阅读说明：本技术 基于微波共面波导的光子态微波量子态转换器及系统 (Photon state microwave quantum state converter and system based on microwave coplanar waveguide ) 是由 不公告发明人 于 2019-09-06 设计创作，主要内容包括：本发明涉及一种基于微波共面波导的光子态微波量子态转换器及系统,具体为涉及光学器械领域,本申请通过在“L”形中心导体长端的一侧设置有石墨烯层,石墨烯层的一端延伸伸出中心导体的末端,并且将光波导设置在该石墨烯远离中心导体的一侧,光波导的位置与石墨烯的位置相对设置,固定电极板设置在中心导体远离石墨烯层的一侧,且固定电极板与石墨烯层的位置相对,当光波导中传递出光子的时候,光子击打在石墨烯层上,该石墨烯层和该固定电极板之间形成了一个电容,由于该石墨烯层在该光子的作用下发生振动,使得该电容的电压发生改变,进而在电容效应下该电容之间产生一个微波量子,从而实现了光子到微波量子的转化,并且该转换器结构简单。(The present invention relates to a kind of photon state microwave quantum state converter and system based on microwave coplanar waveguide, specially it is related to optical instrument field, the application is by being provided with graphene layer in the side at the long end of L shape center conductor, one end of graphene layer extends the end for stretching out center conductor, and side of the graphene far from center conductor is arranged in optical waveguide, the position of optical waveguide and the position of graphene are oppositely arranged, side of the centrally disposed conductor of fixed plate electrode far from graphene layer, and fixed plate electrode is opposite with the position of graphene layer, when passing out photon in optical waveguide, photon strikes on graphene layer, a capacitor is formd between the graphene layer and the fixed plate electrode, since the graphene layer vibrates under the action of the photon, so that the voltage of the capacitor changes, and then in capacity effect A microwave quantum is generated between the lower capacitor, to realize the conversion of photon to microwave quantum, and the converter structure is simple.)

1. a kind of photon state microwave quantum state converter based on microwave coplanar waveguide, which is characterized in that the converter includes: Optical waveguide, graphene layer, center conductor and fixed plate electrode；

The center conductor is L-shaped, and the graphene layer, institute are pasted on the side at the long end of the L shape center conductor State graphene layer one end extend the center conductor long end end, optical waveguide setting is remote in the graphene layer Side from the center conductor, and the part extended with the graphene layer is oppositely arranged, the fixed plate electrode setting exists Side of the center conductor far from the graphene layer, and be oppositely arranged with the graphene layer.

2. the photon state microwave quantum state converter according to claim 1 based on microwave coplanar waveguide, which is characterized in that The optical waveguide is optical fiber.

3. the photon state microwave quantum state converter according to claim 2 based on microwave coplanar waveguide, which is characterized in that The optical fiber is not more than 200 nanometers at a distance from the graphene layer.

4. the photon state microwave quantum state converter according to claim 2 based on microwave coplanar waveguide, which is characterized in that The photon state microwave quantum state converter further includes metal layer, and the metal layer is arranged in the graphene layer close to the light Fine side.

5. the photon state microwave quantum state converter according to claim 4 based on microwave coplanar waveguide, which is characterized in that The material of the metal layer includes: at least one of gold, silver or molybdenum precious metal material.

6. the photon state microwave quantum state converter according to claim 2 based on microwave coplanar waveguide, which is characterized in that Multiple metal bumps are arranged close to the side of the graphene layer in the fixed plate electrode.

7. the photon state microwave quantum state converter according to claim 2 based on microwave coplanar waveguide, which is characterized in that The center conductor opens up hole close to the position of the graphene layer.

8. the photon state microwave quantum state converter according to claim 7 based on microwave coplanar waveguide, which is characterized in that The photon state microwave quantum state converter further includes vibration level, and the vibration level is coated in the hole that the center conductor leans on On hole.

9. the photon state microwave quantum state converter according to claim 8 based on microwave coplanar waveguide, which is characterized in that The material of the vibration level is graphene.

