Higher harmonic quantum orbit regulation and control method and device and electronic equipment

Abstract

The invention provides a higher harmonic quantum orbit regulation and control method and device and electronic equipment, and belongs to the technical field of high-field higher harmonics, and the method comprises the steps: controlling optical parameter equipment to prepare infrared compression electric fields with different quantum states; acquiring higher harmonics generated by the action of the infrared compressed electric field and the working gas; and performing time-frequency conversion on the higher harmonics to obtain a time-frequency structure of the higher harmonics, and obtaining a higher harmonic quantum orbit regulation and control result based on the time-frequency structure. According to the method, infrared compressed electric fields in different quantum states can be decomposed into coherence superposition of a plurality of coherence states, higher harmonics generated by the action of the electric field in each coherence state and working gas are directly obtained during further calculation, and the obtained higher harmonics are subjected to time-frequency conversion to obtain a higher harmonic time-frequency structure. And a higher harmonic quantum orbit regulation and control result is displayed.

Description

Technical Field

[0001] The present invention relates to the technical field of strong field high-order harmonics, and in particular to a high-order harmonic quantum orbit control method, device and electronic equipment. Background Art

[0002] High-order harmonic generation (HHG) is a highly nonlinear and non-perturbative process that occurs when a strong laser field interacts with a gas, solid or liquid. Due to its excellent coherence and extremely wide platform structure, HHG can be used as a basic light source for synthesizing attosecond pulses, which have extreme temporal and spatial resolution and are very important in studying the motion of electrons inside molecules and atoms and ultrafast electron dynamic imaging.

[0003] Any harmonic below the cutoff region is composed of two main quantum orbits, called short orbits and long orbits. Controlling these two quantum orbits is very important in strong field physics and attosecond science. Traditional methods for controlling high-order harmonic quantum orbits mainly include manipulating macroscopic phase matching conditions and using non-uniform or orthogonal polarization two-color fields. These methods can only select long or short orbits of certain harmonic orders, and cannot achieve the control of different quantum orbits of high-order harmonics. Summary of the invention

[0004] In view of this, it is necessary to provide a high-order harmonic quantum orbit control method, device and electronic equipment to achieve the purpose of controlling different high-order harmonic quantum orbits.

[0005] In order to solve the above problems, in a first aspect, the present invention provides a high-order harmonic quantum orbit control method, comprising: Controlling optical parametric devices to prepare infrared compressed electric fields with different quantum states; Acquiring high-order harmonics generated by the infrared compression electric field and the working gas; The high-order harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the high-order harmonics, and based on the time-frequency structure, the high-order harmonic quantum orbit control result is obtained.

[0006] In a possible implementation, the infrared compression electric field includes: a phase compression infrared electric field and an amplitude compression infrared electric field.

[0007] In a possible implementation, controlling an optical parametric device to prepare infrared compressed electric fields with different quantum states includes: Based on the infrared compressed electric field equation and the phase space probability distribution equation, the optical parametric device is controlled to prepare infrared compressed electric fields with different quantum states. The infrared compression electric field equation is: ; in, is the infrared compressed electric field, For time, is the frequency of the infrared compressed electric field, is the reduced Planck constant, is the envelope of the infrared compressed electric field, is a trapezoidal envelope with two rising cycle and two falling cycle edges and a six-cycle platform, is the dielectric constant in vacuum, is the quantized volume, and The coherence parameters are The real and imaginary parts of The phase space probability distribution equation is:

[0008] in, represents the phase space probability, is the compression parameter, when It indicates phase compression when When , it indicates amplitude compression. , is a given state The complex amplitude of .

[0009] In a possible implementation, obtaining high-order harmonics generated by the infrared compression electric field and the working gas includes: According to the harmonic dipole moment expectation value equation, obtaining the higher harmonics generated by the infrared compression electric field and the working gas; Wherein, the expected value equation of the harmonic dipole moment is:

[0010] is the expected value of the harmonic dipole moment, corresponds to the compressed state The expected value of the dipole moment generated by the compression electric field and the working gas, and .

[0011] In a possible implementation, the transformation equation corresponding to the time-frequency transformation of the high-order harmonics is:

[0012] in, represents the time-frequency structure, is the harmonic order, is the expected value of the harmonic dipole moment, for The width of the Gaussian window at the moment, For time, is the frequency of the compressed electric field.

[0013] In one possible implementation, .

[0014] In a possible implementation, the working gas is atomic gas.

