High harmonic quantum orbital control method and device, and electronic equipment

Abstract

The application provides a high-harmonic quantum orbit control method and device and electronic equipment, and belongs to the technical field of strong field high-harmonic, and the method comprises the following steps: controlling an optical parametric device to prepare infrared compressed electric fields with different quantum states; obtaining high harmonics generated by the interaction between the infrared compressed electric fields and working gas; performing time-frequency transformation on the high harmonics to obtain the time-frequency structure of the high harmonics, and obtaining the high-harmonic quantum orbit control result based on the time-frequency structure. The infrared compressed electric fields with different quantum states can be decomposed into coherent superpositions of several coherent states, and the high harmonics generated by the interaction between the electric field under each coherent state and the working gas can be directly obtained by further calculation. After time-frequency transformation is performed on the obtained high harmonics, the time-frequency structure of the high harmonics is obtained, and the high-harmonic quantum orbit control result is displayed.

Description

Technical Field

[0001] This invention relates to the field of strong field high harmonic technology, specifically to a method, device, and electronic device for controlling high harmonic quantum orbits. Background Technology

[0002] Higher-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 plateau structure, HHG can serve as the fundamental light source for synthesizing attosecond pulses. Attosecond pulses have extreme temporal and spatial resolution and are of great importance in the study of electron motion within molecules and atoms, as well as in ultrafast electron dynamic imaging.

[0003] Any harmonic below the cutoff region consists of two main quantum orbitals: short orbitals and long orbitals. Manipulating these two quantum orbitals is crucial in strong-field physics and attosecond science. Traditional methods for manipulating the quantum orbitals of higher harmonics mainly involve manipulating macroscopic phase-matching conditions and using non-uniform or orthogonally polarized bicolor fields. These methods can only select the long or short orbitals of certain orders of harmonics and cannot achieve manipulation of different quantum orbitals of higher harmonics. Summary of the Invention

[0004] In view of this, it is necessary to provide a method, device and electronic device for controlling higher harmonic quantum orbits, so as to achieve the purpose of controlling different quantum orbits of higher harmonics.

[0005] To address the aforementioned problems, in a first aspect, the present invention provides a method for controlling high-order harmonic quantum orbits, comprising:

[0006] Infrared compressed electric fields with different quantum states can be prepared by controlling optical parametric devices;

[0007] The high-order harmonics generated by the interaction between the infrared compressed electric field and the working gas are obtained;

[0008] The higher harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the higher harmonics, and the quantum orbit control results of the higher harmonics are obtained based on the time-frequency structure.

[0009] In one possible implementation, the infrared compression electric field includes: a phase-compressed infrared electric field and an amplitude-compressed infrared electric field.

[0010] In one possible implementation, controlling an optical parametric device to prepare an infrared squeezed electric field with different quantum states includes:

[0011] Based on the infrared compression electric field equation and the phase space probability distribution equation, an infrared compression electric field with different quantum states is prepared by controlling an optical parametric device.

[0012] The infrared compression electric field equation is:

[0013] ;

[0014] in, For infrared compressed electric field, For time, The frequency of the infrared compressed electric field, It is the reduced Planck constant. The envelope of the infrared compressed electric field. It is a trapezoidal envelope with two rising cycles, two falling cycles at the edges, and a six-cycle plateau. The dielectric constant in vacuum. For quantized volume, and These are the coherence parameters. The real and imaginary parts;

[0015] The phase space probability distribution equation is:

[0016]

[0017] in, Represents the phase space probability. These are compression parameters, when Time indicates phase compression, when Time indicates amplitude compression. , It is a given state The complex amplitude.

[0018] In one possible implementation, obtaining the higher harmonics generated by the interaction of the infrared compressed electric field and the working gas includes:

[0019] According to the harmonic dipole moment expectation equation, the higher harmonics generated by the interaction between the infrared compressed electric field and the working gas are obtained;

[0020] The equation for the expected value of the harmonic dipole moment is as follows:

[0021]

[0022] This represents the expected value of the harmonic dipole moment. To correspond to the compressed state The expected value of the dipole moment generated by the interaction of the compressive electric field and the working gas, and .

