, preferably, the backplane further includes a plurality of guide pins, the guide pins are fixedly mounted on the printed circuit board, and the guide pins are configured to provide insertion and extraction guides and auxiliary fixing for the power board inserted into the power connector and each functional board inserted into the functional board connector.

The backboard is characterized in that the guide pins are provided with a plurality of guide pins, and the guide pins are arranged on the printed circuit board in a same direction.

The backplane as described above, preferably, further includes a stiffener, the stiffener is disposed on one side of the printed circuit board, and all the power connectors and the functional board connectors are disposed on the other side of the printed circuit board.

The backplane as described above, wherein preferably further comprising a heat dissipation control module, the heat dissipation control module is disposed on the printed circuit board.

The backboard is characterized in that the backboard preferably further comprises a grounding module, the grounding module is arranged on the printed circuit board, and the power connector is connected to the ground through the grounding module.

The backboard as described above preferably further comprises a special ground terminal, the special ground terminal is disposed on the printed circuit board, and the special ground terminal is used for connecting a special ground of a power supply system of the equipment adopting the backboard, wherein the special ground is a ground which connects a certain point in the power supply system with the ground through a grounding body.

A second aspect of the present application provides a backplane system comprising: the multifunctional power supply board comprises the back board, at least one power supply board card and a plurality of functional board cards, wherein all the power supply board cards are plugged in the power supply connector of the back board, and all the functional board cards are plugged in the functional board card connector of the back board.

A third aspect of the present application provides a quantum computer control system comprising a backpanel system as described above.

Compared with the prior art, the backboard is provided with at least one power connector for plugging a power supply board card and a plurality of functional board card connectors for plugging various functional board cards on one printed circuit board, wherein the functional board cards are integrated board cards of functional modules for realizing quantum bit regulation and/or reading; each power connector is connected with a plurality of corresponding functional board connectors through power lines arranged on the printed circuit board to provide working voltage for each functional board inserted on the functional board connectors, and meanwhile, one power connector corresponds to a plurality of local functional board connectors, and the power boards inserted on each power connector can output power supply voltage with different power, so that the power supply requirements of different functional boards on different power supply can be met; the plurality of functional board card connectors are in communication connection through signal lines arranged on the printed circuit board, so that the signal interaction requirements among different functional board cards can be met; the printed circuit board is provided with a digital ground partition region and an analog ground partition region, a first partition device is bridged on the digital ground partition region and the analog ground partition region, the digital ground partition device and the analog ground partition device are connected to the ground, namely, the digital ground partition device and the analog ground partition device on the printed circuit board are connected, and meanwhile, the digital ground partition device and the analog ground partition device are in isolated connection with the ground, so that internal mutual interference between the analog ground partition region and the digital ground partition region can be effectively avoided, the interference of power frequency interference of alternating current and external noise on signals on the back plate can be weakened or even avoided, the interference of switching noise and magnetic field coupling of direct current can be avoided, and the back plate can meet the requirements of quantum bit regulation and reading on signal transmission fidelity.

Drawings

FIG. 1 is a schematic diagram of a backplane architecture provided in an exemplary embodiment;

FIG. 2 is a schematic diagram of a backplate structure including a voltage regulator module according to an exemplary embodiment;

FIG. 3 is a schematic diagram of a back plate structure including guide pins according to an exemplary embodiment;

FIG. 4 is a schematic structural view of the guide pin with a limiting portion shown in FIG. 3;

FIG. 5 is a schematic diagram of a side view of a back plate including reinforcing ribs according to an exemplary embodiment;

FIG. 6 is a schematic diagram of a backplate structure including a heat dissipation control module according to an exemplary embodiment;

FIG. 7 is a schematic diagram of a backplane structure including dedicated ground studs according to an exemplary embodiment.

