CN109196397A - For generating the device and system, fixed single-photon source method of single photon - Google Patents
For generating the device and system, fixed single-photon source method of single photon Download PDFInfo
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- CN109196397A CN109196397A CN201680086251.3A CN201680086251A CN109196397A CN 109196397 A CN109196397 A CN 109196397A CN 201680086251 A CN201680086251 A CN 201680086251A CN 109196397 A CN109196397 A CN 109196397A
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Abstract
A kind of device and system for generating single photon, fixed single-photon source method, which includes waveguide；Resonant cavity is located above the waveguide；Thermally sensitive polymeric, positioned at being provided with above the waveguide of the resonant cavity；Wherein, the thermally sensitive polymeric is hydrophily under conditions of being less than temperature threshold, is hydrophobicity under conditions of being not less than temperature threshold.The device architecture for being used to generate single photon is simple and easily fabricated, simplifies the manufacture craft of the device for generating single photon.
Description
The present invention relates to quantum information equipment technical fields, the more particularly, to device of generation single photon and system, fixed single-photon source method.
Quantum information science is quantum mechanics and product that information science technology combines, including quantum cryptography, quantum communications, quantum calculation, quantum measurement etc., in recent years, all has been achieved for important breakthrough theoretical and experimental.Either quantum communications or quantum calculation, stable, high-speed single-photon source are all the key equipments that must be solved.Single-photon source, which refers to, only emits the light source of a photon in synchronization.
In the prior art, in order to generate single photon, usually luminescent material indium arsenide (InAs) and aluminium indium arsenide (AlGaAs) quantum dot are coupled into the approximate nano wire of lattice structure in growth.After exciting later to luminescent material, since luminescence generated by light phenomenon (Photoluminescence) generates spontaneous radiation, release is equal to the single photon stream of bandgap energy.These photons are due to being bound in the nano wire for being similar to optical waveguide, with specific light emission direction and luminous field distribution.
In above scheme, InAs and AlGaAs Quantum Dots Growth are needed into higher level of processing and more complex manufacture craft into nano wire.
Summary of the invention
The embodiment of the present invention provides a kind of for generating the device and system of single photon, and fixed single-photon source method, for simplifying for generating the manufacture craft of the device of single photon, and generates single photon by simple method.
In a first aspect, the embodiment of the present invention provide it is a kind of for generating the device of single photon, comprising: waveguide；Resonant cavity is located above the waveguide；Thermally sensitive polymeric, positioned at being provided with above the waveguide of the resonant cavity；Wherein, the thermally sensitive polymeric is hydrophily under conditions of being less than temperature threshold, is hydrophobicity under conditions of being not less than temperature threshold.It can be seen that the device architecture for being used to generate single photon is simple, and
It is easily fabricated, simplify the manufacture craft of the device for generating single photon.
Optionally, the resonant cavity is surface plasma resonant vibration chamber.In this way, can further improve the light intensity of the single photon in resonant cavity.Optionally, the resonant cavity is made of two metalworks.In this way, can further improve the light intensity of the single photon in resonant cavity.Optionally, the resonant cavity is formed by following any form: two apex angles by being located at two triangle metal parts are separated by pre-determined distance and are formed；It is separated by pre-determined distance by bimetal nano line to be formed；It is separated by pre-determined distance by bimetal nano ball to be formed.In this way, on the one hand can preferably fix the single photon in resonant cavity, the light intensity of the single photon in resonant cavity on the other hand also can be improved.
Optionally, the device for generating single photon further includes antenna.Antenna is located above the waveguide, below the thermally sensitive polymeric；Wherein, the resonant cavity is located at the feed assembly of the antenna.In this way, the single photon generated at the resonant cavity of the device for generating single photon can be propagated at the feed assembly of antenna along specific direction, thus the direction of single photon caused by controlling well.Further, resonant cavity is placed at the feed assembly of antenna, can be enhanced at resonant cavity generate when photon light intensity.The third aspect, since antenna to be placed in above waveguide, antenna can produce light field obliquely, which enters waveguide, so as to preferably make the single photon generated at resonant cavity be coupled into waveguide.Optionally, the antenna is yagi aerial.It so, it is possible preferably to control single photon towards specific direction propagation.