[0023] In one possible implementation, the transformation equation corresponding to the time-frequency transformation of the higher harmonics is:

[0024]

[0025] in, Represents the time-frequency structure. The harmonic order is... This represents the expected value of the harmonic dipole moment. for The width of the Gaussian window at any given time. For time, is the frequency of the compressed electric field.

[0026] In one possible implementation, .

[0027] In one possible implementation, the working gas is an atomic gas.

[0028] Secondly, the present invention also provides a high-order harmonic quantum orbit manipulation device, comprising:

[0029] An electric field control module is used to control optical parametric devices to prepare infrared compressed electric fields with different quantum states;

[0030] The harmonic acquisition module is used to acquire the higher harmonics generated by the interaction between the infrared compressed electric field and the working gas;

[0031] The control result generation module is used to perform time-frequency transformation on the higher harmonics to obtain the time-frequency structure of the higher harmonics, and based on the time-frequency structure, obtain the control result of the higher harmonic quantum orbit.

[0032] Thirdly, the present invention also provides an electronic device, including a memory and a processor, wherein,

[0033] The memory is used to store programs;

[0034] The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the higher harmonic quantum orbit manipulation method as described in any of the preceding claims.

[0035] Fourthly, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the higher harmonic quantum orbit manipulation method as described in any of the preceding claims.

[0036] The beneficial effects of the above implementation method are as follows: This invention prepares infrared compressed electric fields of different quantum states, utilizes the interaction of these infrared compressed electric fields with the working gas to generate higher harmonics, and further performs time-frequency transformation on the obtained higher harmonics to obtain their time-frequency structure, thus showing the results of controlling the quantum orbits of higher harmonics. This overcomes the defect that the generation process of higher harmonics is driven by a strong laser field with a high number of photons (usually driven by a classical field), which ignores the quantum properties of the driving light. Specifically, for infrared compressed electric fields of different quantum states, they can be decomposed into a coherent superposition of several coherent states. In further calculations, the higher harmonics generated by the interaction of the electric field with the working gas in each coherent state are directly obtained. The obtained higher harmonics are then superimposed through probability distribution in phase space to finally obtain the higher harmonics generated by the interaction of infrared compressed electric fields of different quantum states with the working gas. After time-frequency transformation, the time-frequency structure of the higher harmonics is obtained, which facilitates the subsequent control of the quantum orbits of higher harmonics, thereby achieving the purpose of controlling different quantum orbits of higher harmonics. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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 effort.

[0038] Figure 1 A flowchart of an embodiment of the high-order harmonic quantum orbit manipulation method provided by the present invention;

[0039] Figure 2 A flowchart of another embodiment of the high-order harmonic quantum orbit manipulation method provided by the present invention;

[0040] Figure 3 A flowchart of yet another embodiment of the high-order harmonic quantum orbit manipulation method provided by the present invention;

[0041] Figure 4 A schematic diagram of the infrared phase-compressed electric field of the quantum state prepared according to the present invention;

[0042] Figure 5 A schematic diagram of the infrared amplitude compression electric field of the quantum state prepared according to the present invention;

[0043] Figure 6 The high-order harmonic spectrum diagram generated by the interaction of the phase-compressed infrared electric field and the working gas provided by this invention;

[0044] Figure 7 The high-order harmonic spectrum diagram provided by this invention is generated by the interaction of an amplitude-compressed infrared electric field and a working gas.

[0045] Figure 8 The time-frequency structure diagram of the high-order harmonic spectrum generated by the interaction of the phase-compressed infrared electric field and the working gas, provided by the present invention, after time-frequency transformation;

[0046] Figure 9 This invention provides a time-frequency structure diagram of the high-order harmonic spectrum generated by the interaction of an amplitude-compressed infrared electric field and a working gas after time-frequency transformation.

[0047] Figure 10 A schematic diagram of an embodiment of the high-order harmonic quantum orbit control device provided by the present invention;

[0048] Figure 11 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0050] In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0051] In this embodiment of the invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, apparatus, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to such process, method, product or device.

[0052] The naming or numbering of 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 order 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 effect can be achieved.

[0053] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0054] This invention provides a method, device, and electronic device for controlling high-order harmonic quantum orbits, which will be described below.