[0015] In a second aspect, the present invention further provides a high-order harmonic quantum orbit control device, comprising: An electric field control module, used to control the optical parameter device to prepare infrared compressed electric fields with different quantum states; A harmonic acquisition module, used to acquire high-order harmonics generated by the infrared compression electric field and the working gas; The control result generating module is used to perform time-frequency transformation on the high-order harmonics to obtain the time-frequency structure of the high-order harmonics, and obtain the high-order harmonic quantum orbit control result based on the time-frequency structure.

[0016] In a third aspect, the present invention further provides an electronic device, including a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the high-order harmonic quantum orbit control method as described in any one of the above items.

[0017] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the high-order harmonic quantum orbit control method as described in any one of the above items are implemented.

[0018] The beneficial effect of adopting the above implementation method is: the present invention prepares infrared compressed electric fields of different quantum states, uses the infrared compressed electric fields to react with working gas to generate high-order harmonics, further performs time-frequency transformation on the obtained high-order harmonics to obtain the high-order harmonic time-frequency structure, and displays the results of regulating the high-order harmonic quantum orbits, so as to overcome the defect that the high-order harmonic generation process is driven by a strong laser field with a high photon number (usually driven by a classical field) and ignores the quantum properties of the driving light. Specifically, for infrared compressed electric fields of different quantum states, it can be decomposed into a coherent superposition of several coherent states, and the high-order harmonics generated by the electric field and the working gas in each coherent state are directly obtained during further calculation, and then the obtained high-order harmonics are superimposed by probability distribution in phase space, and finally the high-order harmonics generated by the infrared compressed electric fields of different quantum states and the working gas are further obtained, and the high-order harmonic time-frequency structure is obtained after time-frequency transformation, which is convenient for the subsequent regulation of the high-order harmonic quantum orbits, thereby achieving the purpose of regulating different quantum orbits of high-order harmonics. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A flow chart of an embodiment of the high-order harmonic quantum orbit control method provided by the present invention; Figure 2 A flow chart of another embodiment of the high-order harmonic quantum orbit control method provided by the present invention; Figure 3 A flowchart of another embodiment of the high-order harmonic quantum orbit control method provided by the present invention; Figure 4 A schematic diagram of the quantum state infrared phase compression electric field prepared by the present invention; Figure 5 A schematic diagram of the quantum state infrared amplitude compression electric field prepared by the present invention; Figure 6 A high-order harmonic spectrum diagram generated by the interaction of the phase-compressed infrared electric field and the working gas provided by the present invention; Figure 7 A spectrum diagram of high-order harmonics generated by the action of the amplitude-compressed infrared electric field and the working gas provided by the present invention; Figure 8 A time-frequency structure diagram of the high-order harmonic spectrum generated by the phase-compressed infrared electric field and the working gas provided by the present invention after time-frequency transformation; Fig. 9 A time-frequency structure diagram of the high-order harmonic spectrum generated by the action of the amplitude-compressed infrared electric field and the working gas after time-frequency transformation provided by the present invention; Fig.10 A principle block diagram of an embodiment of the high-order harmonic quantum orbit control device provided by the present invention; Fig.11 A schematic structural diagram of an embodiment of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0023] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or equipment.

[0024] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0025] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The present invention provides a high-order harmonic quantum orbit control method, device and electronic equipment, which are described below respectively.

[0027] like Figure 1 As shown, the present invention provides a high-order harmonic quantum orbit control method, comprising: S101. Control the optical parameter device to prepare infrared compressed electric fields with different quantum states.

[0028] It can be understood that optical parametric devices include optical parametric oscillators (OPOs) and optical parametric amplifiers (OPAs), and different quantum states can be phase compression states or amplitude compression states.

[0029] A parametric oscillator is a laser that uses the principle of optical parametric amplification to establish laser oscillation. It converts pump light into signal light and idle light through a nonlinear crystal (such as periodically poled lithium niobate crystal PPLN) to achieve laser oscillation.

[0030] As an important device in the field of optics, the optical parametric amplifier (OPA) works based on the parametric oscillation effect. Through materials such as nonlinear optical crystals, OPA can generate nonlinear coupling between photons, thereby amplifying optical signals.

[0031] S102, obtaining high-order harmonics generated by the infrared compression electric field and the working gas.

[0032] It can be understood that high-order harmonics refer to harmonics with frequencies higher than integer multiples of the fundamental frequency. In AC circuits, the fundamental frequency is usually 50Hz or 60Hz, and harmonics higher than integer multiples of the fundamental frequency are called high-order harmonics. For example, for a 50Hz power supply, the second harmonic frequency is 100Hz, the third harmonic frequency is 150Hz, and so on.