Second aspect, the embodiment of the present invention provide a kind of any for generating the method for fixing single-photon source in the device of single photon in embodiments of the present invention, comprising: laser is irradiated at the resonant cavity on the device for generating single photon；The liquid for carrying single-photon source is flowed on the surface of the thermally sensitive polymeric；Wherein, the dentate of the single-photon source in the liquid for carrying single-photon source is hydrophobicity；Wherein, the laser is used for: increasing the temperature in the resonant cavity, the thermally sensitive polymeric is made to be converted to hydrophobicity from hydrophily, and the liquid for carrying single-photon source is attracted to stay in the resonant cavity.It can be seen that the device architecture for being used to generate single photon is simple and easily fabricated, the manufacture craft of the device for generating single photon is simplified.
Optionally, the single-photon source in the liquid for carrying single-photon source is Colloidal Quantum Dots or dye molecule.In this way, single-photon source used in the one side embodiment of the present invention does not need harsh environment requirement, for example extremely low environment temperature etc. is required, to simplify generation technique；On the other hand, can make to carry
The liquid of single-photon source in embodiments of the present invention provided by flowed for the upper surface of the device that generates single photon, to successfully realize scheme provided by the embodiment of the present invention.
Optionally, the difference between the local frequency of the resonant cavity and the local frequency of the single-photon source is less than resonant frequency threshold value；Difference in the device for generating single photon between the local frequency of also included antenna and the local frequency of the single-photon source is less than the resonant frequency threshold value.In this way, the local frequency of resonant cavity and the local frequency of single-photon source are closer to, therefore it can resonate under the effect of the laser, to enhance single photon light intensity.And the local frequency of antenna and the local frequency of single-photon source are closer to, therefore can be resonated under the effect of the laser, to enhance single photon light intensity.
The third aspect, the embodiment of the present invention provides a kind of single photon generation system, including any device for being used to generate single photon provided in an embodiment of the present invention, laser and liquid inflow device, in which: the laser is used to irradiate laser at the resonant cavity on the device for generating single photon；The liquid inflow device is used for the surface in the thermally sensitive polymeric and flows into the liquid for carrying single-photon source；Wherein, the dentate of the single-photon source in the liquid for carrying single-photon source is hydrophobicity；Wherein, the laser is used for: increasing the temperature in the resonant cavity, the thermally sensitive polymeric is set to be converted to hydrophobicity from hydrophily, and the liquid for carrying single-photon source is attracted to stay in the resonant cavity, and the liquid for making to stay in the carrying single-photon source in the resonant cavity issues single photon under the irradiation of the laser, the single photon is coupled to the waveguide internal transmission.
In the embodiment of the present invention, the device for generating single photon includes waveguide；Resonant cavity is located above the waveguide；Thermally sensitive polymeric, positioned at being provided with above the waveguide of the resonant cavity；Wherein, the thermally sensitive polymeric is hydrophily under conditions of being less than temperature threshold, is hydrophobicity under conditions of being not less than temperature threshold.It can be seen that the device architecture for being used to generate single photon is simple and easily fabricated, the manufacture craft of the device for generating single photon is simplified.
Further, when being used to generate the device generation single photon of single photon based on this, it is used only in irradiation laser at the resonant cavity on the device for generating single-photon source；The liquid for carrying single-photon source is flowed on the surface of the thermally sensitive polymeric.Since the dentate of the single-photon source in the liquid for carrying single-photon source is hydrophobicity.Therefore irradiation laser can be such that the temperature in the resonant cavity increases at resonant cavity, and the thermally sensitive polymeric is made to be converted to hydrophobicity from hydrophily, and attract the liquid for carrying single-photon source
The liquid for staying in the resonant cavity, and making to stay in the carrying single-photon source in the resonant cavity issues single photon under the irradiation of the laser, and the single photon is coupled to the waveguide internal transmission.As it can be seen that generating single photon in the embodiment of the present invention by simple method, and realize the coupling of single photon and waveguide.
