Device for preparing needle-shaped electrode of ion trap

Abstract

The utility model provides a device for preparing a needle-shaped electrode of an ion trap, which comprises a reaction tank for containing an electrolyte solution; the vertical clamping mechanism is used for fixing and clamping the metal rod; the lifting mechanism is used for immersing the metal rod into the electrolyte solution by a preset depth; the magnetic field coil is used for generating a magnetic field to enable the electrolyte solution to rotate in the reaction tank, a cathode is arranged in the reaction tank, and the metal rod and the cathode are connected to a positive electrode and a negative electrode of a direct-current power supply respectively; and the part, immersed in the electrolyte solution, of the metal rod is subjected to electrochemical reaction in the electrolyte solution to prepare the needle-shaped electrode for the ion trap. According to the utility model, the problem that the surface of the needle tip of the prepared needle-shaped electrode is uneven due to the fact that metal acid radical ions generated in the electrochemical reaction process of the bar are adhered and deposited on the surface of the bar is effectively solved, so that the needle tip of the prepared needle-shaped electrode has better surface smoothness.

Description

Technical Field

[0001] The utility model relates to the technical field of quantum computers, in particular to a device for preparing ion trap needle electrodes. Background Art

[0002] At present, the development and application of quantum computers based on ion traps are accelerating. This quantum computing device mainly uses ion traps to trap ions and manipulate their quantum states to achieve the storage and manipulation of quantum bits. It also uses quantum entanglement to achieve quantum parallel computing and quantum state transmission, and reads the state of quantum bits by measuring the physical properties of ions, thereby completing quantum computing tasks.

[0003] The needle ion trap is one of the more commonly used ion trap types in quantum computers. This type of ion trap usually includes two sets of electrodes arranged opposite to each other, where each set of electrodes may include three needle-shaped electrodes. The two electrodes facing each other in the middle are loaded with radio frequency (RF) voltages. These RF voltages can generate a dynamic electric field in the trap, which exerts an alternating force on the ions, causing the ions to oscillate in the trap; the remaining four electrodes are loaded with direct current (DC) bias voltages, which can be used to adjust the static electric field of the ions to eliminate or reduce the residual micro-motion of the ions. Under the combined action of the above-mentioned radio frequency (RF) voltage and direct current (DC) bias voltage, ions can be trapped in a specific area in the trap to achieve the manipulation and detection of quantum bits.

[0004] It can be seen that the needle-shaped electrode is an important component in the ion trap, and the symmetry of the shape and surface smoothness of its needle tip will affect the ion trapping performance. Therefore, it is necessary to use high-precision preparation processes and technologies to manufacture the needle-shaped electrode to ensure that the needle-shaped electrode used in the ion trap has a good needle tip shape and surface smoothness to reduce its adverse effects on the ion trapping performance. Summary of the invention

[0005] The utility model aims to provide a device for preparing an ion trap needle electrode.

[0006] The utility model provides a device for preparing an ion trap needle electrode, the device comprising: a first direct current power supply and a second direct current power supply; a reaction pool, arranged on an operating platform and used for containing an electrolyte solution; a vertical clamping mechanism, suspended above the reaction pool and used for fixing and clamping a metal rod; a lifting mechanism, arranged on one side of the reaction pool and used for moving the vertical clamping mechanism in a vertical direction to immerse the metal rod to a predetermined depth in the electrolyte solution, the metal rod being sleeved in a capillary of the vertical clamping mechanism, the capillary being perpendicular to the liquid surface of the electrolyte solution; a magnetic field coil, wound on the outer wall of the reaction pool and connected to the first direct current power supply, used for generating a magnetic field, the magnetic field being used for rotating the electrolyte solution in the reaction pool, wherein a cathode is arranged in the reaction pool, the metal rod and the cathode are respectively connected to the positive electrode and the negative electrode of the second direct current power supply, so that the part of the metal rod immersed in the electrolyte solution undergoes an electrochemical reaction in the electrolyte solution to prepare the needle electrode for the ion trap.

[0007] Preferably, the lifting mechanism comprises a slide rail arranged in a vertical direction and a slider capable of moving in the vertical direction along the slide rail, wherein the vertical clamping mechanism is fixed on the slider.

[0008] Preferably, the vertical clamping mechanism is configured as a syringe, and the capillary tube is configured as a needle of the syringe.

[0009] Preferably, the vertical clamping mechanism further comprises an electronic level, and the electronic level is arranged on the bottom end surface of the syringe barrel of the syringe.

[0010] Preferably, the metal rod passes through the center of the magnetic field coil and is immersed in the electrolyte solution.