[0033] S103, performing time-frequency transformation on the high-order harmonics to obtain the time-frequency structure of the high-order harmonics, and obtaining the high-order harmonic quantum orbit control result based on the time-frequency structure.

[0034] It can be understood that the time-frequency structure is a structure that analyzes the signal in two dimensions: time and frequency. There are many types of time-frequency structures, including: short-time Fourier transform (STFT), wavelet transform, Gabor transform, bilinear time-frequency distribution, etc.

[0035] The high-order harmonic generation (HHG) process is driven by a strong laser field with a high photon number. It is usually driven by a classical field, and the quantum properties of the driving light are completely ignored. In recent years, with the rapid development of strong non-classical light, the research on strong field processes driven by quantum light has gradually begun. For example, strong compressed vacuum pulses (BSV) with picosecond and femtosecond durations have been experimentally proved, and their energies reach 10uJ and 350nJ respectively. The intensity of these quantum light sources is approaching the strong field state, which makes it possible to generate high-order harmonics by quantum compressed light drive. The present invention uses infrared compressed light with different quantum states to act on the working gas to achieve the regulation of different quantum orbits of high-order harmonics. The present invention is based on the regulation of high-order harmonic quantum orbits of quantum compressed light, which not only further studies the influence of the quantum light driving field on the characteristics of high-order harmonics, but also provides a new method for regulating high-order harmonic quantum orbits, realizing the regulation of high-order harmonic quantum regulations, breaking through the characteristic influence of high-order harmonic processes by quantum compressed light, and has far-reaching significance.

[0036] The high-order harmonic quantum orbit control method provided by the present invention can be executed by a program in a host computer. When the program in the host computer is running, a control instruction can be sent to an optical parametric oscillator and an optical parametric amplifier. The optical parametric oscillator and the optical parametric amplifier prepare infrared compression electric fields with different quantum states. After the infrared compression electric field acts on the working gas, high-order harmonics are generated. The host computer receives the high-order harmonics, performs time-frequency transformation on the high-order harmonics, obtains the time-frequency structure of the high-order harmonics, and obtains the high-order harmonic quantum orbit control result based on the time-frequency structure.

[0037] The present invention prepares infrared compressed electric fields in different quantum states, utilizes the infrared compressed electric fields to interact with working gases to generate high-order harmonics, further performs time-frequency transformation on the acquired high-order harmonics to obtain the high-order harmonic time-frequency structure, and displays the results of regulating the high-order harmonic quantum orbits. Specifically, for infrared compressed electric fields in different quantum states, they can be decomposed into a coherent superposition of several coherent states, and the high-order harmonics generated by the electric field and the working gas in each coherent state are directly obtained during further calculations, and the acquired high-order harmonics are then superimposed through probability distribution in phase space, and finally the high-order harmonics generated by the infrared compressed electric fields in different quantum states and the working gases are further obtained, and the high-order harmonic time-frequency structure is obtained after time-frequency transformation, which facilitates the subsequent regulation of the high-order harmonic quantum orbits.

[0038] In some embodiments, the infrared compressed electric fields of different quantum states include infrared phase compressed electric fields of different quantum states and infrared amplitude compressed electric fields of different quantum states. The corresponding high-order harmonic quantum orbit control method has the following process: Figure 2 shown.

[0039] In some embodiments, controlling an optical parametric device to prepare infrared compressed electric fields with different quantum states includes: Based on the infrared compressed electric field equation and the phase space probability distribution equation, the optical parametric device is controlled to prepare infrared compressed electric fields with different quantum states. The infrared compression electric field equation is: ; in, is the infrared compressed electric field, For time, is the frequency of the infrared compressed electric field, is the reduced Planck constant, is the envelope of the infrared compressed electric field, is a trapezoidal envelope with two rising cycle and two falling cycle edges and a six-cycle platform, is the dielectric constant in vacuum, is the quantized volume, and The coherence parameters are The real and imaginary parts of The phase space probability distribution equation is:

[0040] in, represents the phase space probability, is the compression parameter, when It indicates phase compression when When , it indicates amplitude compression. , is a given state The complex amplitude of .

[0041] Wherein, the infrared compressed electric field includes: phase compressed infrared electric field and amplitude compressed infrared electric field.