To describe the technical solutions in the embodiments of the present invention more clearly, attached drawing needed in describing below to embodiment is briefly introduced.
Fig. 1 is provided in an embodiment of the present invention a kind of for generating the structural schematic diagram of the device of single photon；
Fig. 2 is the method and step schematic diagram provided in an embodiment of the present invention prepared for generating the device of single photon；
Fig. 3 is the method and step schematic diagram provided in an embodiment of the present invention prepared for generating the device of single photon；
Fig. 4 is the method and step schematic diagram provided in an embodiment of the present invention prepared for generating the device of single photon；
Fig. 5 is the method and step schematic diagram provided in an embodiment of the present invention prepared for generating the device of single photon；
Fig. 6 is the method and step schematic diagram provided in an embodiment of the present invention prepared for generating the device of single photon；
Fig. 7 is the schematic diagram of direction A in Fig. 6 provided in an embodiment of the present invention；
Fig. 8 is the method that single-photon source is fixed in a kind of device for generating single photon provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram that a kind of single photon provided in an embodiment of the present invention generates system；
Figure 10 is the schematic diagram of direction A in Fig. 9 provided in an embodiment of the present invention；
Figure 11 is the schematic diagram of light intensity of the single photon in resonant cavity and light intensity in free space in the embodiment of the present invention.
In order to which the purpose of the present invention, technical solution and beneficial effect is more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
In specific implementation, in many fields, stable, high-speed single-photon source is all the key equipment that must be solved.Specifically, it in quantum communications field, can be transmitted in personal space or optical fiber, wherein the quality of single-photon light source has conclusive influence to key yield, photon degree of coherence etc. using the single photon of generation as quantum bit.In quantum calculation field, single or entangled photons linear actions can be used to carry out a large amount of concurrent operations, wherein can single-photon light source generate the photon of " determining (on-demand; what i.e. non-probability generated) ", be one of the premise of quantum calculation success.In terms of meterological, single photon can be used to carry out the super diffraction limit imaging of biological sample, wherein the brightness of single photon, the features such as monochromaticjty also play conclusive influence to image quality.In terms of infrastest, the bell inequality in quantum mechanics is verified, and search of gravitational wave etc., single photon also plays huge effect.
Based on above-mentioned poll, a kind of for generating the device and system of single photon, and fixed single-photon source method is provided in the embodiment of the present invention, for simplifying for generating the manufacture craft of the device of single photon, and generates single photon by simple method.
Fig. 1 illustrate it is provided in an embodiment of the present invention a kind of for generating the structural schematic diagram of the device of single photon, as shown in Figure 1, this is used to generate the device of single photon, comprising: waveguide 102；Resonant cavity 103；Thermally sensitive polymeric 105.
Wherein, resonant cavity 103 is located above the waveguide；Thermally sensitive polymeric 105 is located at 102 top of the waveguide for being provided with the resonant cavity 103；Wherein, the thermally sensitive polymeric 105 is hydrophily under conditions of being less than temperature threshold, is hydrophobicity under conditions of being not less than temperature threshold.Temperature threshold is a temperature value, can be determined according to specific operating environment.
Optionally, the resonant cavity is surface plasma resonant vibration chamber.Optionally, the resonant cavity is made of two metalworks.Optionally, the resonant cavity is made of two nano metal parts.In this way, can further improve the light intensity of the single photon in resonant cavity.
Optionally, the resonant cavity is formed by following any form: by being located at two triangle gold
Two apex angles for belonging to part are separated by pre-determined distance and are formed；It is separated by pre-determined distance by bimetal nano line to be formed；It is separated by pre-determined distance by bimetal nano ball to be formed.Specifically, resonant cavity can be made of two components, be separated by between pre-determined distance, such as two wedge angles of two triangles between two components and be separated by pre-determined distance, and two components can form resonant cavity at this time, and for details, reference can be made to resonant cavities 103 shown in Fig. 7.It is separated by pre-determined distance by the top of two bimetal nano lines for another example to be formed；It is separated by pre-determined distance by bimetal nano ball for another example to be formed.In this way, on the one hand can preferably fix the single photon in resonant cavity, the light intensity of the single photon in resonant cavity on the other hand also can be improved.
