Device and method for measuring high-order coherence degree of hyper-chaotic light quantum noise

Abstract

The invention discloses a hyper-chaotic light quantum noise high-order coherence degree measuring device and method, and relates to the technical field of quantum optics. The device comprises a hyperchaotic light source preparation part and a quantum noise high-order coherence degree measurement part, the hyperchaotic light source preparation part comprises a first polarization beam splitter and a spatial light modulator which are sequentially arranged on an output light path of a first laser generation module; the first reflecting mirror and the second reflecting mirror are sequentially arranged along a transmission light path modulated by the spatial light modulator; according to the quantum noise high-order coherence degree measurement part, a second polarization beam splitter is arranged on an output light path of a second laser generation module, and a first half-wave plate is arranged between the second polarization beam splitter and a second reflector; and the second half-wave plate and the balanced homodyne detection acquisition module are sequentially arranged along the transmission light path processed by the second polarization beam splitter. According to the invention, the problems of unobvious bunching characteristic, complex structure, unstable system, low signal-to-noise ratio of weak quantum signals and poor amplification effect during preparation of the existing hyper-chaotic light source can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of quantum optics, and in particular to a device and method for measuring high-order coherence of hyperchaotic light quantum noise. Background Art

[0002] With the development of quantum optics, hyperchaotic light is more difficult to decipher than simple chaotic signals due to its high unpredictability and complexity. It has important applications in the field of secure optical communications. However, most research has been conducted on generating hyperchaotic light through nonlinear interactions. In addition to its extremely low efficiency, the harsh experimental conditions also greatly restrict the preparation of hyperchaos. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for measuring high-order coherence of hyperchaotic light quantum noise, which can solve the problems of unclear bunching characteristics, complex structure, low signal-to-noise ratio of weak quantum signals and poor amplification effect when preparing existing hyperchaotic light sources.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A hyperchaotic light quantum noise high-order coherence measurement device, comprising: a hyperchaotic light source preparation part and a quantum noise high-order coherence measurement part;

[0006] The hyperchaotic light source preparation part includes a first laser generating module, a first polarization beam splitter, a spatial light modulator, a first reflector, and a second reflector; the first polarization beam splitter and the spatial light modulator are sequentially arranged on the transmission path of the output light beam of the first laser generating module; the first reflector and the second reflector are sequentially arranged at 45 degrees along the transmission light path modulated by the spatial light modulator;

[0007] The quantum noise high-order coherence measurement part includes a second laser generating module, a second polarization beam splitter, a second half-wave plate and a balanced homodyne detection and acquisition module; the second polarization beam splitter is arranged on the transmission path of the output light beam of the second laser generating module, and a first half-wave plate is also arranged between the second reflector; the second half-wave plate and the balanced homodyne detection and acquisition module are arranged in sequence along the transmission light path processed by the second polarization beam splitter.

[0008] Optionally, the first laser generating module specifically includes: a current source, a temperature control source, a first laser, a polarization controller, an optical circulator, a variable optical attenuator, a 20:80 beam splitter, a first optical fiber coupler and a third half-wave plate; the current source and the temperature control source are both connected to the first laser; the first laser is connected to the polarization controller, the optical circulator is arranged on the output optical path of the polarization controller, and the optical circulator is also respectively connected to the variable optical attenuator and the 20:80 beam splitter; the 20:80 beam splitter is also connected to the first optical fiber coupler; the third half-wave plate is arranged on the output optical path of the first optical fiber coupler; wherein the first laser adopts a 1550nm semiconductor laser; and the first optical fiber coupler adopts a TC12FC-850 triplet lens group of 832-867nm.

[0009] Optionally, the second laser generating module specifically includes: a second laser, a second optical fiber coupler and a fourth half-wave plate; the second optical fiber coupler and the fourth half-wave plate are sequentially arranged on the transmission path of the output light beam of the second laser; wherein the second laser adopts a 1550nm TEM-F-1550DFB laser.

[0010] Optionally, the balanced homodyne detection and acquisition module specifically includes: a third polarization beam splitter, a third optical fiber coupler, a fourth optical fiber coupler, a balanced zero-beat detector and a data acquisition device; the transmitted light beam of the third polarization beam splitter is incident on the balanced zero-beat detector via the fourth optical fiber coupler, and the reflected light beam is incident on the balanced zero-beat detector via the third optical fiber coupler; the balanced zero-beat detector is also connected to the data acquisition device.

[0011] Optionally, a plurality of one-dimensional or two-dimensional arrays composed of independent units are arranged inside the spatial light modulator.

[0012] Optionally, the first polarization beam splitter, the second polarization beam splitter and the third polarization beam splitter all use 620-1600nm 50:50FBT-PBS054 type polarization beam splitter; the balanced zero-beat detector uses a 1.6GHz PDB480C-AC type balanced detector; the data acquisition device consists of a Lecroy-LabMaster10-36Zi oscilloscope with a bandwidth of 36Ghz and an AgilentN9020A spectrum analyzer with a bandwidth of 26.5GHz.