[0055] like Figure 1 As shown, this invention provides a method for controlling higher harmonic quantum orbits, comprising:

[0056] S101. Control optical parametric devices to prepare infrared compressed electric fields with different quantum states.

[0057] It is understandable that optical parametric devices include optical parametric oscillators (OPOs) and optical parametric amplifiers (OPAs), and different quantum states can be phase-squeezed states or amplitude-squeezed states.

[0058] A parametric oscillator is a laser that uses the principle of optical parametric amplification to establish laser oscillation. It uses a nonlinear crystal (such as periodically polarized lithium niobate crystal PPLN) to convert pump light into signal light and idle light to achieve laser oscillation.

[0059] Optical parametric amplifiers (OPA), as an important device in the field of optics, operate based on the parametric oscillation effect. Through materials such as nonlinear optical crystals, OPAs can generate nonlinear coupling between photons, thereby amplifying optical signals.

[0060] S102. Obtain the high-order harmonics generated by the interaction between the infrared compressed electric field and the working gas.

[0061] As can be understood, higher harmonics refer to harmonics whose frequencies are integer multiples of the fundamental frequency. In AC circuits, the fundamental frequency is typically 50Hz or 60Hz, while harmonics that are integer multiples of the fundamental frequency are called higher harmonics. For example, for a 50Hz power supply, its second harmonic frequency is 100Hz, its third harmonic frequency is 150Hz, and so on.

[0062] S103. Perform time-frequency transformation on the higher harmonics to obtain the time-frequency structure of the higher harmonics, and obtain the quantum orbit control result of the higher harmonics based on the time-frequency structure.

[0063] As can be understood, time-frequency structure refers to the structure for analyzing a signal in both time and frequency dimensions. There are various types of time-frequency structures, which may include: Short-Time Fourier Transform (STFT), Wavelet Transform, Gabor Transform, Bilinear Time-Frequency Distribution, etc.

[0064] Higher harmonic generation (HHG) processes are driven by strong laser fields with high photon numbers, typically using classical fields that completely ignore the quantum properties of the driving light. However, with the rapid development of strong non-classical light in recent years, research on strong field processes driven by quantum light has gradually begun. For example, strong compressed vacuum pulses (BSVs) with picosecond and femtosecond durations have been experimentally demonstrated, reaching energies of 10 μJ and 350 NJ, respectively. The intensity of these quantum light sources is approaching the strong field state, making it possible to generate higher harmonics using quantum compressed light. This invention utilizes the interaction of infrared compressed light with different quantum states and a working gas to achieve the manipulation of different quantum orbits of higher harmonics. Based on the manipulation of higher harmonic quantum orbits by quantum compressed light, this invention not only further investigates the influence of the quantum light driving field on the characteristics of higher harmonics but also presents a new method for manipulating the quantum orbits of higher harmonics, achieving quantum-defined control of higher harmonics. This breakthrough overcomes the characteristic influence of higher harmonic processes driven by quantum compressed light, and has profound significance.

[0065] The high-order harmonic quantum orbit control method provided by this invention can be executed by a program in a host computer. When the program in the host computer is running, it can send control commands to an optical parametric oscillator and an optical parametric amplifier. The optical parametric oscillator and the optical parametric amplifier prepare infrared compressed electric fields with different quantum states. After the infrared compressed electric field interacts with 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 to obtain 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.

[0066] This invention prepares infrared compressed electric fields with different quantum states, utilizes the interaction of these fields with a working gas to generate higher harmonics, and further performs time-frequency transformation on the acquired higher harmonics to obtain their time-frequency structure, demonstrating the results of controlling the quantum orbits of these higher harmonics. Specifically, for infrared compressed electric fields with different quantum states, they can be decomposed into a coherent superposition of several coherent states. Further calculations directly obtain the higher harmonics generated by the interaction of the electric field with the working gas in each coherent state. These higher harmonics are then superimposed using probability distributions in phase space to ultimately obtain the higher harmonics generated by the interaction of the infrared compressed electric fields with different quantum states and the working gas. After time-frequency transformation, the time-frequency structure of these higher harmonics is obtained, facilitating subsequent control of the quantum orbits of these higher harmonics.