In the embodiment of the present invention, under the action of thermally sensitive polymeric, single photon is generated at resonant cavity, and import inside waveguide.It can be seen that the device architecture for being used to generate single photon is simple and easily fabricated, the manufacture craft of the device for generating single photon is simplified.
Optionally, in order to preferably control the direction of single photon, in the device for generating single photon further include: antenna is located above the waveguide, below the thermally sensitive polymeric；Wherein, the resonant cavity is located at the feed assembly of the antenna, i.e., resonant cavity is used at the feed assembly of antenna, that is to say, that resonant cavity constitutes the feed assembly of antenna.In this way, the single photon generated at the resonant cavity of the device for generating single photon can be propagated at the feed assembly of antenna along specific direction, thus the direction of single photon caused by controlling well.Further, cavity resonator structure is used at the feed assembly of antenna, and the light intensity of the single photon generated at resonant cavity can be enhanced.The third aspect, since antenna to be placed in above waveguide, antenna can produce light field obliquely, which enters waveguide, so as to preferably make the single photon generated at resonant cavity be coupled into waveguide.
Optionally, antenna system can there are many, as long as can control single photon towards specific direction propagate, it is preferable that the antenna be yagi aerial.
Based on foregoing description, the embodiment of the present invention provides a kind of method for preparing the above-mentioned device for being used to generate single photon, and Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 show the method and step schematic diagram for preparing the above-mentioned device for being used to generate single photon:
First, as shown in Fig. 2, first preparing substrate 101；
Second, one layer of waveguide 102 is prepared on substrate 101, as shown in Figure 3；
As shown in figure 4, making resonant cavity 103 in waveguide 102 optionally, complementation can be used in third
Metal-oxide semiconductor (MOS) (Complementary Metal Oxide Semiconductor, abbreviation CMOS) technique prepares resonant cavity 103；
4th, optionally, as shown in figure 5, making antenna 104 above waveguide 102.Optionally, usable CMOS technology prepares antenna 104.Resonant cavity 103 is located at the feed assembly of antenna 104.The feed assembly of antenna 104 is replaced using resonant cavity 103；
5th, one layer of thermally sensitive polymeric 105 is covered in body structure surface, as shown in Figure 6.The thermally sensitive polymeric is hydrophily under conditions of being less than temperature threshold, is hydrophobicity under conditions of being not less than temperature threshold.Specifically, thermally sensitive polymeric 105 there are many materials optionally, such as poly-N-isopropyl acrylamide (PNIPAM), the material can become hydrophobicity from hydrophily when being higher than specific temperature (such as 32 DEG C).
Fig. 7 illustrates the schematic diagram of direction A in Fig. 6 provided in an embodiment of the present invention, as shown in fig. 7, resonant cavity 103 is a butterfly, i.e., is formed by being separated by pre-determined distance between two wedge angles of two triangle metal parts.Antenna shown in Fig. 7 is yagi aerial.
Based on above content, Fig. 8 illustrates the embodiment of the present invention and also provides a kind of method for fixing single-photon source in the device for generating single photon, as shown in Figure 8, comprising:
Step 801, laser is irradiated at the resonant cavity on the device for generating single photon；
Step 802, the liquid of carrying single-photon source is flowed on the surface of thermally sensitive polymeric；Wherein, the dentate for carrying the quantum dot in the liquid of single-photon source is hydrophobicity；Wherein, laser is used for: increasing the temperature in resonant cavity, thermally sensitive polymeric is made to be converted to hydrophobicity from hydrophily, and the liquid for carrying single-photon source is attracted to stay in resonant cavity.
As it can be seen that through the above steps 801 and step 802 single-photon source can be fixed at resonant cavity, solve the problems, such as that the prior art can not fix single-photon source, and then the direction for control single photon provides the foundation.
