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 light source is used for adjusting the position and / or posture of the vertical clamping mechanism until the metal bar clamped by the vertical clamping mechanism is perpendicular to the liquid level of the electrolyte solution; the lifting mechanism is used for immersing the metal rod into the electrolyte solution by a preset depth, 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, so that the part, immersed into 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 needle tip of the prepared needle-shaped electrode is inclined due to the fact that a bar material is not vertically immersed into a solution for corrosion is effectively solved, so that the needle tip of the prepared needle-shaped electrode has better shape and symmetry.

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 its tip shape and surface smoothness 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 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 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 downward, 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 downward on the operating platform to form a central bright spot that coincides with the center of the halo; 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 the capillary, 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 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 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 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.

[0011] 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.

[0012] Preferably, a needle receiving barrel is further provided in the reaction pool, and the needle receiving barrel is provided below the metal rod.

[0013] Preferably, a pad for supporting the shielding barrel and the annular component is also provided in the reaction pool.

[0014] Preferably, the voltage of the second DC power supply is set at 6.5V.

[0015] Preferably, the metal rod is made of tungsten, the cathode is made of graphite, and the electrolyte solution is made of sodium hydroxide.

[0016] Preferably, the capillary tube, the shielding barrel and the needle barrel are all made of stainless steel.

[0017] The utility model can effectively solve the problem that the tip of the prepared needle-shaped electrode becomes crooked due to the rod material not being vertically immersed in the solution for corrosion, so that the tip of the prepared needle-shaped electrode has a better shape and symmetry. This high-precision needle-shaped electrode helps to improve the confinement effect of the ion trap and reduce the possibility of ions escaping from the trap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above-mentioned objects and features of the present invention will become more clear through the following description in conjunction with the accompanying drawings.

[0019] Figure 1 The structure diagram of the device for preparing the ion trap needle-shaped electrode of the utility model is schematically shown.

[0020] Figure 2 The cross-sectional view of the device for preparing the ion trap needle electrode of the utility model is schematically shown.

[0021] Figure 3 The exploded view of the device for preparing the ion trap needle electrode of the utility model is schematically shown. DETAILED DESCRIPTION

[0022] In a needle electrode ion trap, the smaller and more symmetrical the needle tip shape 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 control the movement of ions more accurately, so that the ions can be trapped in the ion trap more stably, thereby reducing the possibility of ions escaping from the trap. In order to prepare a needle electrode with a good and symmetrical needle tip shape, the metal rod must be placed perpendicular to the surface of the corrosive solution. When the metal rod is not placed perpendicular to the surface of the corrosive solution, the asymmetry of the metal acid ion concentration distributed around the metal rod increases, which will be detrimental to the symmetry of the needle tip of the needle electrode. In addition, as the corrosion proceeds, the connection between the upper and lower parts of the metal rod will become thinner and thinner. Under the action of gravity, the lower section of the metal rod will deviate to the vertical position, which will cause the needle tip of the needle electrode to become crooked. To this end, the utility model provides a device for preparing an ion trap needle electrode.

[0023] Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

[0024] Reference Figure 1 , Figure 2 and Figure 3The 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 and a lifting mechanism 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 light source 103 can be suspended above the vertical clamping mechanism 102 for emitting a light beam perpendicular to the operating platform downward, 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 vertical clamping mechanism 102. The capillary 106 in the holding mechanism 102 can be projected downward until the central bright spot formed on the operating platform coincides with the center of the halo; the lifting mechanism 104 is arranged on one side of the reaction cell 101, and is used to move the vertical clamping mechanism 102 in the vertical direction to immerse the metal rod 105 into the electrolyte solution to a predetermined depth, the metal rod 105 is sleeved in the capillary 106, and a cathode 107 is arranged 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.

[0025] 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 106 to form a central bright spot that coincides with the center of the halo, the capillary 106 arranged in the vertical clamping mechanism 102 is perpendicular to the operating platform, and correspondingly, the metal rod 105 sleeved in the capillary 106 is also perpendicular to the operating platform. This ensures the alignment 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.

[0026] Therefore, the utility model effectively solves the problem that the needle tip of the prepared needle-shaped electrode becomes crooked due to the rod material not being vertically immersed in the solution for corrosion.

[0027] 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.

[0028] exist Figure 1 , Figure 2 and Figure 3In 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 arranged on the bottom end surface 111 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 106 onto the operating platform coincides with the center of the halo, 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. 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.

[0029] 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.

[0030] 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.

[0031] exist Figure 1 , Figure 2 and Figure 3 In 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.

[0032] 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 .

[0033] exist Figure 1 , Figure 2 and Figure 3In 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.

[0034] exist Figure 1 , Figure 2 and Figure 3 In the illustrated device, the capillary tube 106, the shield barrel 108, and the contact barrel 109 may be made of corrosion-resistant materials such as, but not limited to, stainless steel.

[0035] 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.

[0036]

[0037] 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.

[0038] 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.

[0039] 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: 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 is arranged on one side of the reaction cell and is used to move the vertical clamping mechanism in a vertical direction to immerse the metal rod to a predetermined depth in the electrolyte solution, wherein the metal rod is sleeved in the capillary. 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 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 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.

6. The device according to claim 5, 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.

7. The device according to claim 6, 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.

8. The device according to claim 6, characterized in that The reaction pool is also provided with a cushion block for supporting the shielding barrel and the annular component.

9. 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.

10. The device according to claim 7, characterized in that The capillary tube, the shielding barrel and the needle barrel are all made of stainless steel.

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