[0067] In some embodiments, the infrared compression electric fields of different quantum states include infrared phase compression electric fields of different quantum states and infrared amplitude compression electric fields of different quantum states. The corresponding flow of the higher harmonic quantum orbit manipulation method is as follows: Figure 2 As shown.

[0068] In some embodiments, controlling an optical parametric device to prepare an infrared compressed electric field with different quantum states includes:

[0069] Based on the infrared compression electric field equation and the phase space probability distribution equation, an infrared compression electric field with different quantum states is prepared by controlling an optical parametric device.

[0070] The infrared compression electric field equation is:

[0071] ;

[0072] in, For infrared compressed electric field, For time, The frequency of the infrared compressed electric field, It is the reduced Planck constant. The envelope of the infrared compressed electric field. It is a trapezoidal envelope with two rising cycles, two falling cycles at the edges, and a six-cycle plateau. The dielectric constant in vacuum. For quantized volume, and These are the coherence parameters. The real and imaginary parts;

[0073] The phase space probability distribution equation is:

[0074]

[0075] in, Represents the phase space probability. These are compression parameters, when Time indicates phase compression, when Time indicates amplitude compression. , It is a given state The complex amplitude.

[0076] The infrared compression electric field includes a phase-compressed infrared electric field and an amplitude-compressed infrared electric field.

[0077] It is understandable that, such as Figure 3 As shown, the specific steps for preparing the infrared compressed electric fields of the different quantum states include:

[0078] Squeezed light, as a typical light field in quantum optics, can first establish a quantum state infrared squeezed electric field;

[0079] The equation for the quantum state infrared squeezed electric field is:

[0080] ;

[0081] in, For time, The frequency of the squeezed electric field is... It is the reduced Planck constant. The envelope of the overall electric field is a trapezoidal envelope with two rising periods and two falling periods at the edges, and a six-period plateau. The dielectric constant in vacuum. For quantized volume, and Coherence parameters The real and imaginary parts;

[0082] For a quantum state infrared squeezed electric field, it can be decomposed into a coherent superposition of several coherent electric fields, with each coherent state having a coherence parameter. Can be written as For any compressible state The probability distribution equation of this can be given in phase space.

[0083] Based on the probability distribution equation and the infrared compression electric field equation, the phase-compressed infrared electric field and the amplitude-compressed infrared electric field can be obtained.

[0084] In quantum optics, coherent light and squeezed light are two typical optical fields. When constructing squeezed light, it is generally decomposed into a coherent superposition of several coherent states, and the parameters of each coherent state are... Each has its own probability distribution in phase space, by This provides an expression for the infrared compressed electric field of different quantum states. This facilitates the subsequent generation of higher harmonics by interacting the prepared infrared compressed electric field with the working gas using different quantum states.

[0085] Specifically, the intensity at the center is 1×10. 14 W / cm 2 The wavelength is 1600 nm, and the total number of periods in the electric field is 10. The envelope of the overall electric field is a trapezoidal envelope with two rising periods, two falling periods at the edges, and a six-period plateau. Images of the infrared compressed electric fields of different quantum states are shown below. Figure 4 and Figure 5 As shown, where Figure 4 To compress the infrared electric field for phase compression, Figure 5 The infrared electric field is compressed to increase the amplitude.

[0086] In some embodiments, acquiring the higher harmonics generated by the interaction of the infrared compressed electric field and the working gas includes:

[0087] According to the harmonic dipole moment expectation equation, the higher harmonics generated by the interaction between the infrared compressed electric field and the working gas are obtained;

[0088] The equation for the expected value of the harmonic dipole moment is as follows:

[0089]

[0090] This represents the expected value of the harmonic dipole moment. To correspond to the compressed state The expected value of the dipole moment generated by the interaction of the compressive electric field and the working gas, and , here and Represents the coherence parameter. It represents the differential.

[0091] It is understandable that, such as Figure 2 As shown, the specific steps for obtaining the higher harmonics generated by the interaction of the infrared compressed electric field of different quantum states (phase compression / amplitude compression) with the working gas include:

[0092] The phase-compressed infrared electric field and the amplitude-compressed infrared electric field interact with the working gas respectively. The calculation model is the QSFA model, which is the time-dependent Schrödinger equation for the phase-compressed infrared electric field and the amplitude-compressed infrared electric field acting on the working gas respectively.