Optionally, difference between the local frequency of the antenna and the local frequency of the single-photon source is less than resonant frequency threshold value, so, the local frequency of antenna and the local frequency of single-photon source are closer to, therefore it can resonate in the case where single-photon source shines, to unidirectionally guide single photon emission.Optionally, the difference between the local frequency of the resonant cavity and the local frequency of the single-photon source is less than resonant frequency threshold value.In this way, the local frequency of resonant cavity and the local frequency of single-photon source are closer to, therefore
It can resonate under the effect of the laser, to enhance single photon light intensity.
In the embodiment of the present invention, a method of the material for being used to determine resonant cavity and antenna optionally are as follows: the wave band according to locating for single-photon source determines resonant cavity and antenna material.For example, then gold, silver, the materials such as copper or aluminium can be used in resonant cavity and antenna when the wave band of laser is in visible light near infrared range.When the wave band of laser is in middle infrared band, resonant cavity and the antenna semiconductor that also height in hand adulterates.Optionally, the material of resonant cavity and antenna may be the same or different.In the material of selective resonance chamber and antenna, resonant cavity, antenna and single-photon source is set to generate resonance as far as possible, even if the local frequency for the single photon that resonant cavity, antenna and single-photon source issue is identical, so as to enhance the light intensity of single photon.Optionally, the local frequency of antenna can be changed by changing the size of antenna.
Optionally, further, at using laser irradiation resonant cavity, so that the single-photon source for making to stay in the liquid of the carrying single-photon source in the resonant cavity issues single photon under the irradiation of the laser, the single photon is coupled to the waveguide internal transmission.
Optionally, the single-photon source in the liquid for carrying single-photon source is Colloidal Quantum Dots or dye molecule.Or the single-photon source in the liquid of carrying single-photon source is the single-photon source synthesized by other chemical means.Optionally, the Colloidal Quantum Dots are II-VI race's quantum dot, such as cadmium selenide (CdSe), zinc sulphide (ZnS) etc..The single-photon source carried in the liquid of single-photon source is not limited only to II-VI race's quantum dot, can also be other semiconductor-quantum-points.In this way, single-photon source used in the one side embodiment of the present invention does not need harsh environment requirement, for example extremely low environment temperature etc. is required, to simplify generation technique；On the other hand, can make the liquid for carrying single-photon source in embodiments of the present invention provided by flowed for the upper surface of the device that generates single photon, to successfully realize scheme provided by the embodiment of the present invention.
In specific implementation, when single-photon source is semiconductor-quantum-point, since semiconductor quantum spot size is minimum, the several nanometers of diameter (nm) are to more than ten of nm, the wave function of bound electron causes it to have discrete energy level in quantum dot on three-dimensional, therefore semiconductor-quantum-point is used as generating the two-level system for being similar to atom.Using the electronics in the pumping photo-excited semiconductor quantum dot with appropriate wavelength, it can be made to transit to high level from low-lying level.When electronics returns to low-lying level, the photon of a fixed energies can be released.Therefore, such semiconductor-quantum-point can be used as " certainty " single-photon source, as long as i.e. irradiation pump
Pu pulse will release single photon.
In the embodiment of the present invention, the dentate for the single-photon source for including in the liquid for carrying single-photon source can flexibly be changed, for example set hydrophobicity for the dentate of the single-photon source in the liquid for carrying single-photon source.
Based on same design, Fig. 9 illustrates a kind of structural schematic diagram of single photon generation system, as shown in figure 9, the system includes the device for generating single photon, laser 110 and liquid inflow device 111, in which:
The laser 110, which is used to irradiate at the resonant cavity 103 on the device for generating single photon, swashs 109 light；The liquid inflow device 111 is used for the surface in the thermally sensitive polymeric 105 and flows into the liquid 106 for carrying single-photon source；Wherein, the dentate of the single-photon source 107 in the liquid 106 for carrying single-photon source is hydrophobicity；Wherein, the laser 109 is used for: increasing the temperature in the resonant cavity 103, make to be converted to hydrophobicity from hydrophily in the thermally sensitive polymeric of irradiation area in laser, and the liquid 106 for carrying single-photon source is attracted to stay in the resonant cavity 103.
