Electrode control device for ion trap chip and ion trap quantum computer

Abstract

The present invention discloses an electrode control device for an ion trap chip, comprising a chassis, a chassis dispatching center arranged in the chassis, and a plurality of electrode control boards; each electrode control board is provided with a plurality of electrode output interfaces, and the plurality of electrode output interfaces are all located on the chassis; each electrode control board is electrically connected to a corresponding electrode through a corresponding electrode output interface, and is used to input a corresponding electrode control signal to the corresponding electrode to control the working state of the corresponding electrode; the chassis dispatching center is used to receive a control signal sent by a main control module of an ion trap quantum computer and send the control signal to each electrode control board, so that each electrode control board generates a corresponding electrode control signal to drive the work of the corresponding electrode, thereby realizing simultaneous control of multiple electrodes, and the present invention has the characteristics of small size and low cost. The present invention also provides an ion trap quantum computer.

Description

Technical Field

[0001] The invention relates to electrode control of an ion trap chip, and in particular to an electrode control device of an ion trap chip and an ion trap quantum computer. Background Art

[0002] There is a chip for trapping ions in an ion trap quantum computer. Common chip types include blade trap type and surface trap type. Among them, blade trap type chips can trap ions effectively and quickly, while surface trap type chips have better scalability. As the number of quantum bits operated by ion trap quantum computers increases, surface trap type chips have become the mainstream chips. However, when there are dozens or even hundreds of electrodes that need to be controlled in an ion trap quantum computer, the effective, rapid and accurate control of large-scale electrodes by surface trap type chips is one of the important problems that must be solved at present.

[0003] However, the current electrode control scheme of ion trap quantum computers generally uses the existing integrated circuit boards on the market, which have the problems of large size and high cost. As the number of electrodes controlled by ion trap quantum computers increases, the number of integrated circuit boards required also increases, which in turn leads to a larger size and higher cost of the entire ion trap quantum computer, which does not meet the existing usage requirements. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide an electrode control device for an ion trap chip, which can solve the problems of large size and high cost of the electrode control equipment of the existing ion trap quantum computer.

[0005] A second object of the present invention is to provide an ion trap quantum computer, which can solve the problems of large size and high cost of electrode control equipment of existing ion trap quantum computers.

[0006] One of the purposes of the present invention is achieved by the following technical solution:

[0007] An electrode control device for an ion trap chip is applied to an ion trap quantum computer. The electrode control device comprises a chassis, a chassis dispatching center arranged in the chassis, and a plurality of electrode control boards; wherein the chassis dispatching center is electrically connected to a main control module of the ion trap quantum computer, and each electrode control board is electrically connected;

[0008] Each electrode control board is provided with a plurality of electrode output interfaces, and the plurality of electrode output interfaces are all located on the chassis; each electrode control board is electrically connected to a corresponding electrode through a corresponding electrode output interface, and is used to input a corresponding electrode control signal to the corresponding electrode to control the working state of the corresponding electrode;

[0009] The chassis dispatching center is used to receive the control signal sent by the main control module of the ion trap quantum computer and send the control signal to each electrode control board, so that each electrode control board generates the corresponding electrode control signal to drive the operation of the corresponding electrode.

[0010] Furthermore, the electrode control board includes a power module, a control chip and a signal processing module;

[0011] The power supply module is electrically connected to the power supply of the electrode control device, and is used to obtain the corresponding power supply from the power supply of the electrode control device and convert it into the working power supply of each module in the electrode control board; the control chip and the signal processing module are electrically connected to the power supply module respectively;

[0012] The control chip is electrically connected to the chassis dispatch center and the signal processing module, and is used to receive the control signal sent by the chassis dispatch center and generate multiple digital signals according to the control signal, and output each digital signal to the corresponding electrode after being processed by the corresponding signal processing module;

[0013] The signal processing module includes an analog-to-digital converter and an amplifying circuit module; wherein the analog-to-digital converter is used to convert the digital signal into an analog signal; and the amplifying circuit module is used to amplify the analog signal and output it to the corresponding electrode through the corresponding electrode output interface.

[0014] Furthermore, the control chip is an FPGA chip, and the FPGA chip is communicatively connected to the chassis dispatching center via a first SFP interface.

[0015] Furthermore, the electrode control board also includes a control manager; the control manager is communicatively connected to the chassis dispatch center, and is used to send address information of the electrode control board to the chassis dispatch center, so that the chassis dispatch center can perform device identification on the electrode control board.

[0016] Furthermore, the control manager is connected to the chassis dispatch center through an I2C interface; the control manager is implemented using an ARM chip.