[0011] Preferably, the electrolyte solution rotates around the metal rod in the reaction cell.

[0012] Preferably, the cathode is configured as a circular ring-shaped member, and the metal rod is disposed at the center of the inner circumference of the circular ring-shaped member.

[0013] Preferably, a shielding barrel is further provided in the reaction pool, and the shielding barrel is sleeved between the metal rod and the inner circumference of the annular component.

[0014] Preferably, a needle receiving barrel is further provided in the reaction pool, and the needle receiving barrel is provided below the metal rod.

[0015] Preferably, a pad for supporting the shielding barrel and the annular component is also provided in the reaction pool.

[0016] Preferably, the voltage of the second DC power supply is set at 6.5V.

[0017] Preferably, the metal rod is made of tungsten, the cathode is made of graphite, and the electrolyte solution is made of sodium hydroxide.

[0018] Preferably, the magnetic field coil is made of copper.

[0019] Preferably, the capillary tube, the shielding barrel and the needle barrel are all made of stainless steel.

[0020] The utility model effectively solves the problem that the surface of the needle tip of the prepared needle-shaped electrode is uneven due to the adhesion and precipitation of metal acid radical ions generated by the rod material during the electrochemical reaction process on the surface of the rod material, so that the needle tip of the prepared needle-shaped electrode has better surface smoothness. This high-precision needle-shaped electrode helps to improve the stability of ion trapping and reduce the possibility of ion escape from the trap. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above-mentioned objects and features of the present invention will become more clear through the following description in conjunction with the accompanying drawings.

[0022] Figure 1 The structure diagram of the device for preparing the ion trap needle-shaped electrode of the utility model is schematically shown.

[0023] Figure 2 The cross-sectional view of the device for preparing the ion trap needle electrode of the utility model is schematically shown.

[0024] Figure 3 The exploded view of the device for preparing the ion trap needle electrode of the utility model is schematically shown. DETAILED DESCRIPTION

[0025] In a needle electrode ion trap, the higher the smoothness of the needle electrode tip surface, the more uniform the electric field distribution in the trap, the more stable the movement of ions in the trap, and the better the ion trap's ion trapping effect. Conversely, the higher the surface roughness of the needle electrode, the more irregular the surface of the needle electrode, which will lead to an increase in the unevenness of the electric field distribution in the trap. The uneven electric field will produce additional disturbances on the ions, making the ions' originally stable resonant motion state unstable, and their motion state becoming more active, which is equivalent to gaining additional energy, just like being heated. This phenomenon of ion heating will reduce the stability of the ions in the trap, causing the ions to lose their stable quantum state, and may even cause the ions to escape from the ion trap, thereby affecting the ion trapping effect of the ion trap on the ions. In view of this, the utility model provides a device for preparing an ion trap needle electrode.

[0026] Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

[0027] Reference Figure 1 , Figure 2 and Figure 3 The device for preparing an ion trap needle electrode of the utility model comprises at least two DC power supplies (not shown), a reaction pool 101, a vertical clamping mechanism 102, a lifting mechanism 103 and a magnetic field coil 104, wherein the reaction pool 101 can be arranged on an operating platform for containing an electrolyte solution; the vertical clamping mechanism 102 can be suspended above the reaction pool 101 for fixing and clamping a metal rod 105; the lifting mechanism 103 is arranged on one side of the reaction pool 101 for moving the vertical clamping mechanism 102 in a vertical direction to immerse the metal rod 105 into a predetermined depth in the electrolyte solution, and the metal rod 105 is immersed in the electrolyte solution. The metal rod 105 is sleeved in the capillary 106 of the vertical clamping mechanism 102, and the capillary 106 is perpendicular to the liquid surface of the electrolyte solution; the magnetic field coil 104 can be wound on the outer wall of the reaction cell 101 and connected to a DC power supply to generate a magnetic field, which can be used to rotate the electrolyte solution in the reaction cell 101. A cathode 107 is provided in the reaction cell 101, and the metal rod 105 and the cathode 107 are respectively connected to the positive and negative electrodes of another DC power supply, so that the part of the metal rod 105 immersed in the electrolyte solution undergoes an electrochemical reaction in the electrolyte solution to prepare a needle-shaped electrode for an ion trap.

[0028] exist Figure 1 , Figure 2 and Figure 3 In the device shown, when the capillary 106 is perpendicular to the surface of the electrolyte solution, the metal rod 105 sleeved in the capillary 106 is also perpendicular to the surface of the electrolyte solution. This ensures the straightness of the metal rod 105 immersed in the solution, avoids the needle tip of the prepared needle electrode from becoming crooked due to corrosion caused by the rod material not being immersed vertically in the solution, and makes the needle tip of the prepared needle electrode have better shape and symmetry.