Optionally, thermally sensitive polymeric be excited change property include but is not limited to hydrophily, chemical bond etc. physically or chemically.That is, thermally sensitive polymeric under the variation of temperature, can become hydrophobicity from hydrophily.Thermally sensitive polymeric can also have it is other it is changeable physically or chemically etc..As long as single-photon source can be adsorbed after the change of thermally sensitive polymeric property, and property cannot adsorb single-photon source before changing.
Further, optionally, when needing using described for generating the device generation single photon of single photon, the laser irradiation that utilisable energy is greater than photon source bandgap energy is fixed on the single-photon source at the resonant cavity center, it is set to emit single photon, the single photon is coupled to the waveguide internal transmission.
Figure 10 illustrates the schematic diagram of direction A in Fig. 9 in the embodiment of the present invention, is described in detail below with reference to Fig. 9 and Figure 10.
As shown in figure 9, irradiating 103 top of resonant cavity with the laser 109 that laser 110 issues, as shown in Figure 10, laser irradiation area 106 covers resonant cavity 103.Later, carrying carries the liquid 106 of single-photon source in liquid inflow device 111, and the liquid 106 of the carrying single-photon source carried in liquid inflow device 111 is poured into and is used to generate the device of single photon and specifically pours into the surface of the thermally sensitive polymeric 105.Optionally, the liquid 106 for carrying single-photon source is poured into from the left side of resonant cavity 103, makes to carry
The liquid 106 of single-photon source flows through the upper surface of the entire device for being used to generate single photon, and part is flowed out again from right side.It is alternatively possible to flow into the liquid 106 of the carrying single-photon source flowed out from the upper surface of the device for generating single photon in a recycling bin, for being recycled again.
Optionally, resonant cavity is surface plasma resonant vibration chamber, and due to the plasma resonance of plasma surface, the tip of the nano metal of resonant cavity can generate local humidification.Electrons in the single-photon source being placed in one generate Purcell, Edward Mills effect (Purcell effect) effect (i.e. electronics will be greatly reduced in the relaxation time of height energy level transition), further enhance the brightness of single-photon source.
Optionally, laser 109 is radiated at the top of resonant cavity 103.As shown in Figure 10, when laser 109 is radiated at resonant cavity 103, the center of resonant cavity 103 can be such that temperature increases within the scope of little space, be converted to hydrophobicity from hydrophily so as to cause the thermally sensitive polymeric 105 in resonant cavity 103 due to the local enhancing of electric field.Since the dentate of single-photon source is also hydrophobicity, when the liquid 106 for carrying single-photon source flows through resonant cavity 103, the single-photon source of the inside can be attracted in resonant cavity 103.Thermally sensitive polymeric 105 since laser heated perimeter is minimum, and except laser irradiation area 106 is still hydrophily, therefore the liquid for flowing through the carrying single-photon source of hydrophilic thermally sensitive polymeric flows away along the upper surface of the device for generating single photon.Optionally, laser irradiation range is smaller, and resonant cavity is also smaller, and the quantity for the single photon being attracted in resonant cavity can be one.As it can be seen that scheme provided by through the embodiment of the present invention, accurately controls the position of single-photon source, that is, is fixed in resonant cavity.
Further, in the embodiment of the present invention, optionally, single-photon source fixed in resonant cavity resonant cavity is located at the feed assembly of antenna, under laser irradiation, single-photon source can generate single photon, single photon is propagated under the action of antenna along specific direction, to achieve the purpose that control the single photon direction of propagation, as shown in Figure 10, single photon 108 can be propagated along the right side of antenna.
Further, it due to the refractive index of the projecting medium of the refractive index of waveguide 102, can be tied in the higher waveguide 102 of refractive index from the single photon generated in resonant cavity, to realize the coupling of single photon and waveguide.
In the embodiment of the present invention, the device architecture for being used to generate single photon is simple and easily fabricated, simplifies the manufacture craft of the device for generating single photon.