[0093] The time-dependent Schrödinger equation is:

[0094]

[0095] in, It is atomic potential. It is a solution to the time-dependent Schrödinger equation. It is the infrared squeezed state electric field mentioned above;

[0096] The harmonic dipole moment is obtained by solving the time-dependent Schrödinger equation, and the expected value of the harmonic dipole moment is given.

[0097] The equation for the desired value of the harmonic dipole moment is as follows:

[0098]

[0099] in The equation for the expected value of the dipole moment is simplified.

[0100] The simplified equation for the expected value of the harmonic dipole moment is as follows:

[0101]

[0102] in To correspond to the compressed state The expected value of the dipole moment generated by the interaction of the infrared compressed electric field and the working gas, and .

[0103] Based on the harmonic dipole moment expectation equation, the higher harmonics generated by the interaction of the phase-compressed infrared electric field and the amplitude-compressed infrared electric field with the working gas are obtained.

[0104] By establishing time-dependent Schrödinger equations for the interaction of different quantum state infrared electric fields (phase-compressing electric field and amplitude-compressing electric field) with the working gas, the expected value of the higher harmonic dipole moment driven by the infrared compressing electric field can be calculated. This is decomposed into the coherent superposition of higher harmonic dipole moments driven by several coherent electric fields. The calculation model is a QSFA model based on the strong field approximation (SFA) model in the quantum case, which can simulate the physical process when the infrared compressing electric field interacts with the working gas. This also facilitates subsequent time-frequency transformation processing of the higher harmonics generated by the interaction of different quantum state infrared compressing electric fields with the working gas.

[0105] Specifically, this embodiment calculates the high-order harmonics generated by the interaction of the phase-compressed infrared electric field with hydrogen atoms at a compression factor of 0.01, obtaining the high-order harmonic spectrum with a cutoff region of approximately 71st order. It also calculates the high-order harmonics generated by the interaction of the amplitude-compressed infrared electric field with hydrogen atoms at a compression factor of -1, obtaining the high-order harmonic spectrum with a cutoff region of approximately 111th order. Figure 6 and 7 The image shows the high-order harmonic spectrum generated by the interaction of the phase-compressed infrared electric field and the amplitude-compressed infrared electric field with the working gas, respectively. Figure 6 The higher harmonic spectrum is generated by the interaction of a phase-compressed infrared electric field with hydrogen atoms. Figure 7 The higher harmonic spectrum is generated by the interaction of the amplitude-compressed infrared electric field with hydrogen atoms.

[0106] In some embodiments, the transformation equation corresponding to the time-frequency transformation of the higher harmonics is:

[0107]

[0108] in, Represents the time-frequency structure. The harmonic order is... This represents the expected value of the harmonic dipole moment. for The width of the Gaussian window at any given time. For time, The frequency of the squeezed electric field is... .

[0109] It is understandable that, such as Figure 2As shown, the higher harmonics are subjected to time-frequency transformation to obtain their time-frequency structure, and based on this structure, the quantum orbit manipulation results of the higher harmonics are obtained. Specific steps include:

[0110] The acquired phase-compressed infrared electric field and amplitude-compressed infrared electric field are respectively subjected to time-frequency transformation with the working gas to generate higher harmonics, thereby obtaining the time-frequency structure of the higher harmonics. The time-frequency structure is then analyzed to obtain the quantum orbit control results of the higher harmonics. The time-frequency transformation process uses Gabor transform.

[0111] The Gabor transform equation is:

[0112]

[0113] in, The harmonic order is... The desired value of the harmonic dipole moment is... For time The width of the Gaussian window at any given time is set to... This is used to balance the resolution between the time domain and the frequency domain;

[0114] Based on the time-frequency structure of the higher harmonics, the quantum orbit control results of the higher harmonics are obtained.