[0029] In addition, Figure 1 , Figure 2 and Figure 3 In the device shown, when the electrolyte solution rotates under the action of the magnetic field generated by the magnetic field coil 104, the pH value around the metal rod 105 immersed in the electrolyte solution can be evenly distributed. In addition, the metal acid ions generated by the metal rod during the electrochemical reaction can be diffused into the solution, thereby avoiding the uneven surface of the needle tip of the prepared needle-shaped electrode caused by the metal acid ions generated by the rod during the electrochemical reaction adhering to and precipitating on the surface of the rod, so that the needle tip of the prepared needle-shaped electrode has better surface smoothness.

[0030] Therefore, the needle tip of the needle-shaped electrode prepared by the utility model has better surface smoothness, which helps to improve the stability of ion trapping and reduce the possibility of ion escape from the trap.

[0031] exist Figure 1, Figure 2 and Figure 3 In the device shown, the lifting mechanism 103 may include a slide rail arranged in the vertical direction and a slider capable of moving in the vertical direction along the slide rail, wherein the vertical clamping mechanism 102 may be fixed on the slider.

[0032] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the vertical clamping mechanism 102 can be configured as a syringe, and accordingly, the capillary 106 in the vertical clamping mechanism 102 can be configured as a needle of a syringe. In addition, the vertical clamping mechanism 102 can also include an electronic level (not shown), which can be set on the bottom end surface 111 of the syringe barrel of the syringe. When the capillary 106 is perpendicular to the liquid surface of the electrolyte solution, the electronic level can be used to record the verticality of the capillary 106. When the metal rod 105 is sleeved in the capillary, the electronic level can be used to measure the verticality of the capillary 106; if the measured verticality is inconsistent with the recorded verticality, the position and / or posture of the vertical clamping mechanism 102 is adjusted again until the measured verticality is consistent with the recorded verticality. This can effectively avoid the verticality deviation of the capillary during the operation of sleeved metal rod to the capillary.

[0033] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the metal rod 105 can pass through the center of the magnetic field coil 104 and be immersed in the electrolyte solution. Accordingly, the electrolyte solution can rotate around the metal rod 105 in the reaction cell 101. This helps to evenly distribute the pH value around the metal rod.

[0034] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the cathode 107 may be constructed as an annular member, and the metal rod 105 may be placed at the center of the inner circumference of the annular member to ensure that the portion of the metal rod immersed in the electrolyte solution can be uniformly corroded under the action of the electrochemical reaction.

[0035] exist Figure 1 , Figure 2 and Figure 3 In the device shown, a shielding barrel 108 may also be provided in the reaction pool 101. The shielding barrel 108 may be sleeved between the metal rod 105 and the inner circumference of the annular component to separate the bubbles generated on the cathode surface during the electrochemical reaction and prevent the liquid surface near the metal rod from being disturbed by the bubbles.

[0036] exist Figure 1 , Figure 2 and Figure 3In the device shown, a needle receiving barrel 109 may also be provided in the reaction pool 101. The needle receiving barrel 109 may be provided below the metal rod 105 to catch the needle-shaped electrode that is broken off from the needle tip and falls due to corrosion, so as to prevent the needle tip of the needle-shaped electrode from being damaged by touching the side wall of the reaction pool.

[0037] exist Figure 1 , Figure 2 and Figure 3 In the device shown, a spacer 110 for supporting the shielding barrel 108 and the annular member may be further provided in the reaction cell 101 to maintain the connectivity of the electrolyte solution in the reaction cell 101 .

[0038] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the voltage of the DC power supply for supplying electricity to the electrolyte solution (also called the corrosion voltage) can be set at 6.5 V, because the surface smoothness of the needle-shaped electrode prepared at this voltage is the best.

[0039] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the magnetic field coil 104 may be made of a material having excellent electrical conductivity such as, but not limited to, copper, etc. The capillary 106, the shield barrel 108 and the contact needle barrel 109 may be made of a corrosion-resistant material such as, but not limited to, stainless steel, etc.

[0040] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the metal rod 105 may be made of tungsten, the cathode 107 may be made of graphite, and the electrolyte solution may be made of sodium hydroxide. When the tungsten rod and graphite are electrified, the following reaction may occur in the sodium hydroxide solution.

