Device for preparing needle-shaped electrode of ion trap
By designing a device including a DC power supply, a reaction cell, a vertical clamping mechanism and a magnetic field coil, the problems of needle electrode tip shape and surface smoothness are solved, and a more stable ion trap imprisonment effect is achieved.
Patent Information
- Application Number
- CN202420701093.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-08
AI Technical Summary
The existing needle electrode preparation process is difficult to ensure the symmetry of the needle tip shape and surface smoothness, which affects the captivity performance of the ion trap.
A device including a DC power supply, a reaction tank, a vertical clamping mechanism, a light source, a lifting mechanism and a magnetic field coil is designed to ensure the symmetrical shape of the needle tip by clamping the metal rod vertically and adjusting its corrosion position and posture in the electrolyte solution. and the pH value is uniformly distributed through the magnetic field to prevent precipitation of metallic acid ions.
The needle tip shape and surface smoothness of the needle electrode are improved, the stability and captivity effect of the ion trap are enhanced, and the possibility of ion escape is reduced.
Smart Images
Figure CN222160453U_ABST
Abstract
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 electrode is an important component in the ion trap, and 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 electrode to ensure that the needle 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 light source, suspended above the vertical clamping mechanism and used for emitting a light beam perpendicular to the operating platform downwards, the light beam being used for adjusting the position and / or posture of the vertical clamping mechanism until the light beam emitted by the light source passes through a capillary in the vertical clamping mechanism and is projected downwards onto the operating platform to form a central bright spot that coincides with the center of the halo; a lifting mechanism, A capillary is arranged on one side of the reaction pool, and is used to move the vertical clamping mechanism in the vertical direction to immerse the metal rod to a predetermined depth in the electrolyte solution, and the metal rod is sleeved in the capillary; a magnetic field coil is wound on the outer wall of the reaction pool 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 pool, wherein a cathode is provided in the reaction pool, 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.
[0007] Preferably, the lifting mechanism comprises a slide rail arranged in the vertical direction and an upper slider and a lower slider capable of moving in the vertical direction along the slide rail, wherein the light source is fixed on the upper slider and the vertical clamping mechanism is fixed on the lower 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 can not only ensure that the metal rod is immersed in the electrolyte solution perpendicular to the liquid surface for corrosion, thus preventing the needle tip of the needle electrode from becoming crooked, but also ensure that the metal rod is always corroded in a corrosion solution with a uniform pH value distribution, thus preventing the metal acid radical ions generated by the metal rod during the corrosion process from adhering and precipitating on the surface of the needle electrode. Therefore, the needle tip of the needle electrode prepared by the utility model not only has a better shape and symmetry but also has a better surface smoothness. This high-precision needle 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 smaller and more symmetrical the needle tip of the needle electrode is, the more concentrated the electric field in the trap will be near the needle tip. This concentrated electric field helps to more accurately control the movement of ions, so that ions can be more stably trapped in the ion trap, thereby reducing the possibility of ions escaping from the trap. In addition, the higher the smoothness of the needle tip surface of the needle electrode, 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 trapping effect of the ion trap. 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 light source 103, a lifting mechanism 104 and a magnetic field coil 105, 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 106; the light source 103 can be suspended above the vertical clamping mechanism 102 for emitting a light beam perpendicular to the operating platform downwards, and the light beam can be used to adjust the position and / or posture of the vertical clamping mechanism 102 until the light beam emitted by the light source 103 passes through the capillary 107 in the vertical clamping mechanism 102 and can be projected downwards onto the operating platform to form a magnetic field. The reaction cell 101 is provided with a cathode 108, and the metal rod 106 and the cathode 108 are respectively connected to the positive and negative electrodes of another DC power supply, so that the part of the metal rod 106 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 light emitted by the light source 103 is projected downward onto the operating platform through the capillary 107 to form a central bright spot that coincides with the center of the halo, the capillary 107 arranged in the vertical clamping mechanism 102 is perpendicular to the operating platform, and correspondingly, the metal rod 106 sleeved in the capillary 107 is also perpendicular to the operating platform. This ensures the alignment of the metal rod 106 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 3In the device shown, when the electrolyte solution rotates under the action of the magnetic field generated by the magnetic field coil 105, the pH value around the metal rod 106 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 not only has a better shape and symmetry, but also has a 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 104 may include a slide rail arranged in the vertical direction and an upper slider and a lower slider capable of moving in the vertical direction along the slide rail, wherein the light source 103 may be fixed on the upper slider and the vertical clamping mechanism 102 may be fixed on the lower 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 107 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 arranged on the bottom end surface 112 of the syringe barrel of the syringe. When the central bright spot formed by the light emitted by the light source 103 projecting downward through the capillary 107 on the operating platform coincides with the center of the halo, the electronic level can be used to record the verticality of the capillary 107. When the metal rod 106 is sleeved in the capillary, the electronic level can be used to measure the verticality of the capillary 107; 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. In this way, the verticality of the capillary can be effectively prevented from being offset in the verticality during the operation of sleeved metal rod on the capillary.
[0033] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the metal rod 106 can pass through the center of the magnetic field coil 105 and be immersed in the electrolyte solution. Accordingly, the electrolyte solution can rotate around the metal rod 106 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 108 may be constructed as an annular member, and the metal rod 106 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 109 may also be provided in the reaction pool 101. The shielding barrel 109 may be sleeved between the metal rod 106 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 3 In the device shown, a needle receiving barrel 110 may also be provided in the reaction pool 101. The needle receiving barrel 110 may be provided below the metal rod 106 to catch the needle-shaped electrode that is broken off from the needle tip and falls due to corrosion, thereby preventing 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 111 for supporting the shielding barrel 109 and the annular member may be further provided in the reaction cell 101 to maintain the electrolyte solution in the reaction cell 101 in communication.
[0038] exist Figure 1 , Figure 2 and Figure 3 In the device shown, the voltage of another DC power source for supplying electricity to the electrolyte solution (also called 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 105 may be made of a material having excellent electrical conductivity such as, but not limited to, copper, etc. The capillary 107, the shielding barrel 109 and the contact needle barrel 110 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 106 may be made of tungsten, the cathode 108 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 109 sleeved between the metal rod 106 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 105, the tungstate ions can be diffused into the solution as the solution rotates.
[0044] It can be seen that the utility model can not only ensure that the metal rod is immersed in the electrolyte solution perpendicular to the liquid surface for corrosion, thereby preventing the needle tip of the needle electrode from becoming crooked, but also ensure that the metal rod is always corroded in a corrosion solution with a uniform pH value distribution, thereby preventing the metal acid radical ions generated by the metal rod during the corrosion process from adhering and precipitating on the surface of the needle electrode. Therefore, the needle tip of the needle electrode prepared using the utility model not only has a better shape and symmetry but also has a better surface smoothness. This high-precision needle electrode helps to improve the stability of ion trapping and reduce the possibility of ion escape from the trap.
[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 light source is suspended above the vertical clamping mechanism and is used to emit a light beam perpendicular to the operating platform downwards, wherein the light beam is used to adjust the position and / or posture of the vertical clamping mechanism until the light beam emitted by the light source passes through the capillary in the vertical clamping mechanism and is projected downwards onto the operating platform to form a central bright spot that coincides with the center of the halo; a lifting mechanism, disposed on one side of the reaction cell, 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 the capillary; 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 an upper slider and a lower slider which can move in the vertical direction along the slide rail, wherein the light source is fixed on the upper slider and the vertical clamping mechanism is fixed on the lower 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.