Description of reference numerals: the system comprises a back plate 1, a printed circuit board 2, a power connector 3, a functional board connector 4, a first partition device 5, a second partition device 6, a signal line 7, a power line 8, a direct current ground 9, a digital ground 10, an analog ground 11, an alternating current ground 12, a voltage stabilizing module 13, a guide pin 14, a limiting part 15, a reinforcing rib 16, a heat dissipation control module 17 and a special ground wiring terminal 18.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

The quantum chip is a calculation execution unit of quantum calculation, is composed of quantum bits, and needs to provide operation regulation and control signals and operation result reading signals for the quantum bits in order to ensure the operation of the quantum bits and the data of the operation results, and correspondingly, operation control signal lines of the quantum bits, such as XY lines and Z lines, need to be arranged on the quantum chip; and a qubit read signal line for reading the qubit quantum state information. Meanwhile, in order to implement the quantum computation, a quantum computer control system arranged outside the quantum chip needs to provide a regulation signal for the operation control signal line, provide a read signal (also called a measurement signal) for one end of the qubit read signal line, and collect a read feedback signal fed back by the other end of the qubit read signal line.

At the stage of the rapid integration development of the current quantum chip, a quantum computer control system is an indispensable component of a quantum computer, and the quantum chip can exert performance advantages to the maximum extent. With the rapid increase of the quantum bit number in the quantum chip, the high integration, the scalability and the miniaturization of the quantum computer control system for quantum chip control are problems to be solved urgently.

Currently, devices based on a backplane are more and more widely applied, and in view of the existing device architecture based on the backplane, functional modules for realizing quantum bit regulation and reading are designed into functional boards and integrated onto the backplane, which may be a better scheme for realizing integration and expansion of a quantum computer control system. However, since the superposition and entanglement states of qubits are extremely fragile, the control and read signals for the qubits need to have a sufficiently high accuracy, thereby placing higher demands on the signal transmission fidelity of the backplane for transmitting the qubit control and read signals.

Referring to fig. 1, fig. 1 is a backplane according to an embodiment of the present application, which includes a printed circuit board 2, and at least one power connector 3 and a plurality of functional board connectors 4 disposed on the printed circuit board 2. One power connector 3 corresponds to a plurality of functional board connectors 4, and each power connector 3 is connected with a plurality of corresponding functional board connectors 4 through a power line 7 arranged on the printed circuit board 2. The plurality of functional board connectors 4 are in communication connection through signal lines 8 arranged on the printed circuit board 2. The printed circuit board 2 is provided with a digital ground 10 and an analog ground 11 partition, a first partition device 5 is connected to the digital ground 10 and the analog ground 11 partition in a bridging manner, and the digital ground 10 and the analog ground 11 are connected to the ground through a second partition device 6.

The back panel 1 provided in the embodiment of the present application is provided with at least one power connector 3 for plugging a power board and a plurality of functional board connectors 4 for plugging various functional boards on one printed circuit board 2. The functional board card is an integrated board card of a functional module for realizing quantum bit regulation and/or reading. Each power connector 3 is connected with a plurality of corresponding functional board connectors 4 through power lines 7 arranged on the printed circuit board 2, and provides working voltage for each functional board inserted in the functional board connectors 4. Meanwhile, one power connector 3 corresponds to a plurality of local function board connectors 4, and the power boards inserted into the power connectors 3 can output power supply voltages with different powers, so that the power supply requirements of different function boards on different power supplies can be met. The functional board card connectors 4 are in communication connection through the signal lines 8 arranged on the printed circuit board 2, so that the signal interaction requirements among different functional board cards can be met. The printed circuit board 2 is provided with a digital ground 10 and an analog ground 11 partition area, and the digital ground 10 and the analog ground 11 partition area are connected with the first partition device 5 in a crossing mode, so that mutual interference between analog and digital can be effectively avoided. And the digital ground 10 and the analog ground 11 are connected to the ground through the second blocking device 6, i.e. the digital ground 10 and the analog ground 11 on the printed circuit board 2 are connected through the first blocking device 5. While the digital ground 10 and the analog ground 11 are in isolated connection with the ground via the second partition means 6. Therefore, the signal on the back plate is effectively prevented from being interfered by power frequency interference of alternating current and external noise, switching noise interference and magnetic field coupling interference of direct current are avoided, and the back plate can meet the signal transmission fidelity requirements of quantum bit regulation and reading.