10. a kind of photon state microwave quantum state converter system based on microwave coplanar waveguide, which is characterized in that the photon state Microwave quantum state converter system includes: light source and photon state microwave quantum state described in any one of claim 1-9 conversion The described and one end of the optical waveguide far from the fixed plate electrode is arranged in device, the light source.

Technical field

The present invention relates to optical instrument fields, in particular to a kind of photon state microwave based on microwave coplanar waveguide Quantum state converter and system.

Background technique

Recently as the rapid development of quantum information technology, the various applications based on quantum effect are continued to bring out, by light It is one of current newest research topic that son, which is converted into quantum, wherein photon is the carrier of electromagnetic radiation, and in quantum field theory Photon is considered as medium of electromagnetic interaction, and microwave quantum is the minimum unit of microwave.

Summary of the invention

It is an object of the present invention in view of the deficiency of the prior art, provide a kind of based on microwave coplanar waveguide Photon state microwave quantum state converter and system, to solve converter structure complexity in the prior art, the low problem of stability.

To achieve the above object, technical solution used in the embodiment of the present invention is as follows:

In a first aspect, the embodiment of the invention provides a kind of photon state microwave quantum state converter based on microwave coplanar waveguide, Converter includes: optical waveguide, graphene layer, center conductor and fixed plate electrode；

Center conductor is L-shaped, and graphene layer, one end of graphene layer are pasted on the side at the long end of L shape center conductor Extend the end at the long end of center conductor, side of the graphene layer far from center conductor, and and graphene is arranged in optical waveguide The part that layer extends is oppositely arranged, side of the centrally disposed conductor of fixed plate electrode far from graphene layer, and and graphene layer It is oppositely arranged.

Optionally, which is optical fiber.

Optionally, which is not more than 200 nanometers at a distance from graphene layer.

Optionally, which further includes metal layer, and metal layer setting is close in graphene layer The side of optical fiber.

Optionally, the material of the metal layer includes: at least one of gold, silver or molybdenum precious metal material.

Optionally, which is arranged multiple metal bumps close to the side of graphene layer.

Optionally, which opens up hole close to the position of graphene layer.

Optionally, which further includes vibration level, and vibration level is coated in what center conductor leaned on On hole.

Optionally, the material of the vibration level is graphene.

Second aspect, the embodiment of the invention provides another kinds to be turned based on the photon state microwave quantum state of microwave coplanar waveguide Transformer system, photon state microwave quantum state converter system include: that the photon state of light source and above-mentioned first aspect any one is micro- One end with optical waveguide far from fixed plate electrode is arranged in wave quantum state converter, light source.

The beneficial effects of the present invention are:

By being provided with graphene layer in the side at the long end of L shape center conductor, one end of graphene layer extends to be stretched out the application The end of the center conductor, and side of the graphene far from center conductor, the position of the optical waveguide is arranged in optical waveguide It is oppositely arranged with the position of the graphene, side of the centrally disposed conductor of the fixed plate electrode far from graphene layer, and this is solid Fixed electrode plate is opposite with the position of graphene layer, and when passing out photon in the optical waveguide, which is struck in the graphite On alkene layer, a capacitor is formd between the graphene layer and the fixed plate electrode, since the graphene layer is in the work of the photon It is vibrated with lower, so that the voltage of the capacitor changes, and then is generating a microwave under capacity effect between the capacitor Quantum, so that the conversion of photon to microwave quantum is realized, and the converter structure is simple, due to converter structure letter Single, a microwave quantum can be exported by inputting a photon, so the converter stability is high.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.

Fig. 1 is a kind of photon state microwave quantum state converter based on microwave coplanar waveguide that one embodiment of the invention provides Structural schematic diagram；

Fig. 2 is another photon state microwave quantum state converter based on microwave coplanar waveguide that one embodiment of the invention provides Structural schematic diagram；

Fig. 3 is another photon state microwave quantum state converter based on microwave coplanar waveguide that one embodiment of the invention provides Structural schematic diagram.

Icon: 10- optical waveguide；20- center conductor；30- graphene layer；40- fixed plate electrode；50- metal layer；60- vibration Dynamic layer.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented The component of example can be arranged and be designed with a variety of different configurations.

Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage Solution is indication or suggestion relative importance.

In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical" It is complete horizontal, but can be slightly tilted.

In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition State the concrete meaning of term in the present invention.

Fig. 1 is a kind of photon state microwave quantum state converter based on microwave coplanar waveguide that one embodiment of the invention provides Structural schematic diagram, as shown in Figure 1, the embodiment of the present application provides a kind of photon state microwave quantum state based on microwave coplanar waveguide Converter, converter include: optical waveguide 10, graphene layer 30, center conductor 20 and fixed plate electrode 40；Center conductor 20 is in L shape is pasted with graphene layer 30 on the side at the long end of L shape center conductor 20, during one end of graphene layer 30 is extended Side of the graphene layer 30 far from center conductor 20, and and graphene is arranged in the end at the long end of heart conductor 20, optical waveguide 10 The part that layer 30 extends is oppositely arranged, centrally disposed side of the conductor 20 far from graphene layer 30 of fixed plate electrode 40, and with Graphene layer 30 is oppositely arranged.

The center conductor 20 is L-shaped, which includes long end and short end, the L shape center conductor 20 Can be integrally formed setting, be also possible to be welded together by long end and short end, which is attached in the L shape The end at the long end of heart conductor 20, and a part of the graphene layer 30 extends the end at the long end of L shape center conductor 20, it should The side of the graphene layer 30 far from the center conductor 20, and the setting position of the optical waveguide 10 and the stone is arranged in optical waveguide 10 The position of the prominent center conductor 20 of black alkene layer 30 is opposite, so that can directly strike from the photon that the optical waveguide 10 issues On the graphene layer 30, which is arranged in the side of the center conductor 20 far from the graphene layer 30, and this is solid The setting position of fixed electrode plate 40 and the position of the graphene layer 30 are oppositely arranged, so that the prominent center of the graphene layer 30 is led A capacitor is formed between the part of body 20 and the fixed plate electrode 40；After the optical waveguide 10 issues photon, photon is direct Impact is on the graphene layer 30, so that the graphene layer 30 vibrates, when the graphene layer 30 vibrates, The distance between the capacitor formed between the graphene layer 30 and the fixed plate electrode 40 can change, to change the capacitor Voltage, a microwave quantum can be generated under the action of capacity effect, between the capacitor, to realize from photon to microwave The conversion of quantum, it should be noted that the specific thickness of the center conductor 20 is configured according to the actual situation, is not limited herein Fixed, the area of the fixed plate electrode 40 and 30 corresponding position of graphene layer is configured according to the actual situation, is not limited herein Fixed, which can be planar optical waveguide 10, be also possible to optical fiber, set according to the actual situation with staff's experience It is fixed, it is not limited here.

Optionally, optical waveguide 10 is optical fiber.

Optical fiber projects photon perpendicular to the fiber end face, and the optical waveguide 10 in the application can choose optical fiber, The side of the center conductor 20 far from the fixed plate electrode 40, the exit portal of the optical fiber and the graphene layer 30 is arranged in optical fiber Relatively, so that the photon of the fiber exit directly strikes on the graphene layer 30.

Optionally, optical fiber is not more than 200 nanometers at a distance from graphene layer 30.

In order to enable photon irradiation realizes that near field excites on the graphene layer 30, and reduce the illumination of the sending of optical waveguide 10 The process for needing to focus on the graphene layer 30 is penetrated, then the optical fiber is not more than 200 nanometers at a distance from the graphene layer 30, In In practical application, which is set with graphene layer 30 with specific reference to actual needs and staff's experience, herein not It limits, it is preferred that the graphene layer 30 can be at a distance from the optical fiber are as follows: 150 nanometers, 100 nanometers or 80 nanometers.

Fig. 2 is another photon state microwave quantum state conversion based on microwave coplanar waveguide that one embodiment of the invention provides The structural schematic diagram of device, as shown in Fig. 2, optionally, photon state microwave quantum state converter further includes metal layer 50, metal layer 50 Graphene layer 30 is set close to the side of optical fiber.

