CN214848987U - Near-field microwave conversion device for microwave-driven ions - Google Patents
Near-field microwave conversion device for microwave-driven ions Download PDFInfo
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- CN214848987U CN214848987U CN202121419492.XU CN202121419492U CN214848987U CN 214848987 U CN214848987 U CN 214848987U CN 202121419492 U CN202121419492 U CN 202121419492U CN 214848987 U CN214848987 U CN 214848987U
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Abstract
The utility model discloses a general near field microwave conversion equipment for microwave drive ion. The microstrip antenna comprises a microstrip feeder line, a first radiating unit, a first filtering unit, a second radiating unit, a second filtering unit and a third radiating unit. The microstrip feeder line, the first radiation unit, the first filter unit, the second radiation unit, the second filter unit and the third radiation unit are sequentially connected step by step according to the feed direction. The utility model provides a but the microwave actuating system of the multiple different ions of device adaptation effectively reduces microwave conversion equipment's quantity, volume and weight, improves the utilization ratio of microwave actuating ion system greatly.
Description
Technical Field
The utility model relates to a quantum computing technology field especially relates to a near field microwave conversion equipment for microwave drive ion.
Background
In the field of quantum computing, single quantum and double quantum logic gates may be constructed fromNear field microwave drive or laser drive. In microwave ion-driven systems, resonators, power amplifiers, electromagnetic waveguides, coupling elements, antennas, etc., are typically included, where an antenna is a key device for converting guided waves on a transmission line into near-field microwaves that drive ions. Generally, microwave drive systems employ switching devices of different frequencies due to ion differences, such as 25Mg+、43Ca+And 171Yb+The microwave drive frequencies of the ions are 1.789GHz, 3.2GHz and 12.6GHz, respectively, and therefore conversion devices of corresponding frequencies are required, and a common solution is to design a conversion device for each microwave drive system, the conversion device being generally in the form of a horn-mouth-face antenna. The antenna of the horn mouth surface is a three-dimensional structure, so that the occupied volume space is large. In addition, the size of the antenna is inversely proportional to the wavelength, and the size of the antenna is relatively large for the antenna operating in a low frequency band, for example, the size of a standard horn aperture antenna (gain is 10dB) operating at a frequency of 1.789GHZ is 210mm × 209mm × 154 mm. Therefore, the existing near-field microwave conversion device based on the horn antenna has large volume and heavy weight, and the development and commercial popularization of the quantum computing technology are seriously limited.
SUMMERY OF THE UTILITY MODEL
In order to compensate the technical defect, the utility model provides a near field microwave conversion equipment for microwave drive ion. The device can be adapted to microwave drive systems of various ions, the number, the volume and the weight of the microwave conversion devices can be effectively reduced, and the utilization rate of the microwave drive ion system is greatly improved.
According to the utility model discloses, a near field microwave conversion equipment for microwave drive ion is provided, including microstrip feeder, first radiating element, first filter cell, second radiating element, second filter cell and third radiating element. The microstrip feeder line, the first radiating unit, the first filtering unit, the second radiating unit, the second filtering unit and the third radiating unit are all composed of a dielectric substrate and corresponding metal patches. The microstrip feeder line, the first radiation unit, the first filter unit, the second radiation unit, the second filter unit and the third radiation unit are sequentially connected step by step according to a feed direction, and the feed direction is from the microstrip feeder line to the third radiation unit.
Preferably, the first radiating unit radiates an electromagnetic wave with an operating frequency f1 outwards to drive ions in the ion trap to generate energy level transition in a near field, and the resonant operating frequency is f 1; the second radiation unit radiates electromagnetic waves with the working frequency f2 outwards to drive ions in the ion trap in a near field mode, so that energy level transition occurs, and the resonant working frequency is f 2; the third radiation unit radiates electromagnetic waves with the working frequency f3 outwards to drive ions in the ion trap in a near field mode, so that energy level transition occurs, and the resonant working frequency is f 3; the operating frequencies f1, f2, f3 are the desired frequencies to drive the corresponding ions in the ion trap, and f1< f2< f 3.
Preferably, the first filtering unit switches on the current signals with the working frequencies f2 and f3 and blocks the current signal with the working frequency f 1; the second filter unit conducts the current signal with the working frequency f3 and blocks the current signals with the working frequencies f1 and f 2.
Preferably, the internal structure of the first radiating element, the second radiating element and the third radiating element may be a half-wave dipole microstrip resonator in a bow-tie shape, a rectangular shape, or the like.
Preferably, the first filtering unit and the second filtering unit may be a high-pass filter of a microstrip structure.