[0017] Furthermore, the electrode control board also includes a monitoring module and an LED light display module; wherein the monitoring module is electrically connected to the control manager, and is used to monitor the electrode control board and upload monitoring data to the control manager; the LED light display module is electrically connected to the control manager, and is used to display the working status of the electrode control board.

[0018] Furthermore, the electrode control board also includes a clock signal source; the clock signal source is used to generate a clock synchronization signal to synchronize the clocks of various modules on the electrode control board; the power module, control chip, and signal processing module are electrically connected to the power module respectively.

[0019] Furthermore, the electrode control board also includes a transceiver module and / or an Ethernet interface; the control chip is communicatively connected with the corresponding electrode control board in the chassis via the transceiver module or the Ethernet interface;

[0020] The electrode control board also includes a USB interface, and the control manager is connected to the host computer through the USB interface for receiving a debugging signal sent by the host computer to debug the corresponding electrode control board.

[0021] Furthermore, the chassis is a 9U chassis of MicroTCA.4, and the chassis size is 482.6 mm*373.3 mm*397.25 mm.

[0022] The second object of the present invention is achieved by adopting the following technical solution:

[0023] An ion trap quantum computer comprises a main control module and several electrode control devices of an ion trap chip as one of the purposes of the present invention; the main control module is electrically connected to a host computer and the electrode control devices, and is used to receive control instructions sent by the host computer and send them to each electrode control device, thereby realizing synchronous control of multiple electrodes of the ion trap quantum computer through each electrode control device.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention integrates multiple electrode control boards into one chassis, and realizes simultaneous control of multiple electrodes through one chassis, thereby meeting the demand for simultaneous control of multiple electrodes of an ion trap quantum computer in the prior art; at the same time, the present invention also has the characteristics of small size and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the connection between an electrode control board in an electrode control device of an ion trap chip provided by the present invention, a chassis dispatching center and a main control board of an ion trap quantum computer;

[0027] Figure 2 for Figure 1 Connection diagram of each module of the middle electrode control board. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0029] Embodiment 1

[0030] The present invention provides an electrode control device for an ion trap chip, which controls a plurality of electrodes through an electrode control board card, and also integrates the plurality of electrode control boards into a chassis, so that a chassis can simultaneously control a large number of electrodes at one time, reduce the number of integrated power supplies, and meet the electrode control requirements of an existing ion trap quantum computer; meanwhile, the chassis of the present invention has a relatively small volume.

[0031] like Figure 1 and Figure 2 As shown, the present invention provides a preferred embodiment, an electrode control device for an ion trap chip, comprising a chassis, a plurality of electrode control boards and a chassis dispatching center arranged in the chassis.

[0032] Generally speaking, an ion trap quantum computer includes a main control board, which is connected to a host computer for communication, and is used to obtain control instructions sent by the host computer, and send the control instructions to each electrode control device. That is, the chassis dispatch center of the electrode control device in this embodiment is connected to the main control board of the ion trap quantum computer for communication, and is used to receive control instructions from the host computer sent by the main control board.

[0033] In this way, the chassis dispatching center converts the received control instructions accordingly to generate corresponding digital signals and sends them to each electrode control board.

[0034] Among them, the main control board of the ion trap quantum computer, as the main controller of the ion trap quantum computer, realizes the communication connection between the host computer and each electrode control device so as to send control instructions to each chassis dispatching center.

[0035] Since there may be more than one electrode control board in a chassis, the present invention also sets a chassis dispatching center between the ion trap quantum computer and the electrode control board to realize the dispatching of multiple electrode control boards in the chassis. At the same time, other circuit modules may be arranged in the chassis, so the chassis dispatching center is also electrically connected to other circuit modules for coordinated control of other circuit modules.

[0036] Preferably, the electrode control board is provided with a plurality of electrode output ports, and the electrode output ports are located on the housing of the chassis. The electrode control board is electrically connected to the corresponding external electrode through each electrode output port, and is used to output a corresponding voltage signal to the corresponding electrode to control the operation of the electrode. That is, the present invention can realize simultaneous control of multiple electrodes by integrating multiple electrode control boards into one chassis, which greatly meets the control requirements of ion trap quantum computers in the prior art for multiple electrodes.

[0037] Preferably, the chassis in this embodiment is preferably a 9U chassis of MicroTCA.4, which has a size of only 482.6 mm * 373.3 mm * 397.25 mm, which is greatly reduced in size compared to the traditional equipment that requires dozens of circuit modules to achieve large-scale electrode control.