[0115] In performing time-frequency transformation, this embodiment uses Gabor transformation to accurately obtain the time-frequency structure of the higher 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 manipulation results are as follows: Figure 8 and 9 As shown, where Figure 8 The time-frequency structure of the higher harmonics generated by the interaction of the phase-compressed infrared electric field with hydrogen atoms shows that long quantum orbitals are significantly suppressed while short quantum orbitals are still preserved. Figure 9 The time-frequency structure of the high-order harmonics generated by the interaction of the amplitude-compressed infrared electric field with hydrogen atoms shows that short quantum orbits are significantly suppressed while long quantum orbits are still preserved.

[0116] In some embodiments, the working gas is an atomic gas.

[0117] It is understood that any atomic gas can be used; in this embodiment, the working gas is hydrogen gas, whose ground-state ionization energy is... It has a wavelength of 0.5 atomic units; the center wavelength of the infrared electric field is 1600 nanometers, and the intensity is 1×10⁻⁶. 14 W / cm 2 .

[0118] like Figure 10 As shown, the present invention also provides a high-order harmonic quantum orbit control device 1000, comprising:

[0119] Electric field control module 10001 is used to control optical parametric devices to prepare infrared compressed electric fields with different quantum states;

[0120] Harmonic acquisition module 1002 is used to acquire the higher harmonics generated by the interaction between the infrared compressed electric field and the working gas;

[0121] The modulation result generation module 1003 is used to perform time-frequency transformation on the higher harmonics to obtain the time-frequency structure of the higher harmonics, and based on the time-frequency structure, obtain the higher harmonic quantum orbit modulation result.

[0122] The higher harmonic quantum orbit control device provided in the above embodiments can realize the technical solutions described in the embodiments of the higher harmonic quantum orbit control method. The specific implementation principles of each module or unit can be found in the corresponding content of the embodiments of the higher harmonic quantum orbit control method, which will not be repeated here.

[0123] like Figure 11 As shown, the present invention also provides an electronic device 1100, which can be a quantum communication device. The electronic device 1100 includes a processor 1101, a memory 1102, and a display 1103. Figure 11 Only some components of the electronic device 1100 are shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.

[0124] In some embodiments, memory 1102 may be an internal storage unit of electronic device 1100, such as a hard disk or memory of electronic device 1100. In other embodiments, memory 1102 may also be an external storage device of electronic device 1100, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 1100.

[0125] Furthermore, the memory 1102 may include both internal storage units of the electronic device 1100 and external storage devices. The memory 1102 is used to store application software and various types of data installed on the electronic device 1100.

[0126] In some embodiments, processor 1101 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 1102 or process data, such as the high-order harmonic quantum orbit manipulation method of the present invention.

[0127] In some embodiments, display 1103 may be an LED display, a liquid crystal display, a touch-screen liquid crystal display, etc. Display 1103 is used to display information from electronic device 1100 and to display a visual user interface. Components 1101-1103 of electronic device 1100 communicate with each other via a system bus.

[0128] In some embodiments of the present invention, when the processor 1101 executes the high-order harmonic quantum orbit manipulation program in the memory 1102, the following steps can be implemented:

[0129] Infrared compressed electric fields with different quantum states can be prepared by controlling optical parametric devices;

[0130] The high-order harmonics generated by the interaction between the infrared compressed electric field and the working gas are obtained;

[0131] The higher harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the higher harmonics, and the quantum orbit control results of the higher harmonics are obtained based on the time-frequency structure.

[0132] 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 functions mentioned above, it can also perform other functions, as detailed in the description of the corresponding method embodiments above.

[0133] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the high-order harmonic quantum orbit manipulation method provided by the methods described above, the method comprising:

[0134] Infrared compressed electric fields with different quantum states can be prepared by controlling optical parametric devices;

[0135] The high-order harmonics generated by the interaction between the infrared compressed electric field and the working gas are obtained;

[0136] The higher harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the higher harmonics, and the quantum orbit control results of the higher harmonics are obtained based on the time-frequency structure.