In the backplane 1 according to the embodiment of the present application, the printed circuit board 2 is provided with an ac ground 12, a dc ground 9, a signal ground, a ground, and a return path ground, and the ac ground 12, the dc ground 9, the signal ground, the ground, and the return path ground are strictly physically separated on the printed circuit board 2. Such as that involving analog ground 11, spaced apart from digital power and alternating current, and grounded at multiple points. Wherein the ac ground 12 is a ground of an ac power supply. The dc ground 9 is the ground of the dc power supply. The signal ground comprises a digital ground 10 and an analog ground 11, and the digital ground 10 is the zero potential of various digital quantity signals. The analog ground 11 is the zero potential of the various analog signals. The return path ground is the ground of the dc return path, i.e. the negative pole of the dc power supply. The ground is able to absorb all the charge, remains stable throughout, and is the final ground reference point, and therefore the ground is the reference 0 potential of the backplate. The ac ground 12, dc ground 9, signal ground and return path ground are all eventually connected to ground.

The digital ground 10 and the analog ground 11 are two independent ground partitions, the digital ground 10 and the analog ground 11 also belong to the same network, and the ground of the direct current return path is shared. If the digital ground 10 and the analog ground 11 are directly connected to the ground of the dc return path, mutual interference will be caused. Therefore, the first blocking means 5 is used for connection, and interference is isolated by the first blocking means 5.

It should be noted that, since the back plate needs to transmit a signal with high precision, the ground and the earth of the dc return path need to be divided, and the housing of the device using the back plate is grounded by a ground peg through a multi-strand cable alone. The ground is generally a reference potential plane that serves as protection, discharges static electricity, and provides stability to signals. The formation of the current requires a loop, without which a potential difference can be present, but no current. For alternating current, a live wire L (live wire) is an energy source, a zero wire N (neutral wire) is a return flow path, a loop is formed in the live wire, and the zero wire is a line led out from a neutral point (N) on the secondary side of a generator or a transformer and forms a loop with a phase line (L). When any one of the metal wires is close to the zero live line loop of the alternating current to generate magnetic field coupling, the metal wire can carry frequency noise of the alternating current. Therefore, even if the middle ground wire is not connected to the 3-hole AC220V power supply line for supplying power to the equipment, the line will be coupled in the zero-live line loop to generate corresponding power frequency noise, that is, the power frequency noise of the alternating current will exist in the ground. Therefore, the ground of the direct current return path cannot be directly short-circuited with the ground, and therefore the second partition device 6 is adopted for connection so as to block power frequency interference.

This is done by physically separating the various grounds on the printed circuit board 2 of the backplane 1 and spatially separating the digital ground 10 and the analog ground 11. The internal mutual interference between simulation and digit is effectively avoided, meanwhile, the interference of power frequency interference of alternating current and external noise on the signal on the back plate is weakened or even avoided, the interference of switching noise and magnetic field coupling of direct current is avoided, and the back plate 1 is ensured to meet the signal transmission fidelity requirement of quantum bit regulation and reading.

It should be noted that the number of the power connectors 3 in fig. 1 is two, and the number of the functional board connectors 4 is three. One of the power connectors supplies power to one of the functional board connectors, and the other power connector supplies power to the remaining two functional board connectors. In practical applications, the number of the power connectors 3 and the number of the functional board connectors 4 may be set as required, and is not limited herein. The division of the power supply line 7, the signal line 8, the dc ground 9, the digital ground 10, the analog ground 11 and the ac ground 12 in the printed circuit board 2 is only a schematic diagram. And the actual number of the first and

second isolation devices

5 and 6 to be used may be set as needed. Fig. 1 is a schematic diagram for facilitating the technical solution of the present application to be better understood by those skilled in the art, and should not be construed as limiting the present application in any way.