[0038] Preferably, the number of electrode control boards in this embodiment is 12, and each electrode control board is provided with 16 electrode output ports. In this way, the chassis can control the operation of 16*12 electrodes simultaneously, greatly meeting the needs of existing ion trap quantum computers.

[0039] Preferably, the electrode control board includes a power module, a control chip and a signal processing module.

[0040] One end of the power module is electrically connected to the power supply of the chassis, and is used to obtain power from the power supply of the chassis and convert it into internal working power for the electrode control board, so as to be used by each module on the electrode control board. The control chip and the signal processing module are both electrically connected to the power module to obtain the corresponding power supply.

[0041] Preferably, the control chip is also electrically connected to the chassis dispatching center and the signal processing module, and is used to receive the control signal sent by the chassis dispatching center and generate multiple digital signals, and then process each digital signal through the corresponding signal processing module and output it to the corresponding electrode through the corresponding electrode output interface to achieve control of the electrode.

[0042] Since the present embodiment can control a plurality of electrodes simultaneously, a plurality of signal processing modules are also provided, and each digital signal can be processed by a corresponding signal processing module and then output to a corresponding electrode.

[0043] The signal processing module includes an analog-to-digital converter and an amplifier circuit module. The analog-to-digital converter is used for analog-to-digital conversion, that is, converting a digital signal into an analog signal. The amplifier circuit module is used to amplify the analog signal and then output the corresponding voltage signal to the electrode to control the operation of the electrode. Preferably, in the actual application process, the analog-to-digital converter can process two signals at the same time, while the amplifier circuit module can only process one signal. Therefore, in the actual application process, the number of analog-to-digital converters and amplifier circuit modules can also be flexibly set.

[0044] Preferably, the control chip uses an FPGA (Field Programmable Gate Array) chip, which is connected to the chassis dispatch center through the first SFP interface (Small Form-factor Pluggables) to achieve data interaction. SFP is an upgraded version of GBIC. Among them, GBIC (Gigabit Interface Converter) is an interface device that converts gigabit electrical signals into optical signals.

[0045] Preferably, the electrode control board is also provided with a second SFP interface, and the control chip can be connected to other chassis of the ion trap quantum computer through the second SFP interface.

[0046] Preferably, the electrode control board also includes a control manager. The control manager is connected to the chassis dispatch center for communication, and is used to send the address information of the electrode control board to the chassis dispatch center, so that the chassis dispatch center can identify the electrode control board. Since the chassis may contain not only the electrode control board but also other circuit boards, a control manager is provided for each electrode control board to communicate with the chassis dispatch center to identify the electrode control board.

[0047] The electrode control board of the present invention realizes the control of the electrode control board simultaneously through the control manager and the control chip, wherein the control chip is mainly used to receive the control signal sent by the chassis dispatch center to realize the processing of the control signal to generate the voltage signal of the control electrode, thereby realizing the control of the electrode. In addition to data exchange with the chassis dispatch center, the control manager also realizes the coordinated control of each module in the electrode control board. Specifically, the control manager is also connected to the chassis dispatch center through the I2C interface.

[0048] Preferably, the control manager is also connected to the host computer through a USB interface for receiving a debugging signal sent by the host computer to debug the electrode control board.

[0049] Preferably, the control manager can be implemented by using an ARM chip, or by writing the Linux system into a corresponding circuit module.

[0050] Preferably, the electrode control board also includes a clock signal source. The clock signal source is used to generate a clock signal so that the clocks of other modules in the electrode control board are synchronized. Specifically, the power module, the control chip, the control manager, and the signal processing module are electrically connected to the clock signal source respectively. Since an electrode control board of this embodiment can realize the control of 16 electrodes, the clock signal source can simultaneously generate 16 low-jitter, high-precision clock signals to ensure the nanosecond-level synchronization accuracy of multiple electrodes.

[0051] Preferably, the electrode control board also includes a transceiver module and / or an Ethernet interface, wherein the control chip exchanges data with other electrode control boards through the transceiver module or the Ethernet interface, thereby realizing data exchange among multiple motor control boards in one chassis.

[0052] Preferably, the electrode control board also includes a monitoring module and an LED light display module. The monitoring module and the LED light display module are electrically connected to the control manager, respectively. The monitoring module is used to send monitoring data to the control manager so that the control manager can obtain the working status of the electrode control board. For example, the monitoring module includes a temperature sensor, through which the working temperature of the electrode control board can be understood in real time, so that corresponding measures can be taken later.

[0053] The LED light display module is used to display the working status of the electrode control board, for example, by displaying different colors to identify the working status of the electrode control board.