Preferably, the dimension of the near-field microwave conversion device for microwave-driven ions is 1.5 λ × 2 λ × h, λ is the effective wavelength of the lowest frequency, h is the thickness of the dielectric substrate, and h is generally not more than 2 mm.
Preferably, a plurality of single conversion devices may be connected in parallel to increase conversion gain.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model can realize resonance at a plurality of single frequency points, and the working frequencies are not interfered with each other, thereby ensuring higher gain and effectively converting near field microwave;
the utility model has strong universality, and can meet the requirements of near field microwave conversion driven by different ions;
the utility model discloses can reduce microwave conversion equipment's quantity, single microwave conversion equipment's quantity volume is littleer, only one percent of ordinary antenna, and occupation space is little, and the quality is light.
Drawings
Fig. 1 is a schematic diagram of a near-field microwave conversion device according to an embodiment.
Fig. 2 is a schematic diagram of the amplitude-frequency characteristic of the first filtering unit.
Fig. 3 is a schematic diagram of the amplitude-frequency characteristic of the second filtering unit.
Fig. 4 is a schematic diagram of a near-field microwave conversion device according to a second embodiment to a fourth embodiment.
Fig. 5 is a schematic diagram of an array combination of three microwave conversion devices.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
According to the utility model provides a near field microwave conversion equipment for microwave drive ion can include microstrip feeder, first radiating element, first filter unit, second radiating element, second filter unit and third radiating element; the microstrip feeder line, the first radiating unit, the first filtering unit, the second radiating unit, the second filtering unit and the third radiating unit are all composed of a dielectric substrate and corresponding metal patches. The microstrip feeder line, the first radiation unit, the first filter unit, the second radiation unit, the second filter unit and the third radiation unit are connected in sequence according to a feed direction.
Example one
Specifically, as shown in fig. 1, when a current signal transmitted by the microstrip feeder passes through the first radiating element, resonance with a working frequency f1 occurs, and an electromagnetic wave with a working frequency f1 is radiated outwards to drive ions in the ion trap in a near field, so that energy level transition occurs; when the filter passes through the first filtering unit, the amplitude-frequency characteristic is as shown in fig. 2, the current signals with the working frequencies f2 and f3 are conducted, and the current signal with the working frequency f1 is blocked; when the ions pass through the second radiation unit, resonance with the working frequency f2 occurs, electromagnetic waves with the working frequency f2 are radiated outwards to drive the ions in the ion trap in a near field, and energy level transition occurs; when the current passes through the second filtering unit, the amplitude-frequency characteristic is as shown in fig. 3, the current signal with the working frequency f3 is conducted, and the current signals with the working frequencies f1 and f2 are blocked; when the electromagnetic wave passes through the third radiation unit, resonance with the working frequency f3 occurs, and electromagnetic waves with the working frequency f2 are radiated outwards to drive ions in the ion trap in a near field so that energy level transition occurs. Operating frequency f1< f2< f 3.
This embodiment realizes that each single frequency point realizes the resonance, mutual noninterference between each operating frequency, can satisfy different ion drive's near field microwave conversion demand to microwave conversion equipment adopts half-wavelength dipole's accurate yagi microstrip structure, and its radiation long limit only has 1/5 on the longest limit of horn antenna, and the size reduces greatly, and occupation space is little, and the quality is light.
Example two
As shown in fig. 4, when a current signal transmitted by the microstrip feeder passes through the first radiating element, resonance with a working frequency f1 occurs, and an electromagnetic wave with a working frequency f1 is radiated outwards to drive ions in the ion trap in a near field, so that energy level transition occurs; when the current passes through the first filtering unit, the amplitude-frequency characteristic is as shown in fig. 2, the current signal with the working frequency f2 is conducted, and the current signal with the working frequency f1 is blocked; when the ions pass through the second radiation unit, resonance with the working frequency f2 occurs, and electromagnetic waves with the working frequency f2 are radiated outwards to drive the ions in the ion trap in a near field, so that energy level transition occurs.
EXAMPLE III
When a current signal transmitted by the microstrip feeder passes through the first radiation unit, resonance with the working frequency of f1 occurs, and electromagnetic waves with the working frequency of f1 are radiated outwards to drive ions in the ion trap in a near field, so that energy level transition occurs; when the current passes through the first filtering unit, the amplitude-frequency characteristic is as shown in fig. 3, the current signal with the working frequency f3 is conducted, and the current signal with the working frequency f1 is blocked; when the ions pass through the second radiation unit, resonance with the working frequency f3 occurs, and electromagnetic waves with the working frequency f2 are radiated outwards to drive the ions in the ion trap in a near field, so that energy level transition occurs.