As a specific implementation manner of the embodiment of the present application, the first blocking device 5 or the second blocking device 6 employs one or more combinations of a capacitor, an inductor, a magnetic bead, a 0 ohm resistor, and a TVS tube.

Preferably, the first blocking device 5 is a magnetic bead, and an equivalent circuit of the magnetic bead is equivalent to a band stop filter. The second blocking device 6 is a capacitor. Preferably, a ceramic capacitor with an ultra-high withstand voltage value is adopted, and the back plate has a certain electrostatic protection function.

As a specific implementation manner of the embodiment of the present application, all the functional board connectors 4 are high-speed connectors. Preferably, all the functional board connectors 4 can adopt high-speed differential connectors with shielding type high density and suitable for VPX bus system, and can support data rate up to 10Gb/s for high-speed transmission of regulation and reading signals of quantum bits. And the functional board card connector 4 adopts SMA (sub miniature version A) joint, all the SMA joints are grounded, and the isolation of a signal channel in the functional board card connector 4 is effectively improved.

Referring to fig. 1, as a specific implementation manner of the embodiment of the present application, the signal lines 8 from the functional board connector 4 disposed at the central position of the printed circuit board 2 to the other functional board connectors 4 are equal in length.

It should be noted that, in order to fully exert the advantage of the high-speed communication link provided by the backplane, one of the functional board connectors is used as a port for external data interaction of the remaining other functional board connectors. In order to facilitate the wiring on the printed circuit board 2, the functional board connector arranged at the central position of the printed circuit board 2 is used as a port for external data interaction, and the rest of the functional board connectors are distributed and arranged by taking the functional board connector as a center. Meanwhile, in order to ensure that the functions of clock synchronization and/or signal trigger synchronization need to be realized among the functional board connectors, the lengths of the functional board connectors to the signal lines 8 of the functional board connectors serving as external data interaction ports are set to be equal, so that the transmission delay of signals in the signal lines 8 is equal in hardware design.

As shown in fig. 2, as a specific implementation manner of the embodiment of the present application, the power connector further includes a plurality of voltage regulation modules 13, and the voltage regulation modules 13 are disposed on the power line 7 between the power connector 3 and each of the functional board connectors 4. The number of the voltage stabilizing modules 13 is equal to the number of the functional board connectors 4. The voltage stabilizing module 13 can be used for stabilizing the voltage and equalizing the current of the power supply input of each functional board card for the power supply port of each functional board card connector 4, so that the high-speed stability of the signal transmission of each functional board card is ensured.

As shown in fig. 3, as a specific implementation manner of the embodiment of the present application, a plurality of guide pins 14 are further included, and the guide pins 14 are fixedly mounted on the printed circuit board 2. The guide pin 14 is used for providing insertion and extraction guidance and auxiliary fixation for the power board card inserted into the power connector 3 and each function board card inserted into the function board card connector 4.

It should be noted that the power connector 3 and the functional board connector 4 on the backplane 1 belong to a precision connection device. An auxiliary guide device similar to the guide pin 14 is required to perform coarse positioning and guiding, and the guide pin 14 is used to connect and interconnect the power connector 3 or the function board card connecting machine with a power board card or a function board card before the power connector 3 or the function board card connecting machine, so that damage to the power connector 3 or the function board card connector 4 due to structural dislocation can be effectively avoided. The guide pins 14 may be provided at the upper and/or lower end of each power connector 3 or each functional card connector 4. In consideration of the fact that the power supply connectors 3 or the functional board connectors 4 have a long length, the guide pins 14 may be inserted into each of the power supply connectors 3 or each of the functional board connectors 4.