Second, single-photon source can be fixed at resonant cavity by the device for being used to generate single photon, it is real
The purpose of fixed single photon is showed.
Third further enhances the light intensity of single-photon source due to the Purcell, Edward Mills effect (Purcell effect) of resonant cavity using the laser irradiation single-photon source that energy is greater than single-photon source bandgap energy.Figure 11 illustrates the schematic diagram of light intensity of the single photon in resonant cavity and light intensity in free space in the embodiment of the present invention, as shown in figure 11, in the case where the excitation intensity of laser is certain, light intensity of the single photon in resonant cavity is far longer than the light intensity of the single photon in free space.
4th, it under the action of antenna, transmits single photon caused by single-photon source along specific direction, has achieved the purpose that fixed single photon direction.
5th, single photon successfully can be coupled into waveguide by the provided device for generating single photon of the embodiment of the present invention.
Although preferred embodiments of the present invention have been described, once a person skilled in the art knows basic creative concepts, then additional changes and modifications may be made to these embodiments.So it includes preferred embodiment and all change and modification for falling into the scope of the invention that the following claims are intended to be interpreted as.Obviously, those skilled in the art various changes and modifications can be made to the invention without departing from the spirit and scope of the present invention.If then the invention is also intended to include including these modification and variations in this way, these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology.
Claims (10)
- It is a kind of for generating the device of single photon characterized by comprisingWaveguide；Resonant cavity is located above the waveguide；Thermally sensitive polymeric, positioned at being provided with above the waveguide of the resonant cavity；Wherein, the thermally sensitive polymeric is hydrophily under conditions of being less than temperature threshold, is hydrophobicity under conditions of being not less than temperature threshold.
- The device as described in claim 1 for being used to generate single photon, which is characterized in that further include:Antenna is located above the waveguide, below the thermally sensitive polymeric；Wherein, the resonant cavity is located at the feed assembly of the antenna.
- The device as claimed in claim 2 for being used to generate single photon, which is characterized in that the antenna is yagi aerial.
- The device for being used to generate single photon as described in claims 1 to 3 any claim, which is characterized in that the resonant cavity is surface plasma resonant vibration chamber.
- The device for being used to generate single photon as described in Claims 1-4 any claim, which is characterized in that the resonant cavity is made of two metalworks.
- The device according to any one of claims 1 to 5 for being used to generate single photon, which is characterized in that the resonant cavity is formed by following any form:Two apex angles by being located at two triangle metal parts are separated by pre-determined distance and are formed；It is separated by pre-determined distance by bimetal nano line to be formed；It is separated by pre-determined distance by bimetal nano ball to be formed.
- A method of based on fixing single-photon source in the device for generating single photon described in claim 1~6 any claim characterized by comprisingLaser is irradiated at resonant cavity on the device for generating single photon；The liquid for carrying single-photon source is flowed on the surface of the thermally sensitive polymeric；Wherein, the dentate of the single-photon source in the liquid for carrying single-photon source is hydrophobicity；Wherein, the laser is used for: being increased the temperature in the resonant cavity, is kept the temperature-sensitive poly- It closes object and is converted to hydrophobicity from hydrophily, and the liquid for carrying single-photon source is attracted to stay in the resonant cavity.
- The method of claim 7, which is characterized in that the single-photon source in the liquid for carrying single-photon source is Colloidal Quantum Dots or dye molecule.
- The method of claim 7, which is characterized in that the difference between the local frequency of the resonant cavity and the local frequency of the single-photon source is less than resonant frequency threshold value；Difference in the device for generating single photon between the local frequency of also included antenna and the local frequency of the single-photon source is less than the resonant frequency threshold value.