[0137] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0138] The above provides a detailed description of the high-order harmonic quantum orbit control method, device, and electronic equipment provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, those skilled in the art will recognize that there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A method for controlling high-order harmonic quantum orbits, characterized in that, include: Infrared compressed electric fields with different quantum states can be prepared by controlling optical parametric devices; The high-order harmonics generated by the interaction between the infrared compressed electric field and the working gas are obtained; The higher harmonics are subjected to time-frequency transformation to obtain the time-frequency structure of the higher harmonics, and the quantum orbit control results of the higher harmonics are obtained based on the time-frequency structure. The infrared compression electric field includes: a phase-compressed infrared electric field and an amplitude-compressed infrared electric field; The time-frequency structure of higher harmonics includes: The time-frequency structure of higher harmonics generated by the interaction of a phase-compressed infrared electric field with hydrogen atoms is used to show that long quantum orbits are significantly suppressed while short quantum orbits are still preserved. The time-frequency structure of high-order harmonics generated by the interaction of the amplitude-compressed infrared electric field with hydrogen atoms is used to show that short quantum orbits are significantly suppressed while long quantum orbits are still preserved.

2. The method for controlling higher harmonic quantum orbits according to claim 1, characterized in that, The preparation of infrared compressed electric fields with different quantum states by controlling optical parametric devices includes: Based on the infrared compression electric field equation and the phase space probability distribution equation, an infrared compression electric field with different quantum states is prepared by controlling an optical parametric device. The infrared compression electric field equation is: ； in, For infrared compressed electric field, For time, The frequency of the infrared compressed electric field, It is the reduced Planck constant. The envelope of the infrared compressed electric field. It is a trapezoidal envelope with two rising cycles, two falling cycles at the edges, and a six-cycle plateau. Let V be the dielectric constant in vacuum, and V be the quantized volume. and These are the coherence parameters. The real and imaginary parts; The phase space probability distribution equation is: in, Represents the phase space probability. These are compression parameters, when Time indicates phase compression, when Time indicates amplitude compression. , It is a given state The complex amplitude.

3. The method for controlling higher harmonic quantum orbits according to claim 1, characterized in that, Acquiring the higher harmonics generated by the interaction of the infrared compressed electric field and the working gas includes: According to the harmonic dipole moment expectation equation, the higher harmonics generated by the interaction between the infrared compressed electric field and the working gas are obtained; The equation for the expected value of the harmonic dipole moment is as follows: This represents the expected value of the harmonic dipole moment. To correspond to the compressed state The expected value of the dipole moment generated by the interaction between the compressive electric field and the working gas. P ( α ) represents the phase space probability.

4. The method for controlling higher harmonic quantum orbits according to claim 1, characterized in that, The transformation equation corresponding to the time-frequency transformation of the higher harmonics is: in, Represents the time-frequency structure. The harmonic order is... This represents the expected value of the harmonic dipole moment. for The width of the Gaussian window at any given time. For time, is the frequency of the compressed electric field.

5. The method for controlling higher harmonic quantum orbits according to claim 4, characterized in that, 。 6. The method for controlling higher harmonic quantum orbits according to any one of claims 1-5, characterized in that, The working gas is an atomic gas.

7. A high-order harmonic quantum orbit control device, characterized in that, include: An electric field control module is used to control optical parametric devices to prepare infrared compressed electric fields with different quantum states; The harmonic acquisition module is used to acquire the higher harmonics generated by the interaction between the infrared compressed electric field and the working gas; The modulation result generation module is used to perform time-frequency transformation on the higher harmonics to obtain the time-frequency structure of the higher harmonics, and based on the time-frequency structure, obtain the quantum orbit modulation result of the higher harmonics. The infrared compression electric field includes: a phase-compressed infrared electric field and an amplitude-compressed infrared electric field; The time-frequency structure of higher harmonics includes: The time-frequency structure of higher harmonics generated by the interaction of a phase-compressed infrared electric field with hydrogen atoms is used to show that long quantum orbits are significantly suppressed while short quantum orbits are still preserved. The time-frequency structure of high-order harmonics generated by the interaction of the amplitude-compressed infrared electric field with hydrogen atoms is used to show that short quantum orbits are significantly suppressed while long quantum orbits are still preserved.

8. An electronic device, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the higher harmonic quantum orbit manipulation method as described in any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the high-order harmonic quantum orbit manipulation method as described in any one of claims 1 to 6.

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