Preferably, in order to further prevent the multiple different power board cards from being mistakenly plugged into all the power connectors 3 and the multiple different function board cards from being mistakenly plugged into all the function board connectors 4. A limiting part 15 is arranged on one guide pin 14 corresponding to each power connector 3 and each functional board connector 4. Referring to fig. 4, the mounting direction of the limiting portion 15 on each guide pin 14 on the printed circuit board 2 is different.

Referring to fig. 5, as a specific implementation of the embodiment of the present application, a reinforcing rib 16 is further included. The reinforcing ribs 16 are arranged on one surface of the printed circuit board 2, and all the power connectors 3 and the functional board connectors 4 are arranged on the other surface of the printed circuit board 2.

It should be noted that the number of the reinforcing ribs 16 is set according to the actual application. Because the backplane 1 is provided with the plurality of power connectors 3 and the plurality of functional board connectors 4 on one printed circuit board 2, and the plugging and unplugging of the board on the power connectors 3 or the functional board connectors 4 requires a plugging and unplugging force as high as 200N, such a large plugging and unplugging force has a high requirement on the strength of the printed circuit board 2. Therefore, the printed circuit board 2 may be provided with the reinforcing ribs 16 to enhance the strength thereof, so as to avoid the situation that the backplane is deformed when the board card is inserted and pulled, and the board card is difficult to be inserted and connected in place on the connector. In addition, the reinforcing rib 16 is arranged on one side of the printed circuit board 2, for example, on the back side of the printed circuit board 2, so that the shortest wiring on the front side of the printed circuit board 2 can be realized, and the signal transmission reliability and the timeliness of the functional board connector 4 can be improved. In addition, the use area of the front surface of the printed circuit board 2 can be effectively increased, more functional components can be arranged, and convenience is brought to function integration and expansion design of the back plate.

Referring to fig. 6, as a specific implementation manner of the embodiment of the present application, in order to facilitate rapid heat dissipation of the backplane and the boards plugged into the backplane, and ensure that signals transmitted on the backplane have high timeliness and reliability, a heat dissipation control module 17 is disposed on the backplane, and the heat dissipation control module 17 is disposed on the printed circuit board 2. The number of the heat dissipation control modules 17 is set according to the actual application requirement. The heat dissipation control module 17 may be connected to the power connector 3 through a power line 7, and may also be connected to the functional board connector 4 through the power connector 3, and the heat dissipation control module 17 is controlled by a functional board plugged in the functional board connector 4. The heat dissipation control module 17 is configured to connect a heat dissipation assembly disposed outside the backplane and control the heat dissipation assembly to be turned on and off, so as to utilize the heat dissipation assembly to perform heat dissipation and cooling on the backplane and each board card inserted therein.

Referring to fig. 7, a specific implementation of the embodiment of the present application is shown, because the quantum computer controls the equipment with high-precision signal measurement and high-precision excitation source in the system. The existing commercial power ground (namely earth ground) is difficult to ensure the high fidelity of system signals due to the interference of power frequency noise, so that a special ground special for a power supply system of the quantum computer control system needs to be manually set. The special purpose is specifically to make a metal connection between a certain point in the power supply system and the ground through a grounding body. In order to facilitate connection of the special ground, a special ground terminal 18 is arranged on the back plate, the special ground terminal 18 is arranged on the printed circuit board 2, the number of the special ground terminals 18 is set to be 3, and the special ground terminal 18 is used for connecting the special ground for a power supply system of the equipment adopting the back plate.

Based on the same inventive concept, an embodiment of the present application provides a backplane system, including: the backplane comprises the backplane, at least one power supply board card and a plurality of functional board cards. All the power board cards are plugged in the power connectors 3 of the back plate 1, and all the function board cards are plugged in the function board card connectors 4 of the back plate. By way of specific example, the power boards include, but are not limited to, AC-DC boards, DC-DC boards, and the functional boards include, but are not limited to, awg (array weather generator) boards, DA (Digital-to-Analog converter) boards, ADDA (Analog-to-Digital converter/Digital-to-Analog converter) boards, daq (data acquisition) boards.