[0054] Preferably, the electrode control board also includes a storage module, which is electrically connected to the control chip and the control manager and is used to store relevant data of the electrode control board and relevant data in the data interaction process.

[0055] Embodiment 2

[0056] The present invention also provides another embodiment, an ion trap quantum computer, which includes a main control module and a plurality of electrode control devices. Each electrode control device is an electrode control device of the ion trap chip provided in Example 1. The chassis dispatch center of the electrode control device of each ion trap chip is connected to the host computer through the main control module to realize the control of a large number of electrodes by the host computer through the electrode control device, so as to meet the existing electrode control requirements.

[0057] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An electrode control device for an ion trap chip, used in an ion trap quantum computer, It is characterized in that The electrode control device comprises a chassis, a chassis dispatching center and a plurality of electrode control boards arranged in the chassis; wherein the chassis dispatching center is electrically connected to the main control module of the ion trap quantum computer and each electrode control board respectively; Each electrode control board is provided with a plurality of electrode output interfaces, and the plurality of electrode output interfaces are all located on the chassis; each electrode control board is electrically connected to a corresponding electrode through a corresponding electrode output interface, and is used to input a corresponding electrode control signal to the corresponding electrode to control the working state of the corresponding electrode; The chassis dispatching center is used to receive the control signal sent by the main control module of the ion trap quantum computer and send the control signal to each electrode control board, so that each electrode control board generates the corresponding electrode control signal to drive the operation of the corresponding electrode.

2. The electrode control device for the ion trap chip according to claim 1, It is characterized in that The electrode control board includes a power module, a control chip and a signal processing module; The power supply module is electrically connected to the power supply of the electrode control device, and is used to obtain the corresponding power supply from the power supply of the electrode control device and convert it into the working power supply of each module in the electrode control board; the control chip and the signal processing module are electrically connected to the power supply module respectively; The control chip is electrically connected to the chassis dispatch center and the signal processing module, and is used to receive the control signal sent by the chassis dispatch center and generate multiple digital signals according to the control signal, and output each digital signal to the corresponding electrode after being processed by the corresponding signal processing module; The signal processing module includes an analog-to-digital converter and an amplifying circuit module; wherein the analog-to-digital converter is used to convert the digital signal into an analog signal; and the amplifying circuit module is used to amplify the analog signal and output it to the corresponding electrode through the corresponding electrode output interface.

3. The electrode control device of the ion trap chip according to claim 2, It is characterized in that The control chip is an FPGA chip, and the FPGA chip is communicatively connected with the chassis dispatching center via a first SFP interface.

4. The electrode control device of the ion trap chip according to claim 2, It is characterized in that The electrode control board also includes a control manager; the control manager is in communication connection with the chassis dispatch center and is used to send address information of the electrode control board to the chassis dispatch center so that the chassis dispatch center can perform device identification on the electrode control board.

5. The electrode control device of the ion trap chip according to claim 4, It is characterized in that The control manager is connected to the chassis dispatch center through an I2C interface; the control manager is implemented using an ARM chip.

6. The electrode control device of the ion trap chip according to claim 4, It is characterized in that The electrode control board also includes a monitoring module and an LED light display module; wherein the monitoring module is electrically connected to the control manager, and is used to monitor the electrode control board and upload monitoring data to the control manager; the LED light display module is electrically connected to the control manager, and is used to display the working status of the electrode control board.

7. The electrode control device of the ion trap chip according to claim 2, It is characterized in that The electrode control board also includes a clock signal source; the clock signal source is used to generate a clock synchronization signal to synchronize the clocks of various modules on the electrode control board; The power module, the control chip and the signal processing module are electrically connected to the power module respectively.

8. The electrode control device of the ion trap chip according to claim 4, It is characterized in that The electrode control board also includes a transceiver module and / or an Ethernet interface; the control chip is connected to the corresponding electrode control board in the chassis through the transceiver module or the Ethernet interface; The electrode control board also includes a USB interface, and the control manager is connected to the host computer through the USB interface for receiving a debugging signal sent by the host computer to debug the corresponding electrode control board.

9. The electrode control device of the ion trap chip according to claim 1, It is characterized in that The chassis is a MicroTCA.4 9U chassis with a chassis size of 482.6 mm * 373.3 mm * 397.25 mm.

10. An ion trap quantum computer, It is characterized in that The invention comprises a main control module and several electrode control devices of an ion trap chip as described in any one of claims 1 to 9; the main control module is electrically connected to a host computer and the electrode control devices, and is used to receive control instructions sent by the host computer and send them to each electrode control device, thereby realizing synchronous control of multiple electrodes of an ion trap quantum computer through each electrode control device.

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