In order to enable the graphene layer 30 preferably absorbs photon, and certain vibration is generated after absorption, Then one layer of metal layer 50 can be set close to the side of the optical fiber in the graphene layer 30, which can reinforce the graphite The absorption of 30 pairs of photon of alkene layer, reduces the loss of photon.

Optionally, the material of metal layer 50 includes: at least one of gold, silver or molybdenum precious metal material.

Since noble metal has good photoelectric effect, then noble metal material can be set by the material of the metal layer 50 Material, can choose gold, silver in precious metal material or molybdenum material is the material of metal layer 50, in general, the material of the metal layer 50 Material can be one of gold, silver or molybdenum precious metal material, or the mixing material of various metals in gold, silver or molybdenum, if The metal layer 50 is mixing material, and the ratio of the gold, silver or molybdenum is selected according to the actual situation, it is not limited here.

Optionally, multiple metal bumps are arranged close to the side of graphene layer 30 in fixed plate electrode 40.

In order to enable the capacitor that the graphene layer 30 and the fixed plate electrode 40 are formed concentrates on the microwave quantum of generation Then multiple metal bumps can be arranged (in figure not close to the side of the graphene layer 30 in the fixed plate electrode 40 in surface location Show), multiple metal bumps reduce the distance between the fixed plate electrode 40 and the graphene layer 30, so that working as the stone It is bigger to the change of the capacitor when black alkene layer 30 vibrates under the action of photon.

Optionally, center conductor 20 opens up hole close to the position of graphene layer 30.

In order to preferably when photon strikes graphene layer 30, change graphene layer 30 and the fixed plate electrode 40 The distance between, to preferably change capacitor, then can be opened up in the center conductor 20 close to the position of the graphene layer 30 Hole can preferably change the distance between graphene layer 30 and the fixed plate electrode 40 by the hole, to reach more The purpose of good change capacitor.

Fig. 3 is another photon state microwave quantum state conversion based on microwave coplanar waveguide that one embodiment of the invention provides The structural schematic diagram of device, as shown in figure 3, optionally, photon state microwave quantum state converter further includes vibration level 60, vibration level 60 On the hole leaned on coated in center conductor 20.

Vibration level 60 is coated, on the hole to increase Oscillation Amplitude of the graphene layer 30 under the impact of photon.

Optionally, the material of the vibration level 60 is graphene.

The application is by being provided with graphene layer 30 in the side at the long end of L shape center conductor 20, and the one of graphene layer 30 End extends the end for stretching out the center conductor 20, and one of the graphene far from center conductor 20 is arranged in optical waveguide 10 Side, the position of the optical waveguide 10 are oppositely arranged with the position of the graphene, and the centrally disposed conductor 20 of fixed plate electrode 40 is remote Side from graphene layer 30, and the fixed plate electrode 40 is opposite with the position of graphene layer 30, transmits when in the optical waveguide 10 Out when photon, which is struck on the graphene layer 30, is formed between the graphene layer 30 and the fixed plate electrode 40 One capacitor, since the graphene layer 30 vibrates under the action of the photon, so that the voltage of the capacitor changes, And then a microwave quantum is being generated under capacity effect between the capacitor, so that the conversion of photon to microwave quantum is realized, and And the converter structure is simple, since the converter structure is simple, a microwave quantum, institute can be exported by inputting a photon With converter stability height.

The embodiment of the present application also provides another photon state microwave quantum state converter system based on microwave coplanar waveguide, Photon state microwave quantum state converter system includes: the photon state microwave quantum state converter of light source and above-mentioned any one, light One end with optical waveguide 10 far from fixed plate electrode 40 is arranged in source.

The one end of the optical waveguide 10 far from fixed plate electrode 40 is arranged in light source, for giving this based on microwave coplanar waveguide Photon state microwave quantum state converter system provides light source, and the type of the light source is selected according to actual needs, do not done herein Specific to limit, in general, the light source is laser light source, and the light source can once issue a photon.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the present invention can have it is various more should and change.All within the spirits and principles of the present invention, made any to repair Should, equivalent replacement, should into etc., should all be included in the protection scope of the present invention.