[0013] Optionally, the first reflector and the second reflector are both 1450-1650nm OQTMF type plane reflectors; and the spatial light modulator is UPOlabs-HDSLM80R-Plus1550nm pure phase programmable modulator.

[0014] The present invention also provides a method for measuring high-order coherence of hyperchaotic optical quantum noise, which is applied to the above-mentioned device, comprising:

[0015] The first laser generating module outputs a light beam, modulates the output light beam into a laser beam in a horizontal polarization state through a first polarization beam splitter, and performs phase modulation on the laser beam in the current horizontal polarization state through a spatial light modulator to obtain a hyperchaotic light source;

[0016] The second laser generating module is used to output local oscillator light with a relatively high amplitude coherent state, and the local oscillator light is determined to be linearly polarized light by a second polarization beam splitter. The hyperchaotic light source and the linearly polarized light incident into the second polarization beam splitter via a first reflector, a second reflector and a first half-wave plate are incident into a balanced homodyne detection acquisition module via a second half-wave plate for interference, and the optical signal after interference is converted into an electrical signal for collection, so as to obtain two amplified differential current signals.

[0017] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0018] The invention discloses a device and method for measuring high-order coherence of hyperchaotic optical quantum noise. The device comprises a hyperchaotic light source preparation part and a quantum noise high-order coherence measurement part. The hyperchaotic light source preparation part is composed of: a first polarization beam splitter and a spatial light modulator are sequentially arranged on the transmission path of the output light beam of a first laser generating module; a first reflector and a second reflector are sequentially arranged at 45 degrees along the transmission light path modulated by the spatial light modulator; the quantum noise high-order coherence measurement part is composed of: a second polarization beam splitter is arranged on the transmission path of the output light beam of a second laser generating module, and a first half-wave plate is further arranged between the second polarization beam splitter and the second reflector; a second half-wave plate and a balanced homodyne detection acquisition module are sequentially arranged along the transmission light path processed by the second polarization beam splitter. The present invention solves the problems of unclear bunching characteristics, complex structure, low signal-to-noise ratio of weak quantum signals and poor amplification effect in the preparation of existing hyperchaotic light sources, and achieves precise adjustment of the hyperchaotic light wavefront phase, thereby greatly improving the high-order coherence of the amplified quantum noise, and can effectively enhance the intensity of weak signals so that they can be detected and analyzed more accurately, while enhancing multi-photon nonlinear interactions and improving the accuracy and sensitivity of quantum measurements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 The overall structure diagram of the device for measuring high-order coherence of hyperchaotic optical quantum noise of the present invention is shown;

[0021] Figure 2 is the high-order coherence g of the modulated light field in this embodiment. 2 (0) Result diagram with the change of the number of random phase types N;

[0022] Figure 3 Schematic diagram of the characteristics of the Lyapunov exponent of the hyperchaotic system of this embodiment changing with time;

[0023] Figure 4 This is a spectrum diagram of the amplified quantum noise of a super-bunched light source detected by a balanced zero-beat detector with a high bandwidth of 1.6G in the embodiment of the present invention;

[0024] Figure 5 This is a timing diagram of quantum noise amplified by a super-bunched light source acquired by a digital oscilloscope in this embodiment.

[0025] Reference numerals:

[0026] 1. Current source and temperature control source; 2. First laser; 3. Polarization controller; 4. Optical circulator; 5. Variable optical attenuator; 6. 20:80 beam splitter; 7. First fiber coupler; 8. Third half-wave plate; 9. First polarization beam splitter; 10. Spatial light modulator; 11. First reflector; 12. Second reflector; 13. Second laser; 14. Second fiber coupler; 15. Fourth half-wave plate; 16. Second polarization beam splitter; 17. First half-wave plate; 18. Second half-wave plate; 19. Third polarization beam splitter; 20. Third fiber coupler; 21. Fourth fiber coupler; 22. Balanced zero-beat detector; 23. Data acquisition device. DETAILED DESCRIPTION

[0027] The following will be combined with the 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a device and method for measuring high-order coherence of hyperchaotic light quantum noise, which can solve the problems of unclear bunching characteristics, complex structure, low signal-to-noise ratio of weak quantum signals and poor amplification effect when preparing existing hyperchaotic light sources.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown (the solid line in the figure is the optical fiber connection, and the dotted line is the spatial light connection), the present invention provides a hyperchaotic optical quantum noise high-order coherence measurement device, including: a hyperchaotic light source preparation part and a quantum noise high-order coherence measurement part.

[0031] The hyperchaotic light source preparation part includes a first laser generating module, a first polarization beam splitter 9, a spatial light modulator 10, a first reflector 11, and a second reflector 12; the first polarization beam splitter 9 and the spatial light modulator 10 are sequentially arranged on the transmission path of the output light beam of the first laser generating module; the first reflector 11 and the second reflector 12 are sequentially arranged at 45 degrees along the transmission light path modulated by the spatial light modulator 10.