[0042] It is understandable that if Figure 3 As shown, the specific steps of preparing the infrared compressed electric field in different quantum states include: Squeezed light, as a typical light field in quantum optics, can first establish a quantum state infrared squeezed electric field; The quantum state infrared compression electric field equation is: ; in, For time, is the frequency of the compressed electric field, is the reduced Planck constant, The envelope of the overall electric field is a trapezoidal envelope with two rising cycle edges, two falling cycle edges, and a six-cycle platform. is the dielectric constant in vacuum, is the quantized volume, and is the relevant parameter The real and imaginary parts of For the quantum infrared squeezed electric field, it can be decomposed into the coherent superposition of several coherent electric fields, and the coherence parameter of each coherent state is It can be written as , for any compressed state , we can give its probability distribution equation in phase space.

[0043] According to the probability distribution equation and the infrared compression electric field equation, the phase compression infrared electric field and the amplitude compression infrared electric field can be obtained.

[0044] In quantum optics, coherent state light and squeezed state light are two typical light fields. When constructing squeezed state light, it is generally decomposed into a coherent superposition of several coherent states, and each coherent state parameter is has its probability distribution in phase space, given by Given, the expression of infrared compressed electric field in different quantum states is established , which facilitates the subsequent use of the prepared different quantum state infrared compression electric fields to interact with the working gas to generate high-order harmonics.

[0045] Specifically, the intensity at the center is 1×10 14 W / cm 2 , the wavelength is 1600nm, the total number of cycles of the entire electric field is 10 cycles, and the envelope of the overall electric field is a trapezoidal envelope with two rising cycles and two falling cycles edges, as well as a six-cycle platform. The images of the prepared infrared compressed electric fields in different quantum states are shown in Figure 1. Figure 4 and Figure 5 As shown, Figure 4 is the phase compressed infrared electric field, Figure 5 is the amplitude compressed infrared electric field.

[0046] In some embodiments, obtaining high-order harmonics generated by the infrared compression electric field and the working gas includes: According to the harmonic dipole moment expectation value equation, obtaining the higher harmonics generated by the infrared compression electric field and the working gas; Wherein, the expected value equation of the harmonic dipole moment is:

[0047] is the expected value of the harmonic dipole moment, corresponds to the compressed state The expected value of the dipole moment generated by the compression electric field and the working gas, and , here and represents the coherence parameter, Represents differential.

[0048] It is understandable that if Figure 2 As shown, the specific steps of obtaining the high-order harmonics generated by the infrared compression electric field in different quantum states (phase compression / amplitude compression) and the working gas include: The phase compression infrared electric field and the amplitude compression infrared electric field are used to act on the working gas respectively. The calculation model is the QSFA model. The phase compression infrared electric field and the amplitude compression infrared electric field act on the time-dependent Schrödinger equation in the process of the working gas respectively. The time-dependent Schrödinger equation is:

[0049] in, is the atomic potential, is the solution of the time-dependent Schrödinger equation, is the infrared compressed state electric field described above; Solving the time-dependent Schrödinger equation to obtain a harmonic dipole moment, and providing an expected value of the harmonic dipole moment; The harmonic dipole moment expectation equation is:

[0050] in , abbreviate the equation for the expected value of the dipole moment; The abbreviated harmonic dipole moment expectation equation is:

[0051] in corresponds to the compressed state The expected value of the dipole moment generated by the infrared compression electric field and the working gas, and .

[0052] According to the harmonic dipole moment expectation value equation, the higher harmonics generated by the phase compression infrared electric field and the amplitude compression infrared electric field acting on the working gas are obtained.

[0053] By establishing the time-dependent Schrödinger equation when the above-mentioned different quantum states of infrared electric fields, namely the phase compression electric field and the amplitude compression electric field, act on the working gas respectively, the expected value of the high-order harmonic dipole moment driven by the infrared compression electric field can be calculated, which is decomposed into the coherent superposition of the high-order harmonic dipole moments driven by several coherent state electric fields. The calculation model is based on the QSFA model of the strong field approximation (SFA) model in the quantum case, which can simulate the physical process when the infrared compression electric field acts on the working gas. It is also convenient for the subsequent time-frequency conversion processing of the obtained high-order harmonics generated by the different quantum states of infrared compression electric fields and the working gas.