[0041]

[0042] According to the above reaction, graphite as the cathode will produce a large amount of hydrogen in the form of bubbles that float to the surface of the liquid during the electrochemical reaction. The bubbles will cause a large disturbance in the liquid surface near the metal rod. Figure 1 , Figure 2 and Figure 3 In the device shown, the shielding barrel 108 sleeved between the metal rod 105 and the inner circumference of the annular component can separate the bubbles generated on the graphite surface during the electrochemical reaction, thereby preventing the liquid surface near the tungsten rod from being disturbed by the bubbles.

[0043] According to the above reaction, the tungsten rod as an anode will produce tungstate ions during the electrochemical reaction. The tungstate ions tend to adhere to the surface of the tungsten rod to hinder the corrosion reaction between the tungsten rod and the hydroxide ions in the solution. Figure 1, Figure 2 and Figure 3 In the device shown, under the action of the magnetic field of the magnetic field coil 104, the tungstate ions can be diffused into the solution as the solution rotates, effectively solving the problem of the uneven surface of the needle tip of the prepared needle-shaped electrode caused by the metal acid ions generated by the rod during the electrochemical reaction adhering to and precipitating on the surface of the rod. This makes the needle tip of the prepared needle-shaped electrode have better surface smoothness.

[0044] It can be seen that the needle-shaped electrode prepared by the utility model helps to improve the trapping effect of the ion trap and reduce the possibility of ions escaping from the trap. For quantum computers that use ion traps to store quantum information, manipulate quantum bits, and realize quantum entanglement and quantum communication, the reliability of quantum computers and the accuracy of calculation results can be further improved, thereby improving their overall performance.

[0045] While the present application has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various modifications and variations may be made to these embodiments without departing from the spirit and scope of the present application as defined by the appended claims.

Claims

1. A device for preparing an ion trap needle electrode, characterized in that: include: a first DC power supply and a second DC power supply; A reaction cell, arranged on the operating platform and used for containing an electrolyte solution; A vertical clamping mechanism, suspended above the reaction tank, for fixing and clamping the metal rod; A lifting mechanism, arranged at one side of the reaction tank, for moving the vertical clamping mechanism in a vertical direction to immerse the metal rod in the electrolyte solution to a predetermined depth, wherein the metal rod is sleeved in a capillary of the vertical clamping mechanism, and the capillary is perpendicular to the liquid surface of the electrolyte solution; A magnetic field coil is wound around the outer wall of the reaction cell and connected to a first DC power supply, and is used to generate a magnetic field, and the magnetic field is used to make the electrolyte solution rotate in the reaction cell. A cathode is provided in the reaction cell, and the metal rod and the cathode are respectively connected to the positive and negative electrodes of a second DC power supply, so that the part of the metal rod immersed in the electrolyte solution undergoes an electrochemical reaction in the electrolyte solution to prepare a needle-shaped electrode for an ion trap.

2. The device according to claim 1, characterized in that The lifting mechanism comprises a slide rail arranged in a vertical direction and a slider capable of moving in a vertical direction along the slide rail, wherein the vertical clamping mechanism is fixed on the slider.

3. The device according to claim 1, characterized in that The vertical clamping mechanism is configured as a syringe, and the capillary tube is configured as a needle of the syringe.

4. The device according to claim 3, characterized in that The vertical clamping mechanism also includes an electronic level, which is arranged on the bottom end surface of the syringe barrel of the syringe.

5. The device according to claim 1, characterized in that The metal rod passes through the center of the magnetic field coil and is immersed in the electrolyte solution.

6. The device according to claim 5, characterized in that The electrolyte solution rotates around the metal rod in the reaction cell.

7. The device according to claim 1, characterized in that The cathode is configured as a circular ring-shaped member, and the metal rod is placed at the center of the inner circumference of the circular ring-shaped member.

8. The device according to claim 7, characterized in that A shielding barrel is also provided in the reaction pool, and the shielding barrel is sleeved between the metal rod and the inner circumference of the annular component.

9. The device according to claim 8, characterized in that A needle receiving barrel is also arranged in the reaction pool, and the needle receiving barrel is arranged below the metal rod.

10. The device according to claim 8, characterized in that The reaction pool is also provided with a cushion block for supporting the shielding barrel and the annular component.

11. The device according to claim 1, characterized in that The voltage of the second DC power supply is set at 6.5V.

12. The device according to claim 1, characterized in that The metal rod is made of tungsten, the cathode is made of graphite, and the electrolyte solution is made of sodium hydroxide.

13. The device according to claim 1, characterized in that The field coil is made of copper.

14. The device according to claim 9, characterized in that The capillary tube, the shielding barrel and the needle barrel are all made of stainless steel.

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