Example four
When a current signal transmitted by the microstrip feeder passes through the first radiation unit, resonance with the working frequency of f2 occurs, and electromagnetic waves with the working frequency of f2 are radiated outwards to drive ions in the ion trap in a near field, so that energy level transition occurs; when the current passes through the first filtering unit, the amplitude-frequency characteristic is as shown in fig. 3, the current signal with the working frequency f3 is conducted, and the current signal with the working frequency f2 is blocked; when the ions pass through the second radiation unit, resonance with the working frequency f3 occurs, and electromagnetic waves with the working frequency f3 are radiated outwards to drive the ions in the ion trap in a near field, so that energy level transition occurs.
EXAMPLE five
As shown in fig. 5, three single microwave converters may be combined to form a three-unit microwave converter for improving the conversion gain. The longest edge of the three unit microwave conversion devices after array is larger than the long edge of the horn antenna, but the sizes of the other two dimensions are obviously smaller than that of the horn antenna. Size of three-unit microwave conversion device after array formation is 5 lambda1×2.5λ1Xh, for example, using FR-4 board, the effective wavelength at 1.789GHz is about 80mm, the size is 400mm x 160mm x 2mm, compared with the size of 210mm x 209mm x 154mm of a standard horn antenna, and the volume is about 1/50, and the standard horn antenna can only realize resonance at one frequency point (1.789 GHz). Whereas the 3.2GHz standard horn size is about (191mm 112mm 91mm) and the 12.6GHz standard horn size is about (48mm 38 mm). If all adopt horn antenna in near field drive microwave device the inside, then the size that three horn antenna combined is bigger, and the protection distance of preventing the interference between the antenna in addition, its volume size (210mm 520mm 91mm) will be far away the utility model discloses a device. The gain of the microwave conversion device after the simultaneous array combination is not smallThe gain of the horn antenna is increased by at least 4dB compared to a single conversion device.
The utility model relates to a rationally, the commonality is strong, and is small, can satisfy different ion drive's near field microwave conversion demand.
The above description has been made of specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A near-field microwave conversion apparatus for microwave-driven ions, comprising: a microstrip feeder line, a first radiation unit, a first filter unit, a second radiation unit, a second filter unit and a third radiation unit,
the microstrip feeder line, the first radiation unit, the first filter unit, the second radiation unit, the second filter unit and the third radiation unit are sequentially connected step by step according to a feed direction, and the feed direction is from the microstrip feeder line to the third radiation unit.
2. A near field microwave converting apparatus according to claim 1, wherein the first radiating element resonates at an operating frequency f1, f1 is a driving frequency of ions in the ion trap, and electromagnetic waves of an operating frequency f1 are radiated to the outside to drive the ions in the ion trap in the near field.
3. A near field microwave converting apparatus according to claim 1, wherein the second radiating element resonates at an operating frequency f2, f2 is a driving frequency of ions in the ion trap, and electromagnetic waves of an operating frequency f1 are radiated to the outside to drive the ions in the ion trap in the near field.
4. A near field microwave converting apparatus according to claim 1, wherein the third radiating element resonates at an operating frequency f3, f3 is a driving frequency of ions in the ion trap, and electromagnetic waves of an operating frequency f1 are radiated to the outside to drive the ions in the ion trap in the near field.
5. A near field microwave converting device according to claim 1, wherein the first filter unit switches on the current signals of the operating frequencies f2 and f3 and switches off the current signal of the operating frequency f 1.
6. A near field microwave converting device according to claim 1, wherein the second filtering unit switches on the current signal of the operating frequency f3 and switches off the current signals of the operating frequencies f1 and f 2.
7. A near field microwave conversion device according to claim 1, wherein the microstrip feed line, the first radiating element, the first filtering element, the second radiating element, and the second filtering element are each composed of a dielectric substrate and a corresponding metal patch.
8. A near field microwave conversion device according to any of claims 1 to 7, wherein the internal structure of the first, second, and third radiation elements is a bow-tie shaped half-wave dipole microstrip resonator.
9. A near field microwave conversion device according to any of claims 1 to 7, characterized in that the first filter unit and the second filter unit are high pass filters of microstrip structure.
10. A near field microwave conversion device as claimed in any of claims 1 to 9, wherein N near field microwave conversion devices may be grouped in parallel and in the same direction, where N is an integer greater than 1, and the N feed strip buses are connected to a point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121419492.XU CN214848987U (en) | 2021-06-25 | 2021-06-25 | Near-field microwave conversion device for microwave-driven ions |
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| CN202121419492.XU CN214848987U (en) | 2021-06-25 | 2021-06-25 | Near-field microwave conversion device for microwave-driven ions |
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