- A kind of single photon generation system, which is characterized in that including the device for being used to generate single photon as described in claim 1~6 any claim, laser and liquid inflow device, in which:The laser is used to irradiate laser at the resonant cavity on the device for generating single photon；The liquid inflow device is used for the surface in the thermally sensitive polymeric and flows into the liquid for carrying single-photon source；Wherein, the dentate of the single-photon source in the liquid for carrying single-photon source is hydrophobicity；Wherein, the laser is used for: increasing the temperature in the resonant cavity, the thermally sensitive polymeric is set to be converted to hydrophobicity from hydrophily, and the liquid for carrying single-photon source is attracted to stay in the resonant cavity, and the liquid for making to stay in the carrying single-photon source in the resonant cavity issues single photon under the irradiation of the laser, the single photon is coupled to the waveguide internal transmission.
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| PCT/CN2016/098245 WO2018045491A1 (en) | 2016-09-06 | 2016-09-06 | Device and system for generating single photon, method for fixing single-photon source |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010016095A1 (en) * | 2000-02-17 | 2001-08-23 | Akihisa Tomita | Single photon generating apparatus |
| CN1318014A (en) * | 1998-09-18 | 2001-10-17 | 柯达彩色图形有限公司 | Thermosensitive, polymeric image recording material and method for use |
| CN101730961A (en) * | 2007-03-16 | 2010-06-09 | 哈佛大学 | Be used to produce the method and apparatus of terahertz emission |
| CN101976797A (en) * | 2010-10-09 | 2011-02-16 | 山西大学 | Locking method of single photon optical resonant cavity and device thereof |
| CN102616044A (en) * | 2012-03-08 | 2012-08-01 | 中国科学院化学研究所 | Colloidal photon crystal composite film with humidity responsiveness and patterning, and method for preparing same |
| CN103346476A (en) * | 2013-06-24 | 2013-10-09 | 中国科学院长春光学精密机械与物理研究所 | Photonic crystal nano cavity quantum ring single-photon emission device and preparation method thereof |
| CN105720475A (en) * | 2016-03-23 | 2016-06-29 | 华南理工大学 | Unidirectional optical transmitting method and apparatus for photonic crystal based all-optical diode |
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| JP4360812B2 (en) * | 2003-02-20 | 2009-11-11 | 富士通株式会社 | Single photon generator and single photon generation method |
| JP4872302B2 (en) * | 2005-10-17 | 2012-02-08 | ソニー株式会社 | Single photon generator |
| US8842949B2 (en) * | 2010-09-02 | 2014-09-23 | Technische Universitat Darmstadt | Single photon emission system |
| CN103557950A (en) * | 2013-11-05 | 2014-02-05 | 上海朗研光电科技有限公司 | Single photon detector with stable efficiency and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318014A (en) * | 1998-09-18 | 2001-10-17 | 柯达彩色图形有限公司 | Thermosensitive, polymeric image recording material and method for use |
| US20010016095A1 (en) * | 2000-02-17 | 2001-08-23 | Akihisa Tomita | Single photon generating apparatus |
| CN101730961A (en) * | 2007-03-16 | 2010-06-09 | 哈佛大学 | Be used to produce the method and apparatus of terahertz emission |
| CN101976797A (en) * | 2010-10-09 | 2011-02-16 | 山西大学 | Locking method of single photon optical resonant cavity and device thereof |
| CN102616044A (en) * | 2012-03-08 | 2012-08-01 | 中国科学院化学研究所 | Colloidal photon crystal composite film with humidity responsiveness and patterning, and method for preparing same |
| CN103346476A (en) * | 2013-06-24 | 2013-10-09 | 中国科学院长春光学精密机械与物理研究所 | Photonic crystal nano cavity quantum ring single-photon emission device and preparation method thereof |
| CN105720475A (en) * | 2016-03-23 | 2016-06-29 | 华南理工大学 | Unidirectional optical transmitting method and apparatus for photonic crystal based all-optical diode |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029446A (en) * | 2019-12-12 | 2020-04-17 | 电子科技大学 | Quantum dot single photon source and preparation method thereof |
| CN111029446B (en) * | 2019-12-12 | 2022-05-27 | 电子科技大学 | Quantum dot single photon source and preparation method thereof |
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| CN109196397B (en) | 2019-11-29 |
| WO2018045491A1 (en) | 2018-03-15 |
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