[0054] Specifically, this embodiment calculates the high-order harmonics generated by the phase compression infrared electric field and the hydrogen atoms when the compression factor is 0.01, and obtains the high-order harmonic spectrum of the cut-off region around the 71st order, and calculates the high-order harmonics generated by the amplitude compression infrared electric field and the hydrogen atoms when the compression factor is -1, and obtains the high-order harmonic spectrum of the cut-off region around the 111th order, as shown in FIG. Figure 6 and 7 As shown in the figure, it is the high-order harmonic spectrum generated by the phase compression infrared electric field and the amplitude compression infrared electric field acting on the working gas respectively, where Figure 6 It is the high-order harmonic spectrum generated by the interaction between the phase-compressed infrared electric field and hydrogen atoms. Figure 7 This is the high-order harmonic spectrum produced by the interaction of amplitude compressed infrared electric field and hydrogen atoms.

[0055] In some embodiments, the transformation equation corresponding to the time-frequency transformation of the high-order harmonics is:

[0056] in, represents the time-frequency structure, is the harmonic order, is the expected value of the harmonic dipole moment, for The width of the Gaussian window at the moment, For time, is the frequency of the compressed electric field, .

[0057] It is understandable that if Figure 2 As shown, the high-order harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the high-order harmonics, and based on the time-frequency structure, the high-order harmonic quantum orbit control result is obtained. The specific steps include: The obtained phase compression infrared electric field and amplitude compression infrared electric field are respectively subjected to time-frequency transformation with the high-order harmonics generated by the working gas to obtain the time-frequency structure of the high-order harmonics, and the time-frequency structure is analyzed to obtain the high-order harmonic quantum orbit control result. The time-frequency transformation process uses Gabor transformation; The Gabor transform equation is:

[0058] in, is the harmonic order, is the expected value of the harmonic dipole moment, For time The width of the Gaussian window at this moment is set to , to balance the resolution between the time domain and the frequency domain; According to the time-frequency structure of the high-order harmonics, the high-order harmonic quantum orbit control result is obtained.

[0059] When performing time-frequency transformation, this embodiment uses Gabor transformation to accurately obtain the time-frequency structure of the high-order harmonic spectrum generated by the interaction of two different quantum state infrared compressed electric fields with hydrogen atoms. The obtained time-frequency structure diagram and quantum orbit control results are shown in Figure 2. Figure 8 and 9 As shown, Figure 8 This is the time-frequency structure of the high-order harmonics generated by the interaction of the phase-compressed infrared electric field and hydrogen atoms, showing that the long quantum orbits are significantly suppressed while the short quantum orbits are still retained. Fig. 9 This is the time-frequency structure of high-order harmonics generated by the interaction between the amplitude compressed infrared electric field and hydrogen atoms, showing that the short quantum orbits are significantly suppressed while the long quantum orbits are still retained.

[0060] In some embodiments, the working gas is an atomic gas.

[0061] It is understandable that any atomic gas can be used. The working gas in this embodiment is hydrogen atomic gas, whose ground state ionization energy is is 0.5 atomic unit; the central wavelength of the infrared electric field is 1600 nanometers and the intensity is 1×10 14 W / cm 2 .

[0062] like Fig.10 As shown, the present invention also provides a high-order harmonic quantum orbit control device 1000, comprising: The electric field control module 10001 is used to control the optical parameter device to prepare infrared compressed electric fields with different quantum states; The harmonic acquisition module 1002 is used to acquire the high-order harmonics generated by the infrared compression electric field and the working gas; The control result generating module 1003 is used to perform time-frequency transformation on the high-order harmonics to obtain the time-frequency structure of the high-order harmonics, and obtain the high-order harmonic quantum orbit control result based on the time-frequency structure.

[0063] The high-order harmonic quantum orbit control device provided in the above embodiment can implement the technical solution described in the above embodiment of the high-order harmonic quantum orbit control method. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above embodiment of the high-order harmonic quantum orbit control method, which will not be repeated here.

[0064] like Fig.11 As shown, the present invention also provides an electronic device 1100 , which may be a quantum communication device. The electronic device 1100 includes a processor 1101 , a memory 1102 , and a display 1103 . Fig.11 Only some components of the electronic device 1100 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0065] In some embodiments, the memory 1102 may be an internal storage unit of the electronic device 1100, such as a hard disk or memory of the electronic device 1100. In other embodiments, the memory 1102 may also be an external storage device of the electronic device 1100, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc., equipped on the electronic device 1100.

[0066] Furthermore, the memory 1102 may include both an internal storage unit of the electronic device 1100 and an external storage device. The memory 1102 is used to store application software installed in the electronic device 1100 and various data.

[0067] In some embodiments, the processor 1101 may be a central processing unit (CPU), a microprocessor or other data processing chip, which is used to run the program code or process data stored in the memory 1102, such as the high-order harmonic quantum orbit control method of the present invention.