Based on the same inventive concept, one embodiment of the present application provides a quantum computer control system, including the backplane system as described above.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing description of specific embodiments has been presented for purposes of illustration and description. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

The terminology used in the description of the one or more embodiments is for the purpose of describing the particular embodiments only and is not intended to be limiting of the description of the one or more embodiments. As used in one or more embodiments of the present specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in one or more embodiments of the present description to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of one or more embodiments herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. The above description is only for the purpose of illustrating the preferred embodiments of the one or more embodiments of the present disclosure, and is not intended to limit the scope of the one or more embodiments of the present disclosure, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the one or more embodiments of the present disclosure should be included in the scope of the one or more embodiments of the present disclosure.

The construction, features and functions of the present application have been described in detail and illustrated in the drawings, the present application is not limited to the embodiments, but rather the invention is intended to cover all modifications, equivalents and equivalents falling within the spirit and scope of the present application.

Claims

1. A backing sheet, comprising: the method comprises the following steps:

the power supply connector comprises a printed circuit board, and at least one power supply connector and a plurality of functional board card connectors which are arranged on the printed circuit board;

one power connector corresponds to a plurality of functional board connectors, and each power connector is connected with the corresponding functional board connectors through power lines distributed on the printed circuit board;

the plurality of functional board card connectors are in communication connection through signal lines arranged on the printed circuit board;

the printed circuit board is provided with a digital ground partition area and an analog ground partition area, the digital ground partition area and the analog ground partition area are bridged by a first partition device, and the digital ground partition area and the analog ground partition area are connected to the ground through a second partition device.

2. The backplate of claim 1, wherein the first or second isolation device is one or more of a capacitor, an inductor, a magnetic bead, a 0 ohm resistor, and a TVS tube.

3. A backplate according to claim 2 in which the first spacer means comprises magnetic beads.

4. A backplane according to claim 2, characterized in that the second partitioning means is a capacitor.

5. A backplane according to claim 1, characterized in that all of the functional board connectors are high-speed connectors.

6. A backplane according to claim 5, wherein the signal paths from the functional card connector arranged in the central position of the printed circuit board to the other functional card connectors are of equal length.

7. The backplane according to claim 1, further comprising a plurality of voltage stabilization modules disposed on the power line between the power connector and each of the functional board connectors, the number of voltage stabilization modules being equal to the number of functional board connectors.

8. The backing sheet of claim 1 wherein: the power supply board card connector is characterized by further comprising a plurality of guide pins, wherein the guide pins are fixedly assembled on the printed circuit board and used for providing plugging and pulling guidance and assisting fixation for the power supply board card plugged onto the power supply connector and each function board card plugged onto the function board card connector.

9. The backsheet according to claim 8, wherein: and a limiting part is arranged on part of the guide pins, and the mounting directions of the limiting parts on each guide pin on the printed circuit board are different.

10. The backplane of claim 1, further comprising a stiffener disposed on one side of the printed circuit board, all of the power connectors and the functional card connectors being disposed on the other side of the printed circuit board.

11. The backplane of claim 1, further comprising a heat dissipation control module disposed on the printed circuit board.

12. The backboard according to claim 1, further comprising a special ground terminal, wherein the special ground terminal is arranged on the printed circuit board and is used for connecting a special ground of a power supply system of equipment adopting the backboard, and the special ground is a ground which is used for connecting a certain point in the power supply system with the ground through a grounding body.

13. A backplane system comprising a backplane according to any of claims 1 to 12, at least one power board and a plurality of function boards, all of said power boards being plugged into said power connectors of said backplane, all of said function boards being plugged into said function board connectors of said backplane.

14. A quantum computer control system comprising the backpanel system of claim 13.