[0068] In some embodiments, the display 1103 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, etc. The display 1103 is used to display information on the electronic device 1100 and to display a visual user interface. The components 1101-1103 of the electronic device 1100 communicate with each other via a system bus.

[0069] In some embodiments of the present invention, when the processor 1101 executes the high-order harmonic quantum orbit control program in the memory 1102, the following steps may be implemented: Controlling optical parametric devices to prepare infrared compressed electric fields with different quantum states; Acquiring high-order harmonics generated by the infrared compression electric field and the working gas; The high-order harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the high-order harmonics, and based on the time-frequency structure, the high-order harmonic quantum orbit control result is obtained.

[0070] It should be understood that: when the processor 1101 executes the high-order harmonic quantum orbit control program in the memory 1102, in addition to the above functions, other functions can also be realized. For details, please refer to the description of the corresponding method embodiment above.

[0071] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to perform the high-order harmonic quantum orbit control method provided by the above methods, the method comprising: Controlling optical parametric devices to prepare infrared compressed electric fields with different quantum states; Acquiring high-order harmonics generated by the infrared compression electric field and the working gas; The high-order harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the high-order harmonics, and based on the time-frequency structure, the high-order harmonic quantum orbit control result is obtained.

[0072] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0073] The above is a detailed introduction to the high-order harmonic quantum orbit control method, device and electronic device provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A high-order harmonic quantum orbit control method, characterized in that: include: Controlling optical parametric devices to prepare infrared compressed electric fields with different quantum states; Acquiring high-order harmonics generated by the infrared compression electric field and the working gas; The high-order harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the high-order harmonics, and based on the time-frequency structure, the high-order harmonic quantum orbit control result is obtained.

2. The high-order harmonic quantum orbit control method according to claim 1, characterized in that: The infrared compression electric field includes: a phase compression infrared electric field and an amplitude compression infrared electric field.

3. The high-order harmonic quantum orbit control method according to claim 2, characterized in that: Controlling optical parametric devices to prepare infrared compressed electric fields with different quantum states, including: Based on the infrared compressed electric field equation and the phase space probability distribution equation, the optical parametric device is controlled to prepare infrared compressed electric fields with different quantum states. The infrared compression electric field equation is: ； in, is the infrared compressed electric field, For time, is the frequency of the infrared compressed electric field, is the reduced Planck constant, is the envelope of the infrared compressed electric field, is a trapezoidal envelope with two rising cycle and two falling cycle edges and a six-cycle platform, is the dielectric constant in vacuum, is the quantized volume, and The coherence parameters are The real and imaginary parts of The phase space probability distribution equation is: in, represents the phase space probability, is the compression parameter, when It indicates phase compression when When , it indicates amplitude compression. , is a given state The complex amplitude of .

4. The high-order harmonic quantum orbit control method according to claim 1, characterized in that: Obtaining high-order harmonics generated by the infrared compression electric field and the working gas, including: According to the harmonic dipole moment expectation value equation, obtaining the higher harmonics generated by the infrared compression electric field and the working gas; Wherein, the expected value equation of the harmonic dipole moment is: is the expected value of the harmonic dipole moment, corresponds to the compressed state The expected value of the dipole moment generated by the compression electric field and the working gas, and .

5. The high-order harmonic quantum orbit control method according to claim 1, characterized in that: The transformation equation corresponding to the time-frequency transformation of the high-order harmonics is: in, represents the time-frequency structure, is the harmonic order, is the expected value of the harmonic dipole moment, for The width of the Gaussian window at the moment, For time, is the frequency of the compressed electric field.

6. The high-order harmonic quantum orbit control method according to claim 5, characterized in that: 。 7. The high-order harmonic quantum orbit control method according to any one of claims 1 to 6, characterized in that: The working gas is atomic gas.

8. A high-order harmonic quantum orbit control device, characterized in that: include: An electric field control module, used to control the optical parameter device to prepare infrared compressed electric fields with different quantum states; A harmonic acquisition module, used to acquire high-order harmonics generated by the infrared compression electric field and the working gas; The control result generating module is used to perform time-frequency transformation on the high-order harmonics to obtain the time-frequency structure of the high-order harmonics, and obtain the high-order harmonic quantum orbit control result based on the time-frequency structure.

9. An electronic device, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the high-order harmonic quantum orbit control method as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the high-order harmonic quantum orbit control method as described in any one of claims 1 to 7 are implemented.

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