[0032] The quantum noise high-order coherence measurement part includes a second laser generating module, a second polarization beam splitter 16, a second half-wave plate 18 and a balanced homodyne detection acquisition module; the second polarization beam splitter 16 is arranged on the transmission path of the output light beam of the second laser generating module, and a first half-wave plate 17 is also arranged between the second reflector 12; the second half-wave plate 18 and the balanced homodyne detection acquisition module are arranged in sequence along the transmission light path processed by the second polarization beam splitter 16.

[0033] As a specific implementation, the part of generating chaotic light source based on optical feedback includes: the first laser 2 is stably controlled by a high-precision current source and temperature control source 1 to generate a 1550nm laser, the laser beam is adjusted by a polarization controller 3 to output the laser polarization through an optical circulator 4 and a 20:80 beam splitter 6, 80% of the light output is fed back to the first laser 2 through a variable optical attenuator 5 to form an external cavity feedback loop, and 20% of the chaotic light is connected to the modulation optical path and is subjected to hyper-chaotic modulation through a spatial light modulator 10 (SLM). 20% of the chaotic light is coupled out through a first optical fiber coupler 7, and the spatial light is modulated into a light beam with a horizontal polarization state through a third half-wave plate 8 and a first polarization beam splitter 9, and is received through a spatial light modulator 10. The spatial light modulator 10 is directly coded and controlled by a computer PC to load the same random phase delay inside the unit, and the wavefronts at different positions of the chaotic light beam are loaded with random phases, making the chaotic system more complex, and multiple Lyapu indexes are greater than zero. The hyperchaotic light modulated by the spatial light modulator 10 is reflected to the balanced zero-beat detection system via the first reflecting mirror 11 and the second reflecting mirror 12 .

[0034] As a specific implementation, the quantum noise high-order coherence measurement part includes the hyperchaos reflected by the second reflector 12 as the signal light, the second laser 13 is used to generate local oscillator light with a higher amplitude coherent state, the fourth half-wave plate 15 and the second polarization beam splitter 16 are combined to confirm that the local oscillator light is linearly polarized light, and the third polarization beam splitter 19 is used to combine the local oscillator light and the super-bunched light source prepared in step one to interfere, and the transmitted light beam and the reflected light beam of the third polarization beam splitter 19 are incident on the balanced zero-beat detector 22 by the third fiber coupler 20 and the fourth fiber coupler 21; the balanced zero-beat detector 22 converts the optical signal into an electrical signal and hands it over to the data acquisition device 23 to collect the two amplified differential current signals and calculate the quantum noise high-order coherence.

[0035] Among them, the second laser 13 adopts a DFB laser. The laser generated by the DFB laser passes through the polarization controller 3, the optical circulator, the variable optical attenuator 5, and the 20:80 beam splitter 6 in sequence, so that the optical path forms an optical fiber feedback loop. The light output by the beam splitter is received by the spatial light modulator 10 directly controlled by the computer after collimation and polarization adjustment. There are many one-dimensional or two-dimensional arrays composed of independent units inside the spatial light modulator 10. All independent units are directly controlled to complete the control of different arrays, and phase diagrams of different phases are loaded to all independent units, so that the light beam transmitted by the first polarization beam splitter 9 can directly realize the corresponding deflection, and then load more complex random phase modulation to the chaotic light to become hyperchaotic light.

[0036] In this embodiment, the temperature control source (ILX Lightwave LDT-5416) and the current source (ILX Lightwave LDX-3412) enable the DFB laser to emit a single-mode laser with a central wavelength of 1550nm; the 20:80 beam splitter 6 adopts a 20:80FBT-PBS054 type polarization beam splitter with a wavelength of 620-1600nm; the second laser 13 adopts a TEM-F-1550DFB laser with a central wavelength of 1550nm; the first fiber coupler 7, the second fiber coupler 14, the third fiber coupler 20 and the fourth fiber coupler 21 all adopt a TC12FC-850 type triplet lens group with a wavelength of 832-867nm; the first reflector 11 and the second reflector 12 adopt a 1450-1650nm OQTMF type plane reflector mirror; the spatial optical phase modulator adopts UPOlabs-HDSLM80R-Plus1550nm pure phase programmable modulator; the first polarization beam splitter 9, the second polarization beam splitter 16 and the third polarization beam splitter 19 adopt 620-1600nm 50:50FBT-PBS054 type polarization beam splitter; the balanced zero-beat detector 22 adopts 1.6GHz PDB480C-AC type balanced detector; the data acquisition device 23 is recorded by a Lecroy-LabMaster10-36Zi oscilloscope with a bandwidth of 36Ghz and an AgilentN9020A spectrum analyzer with a bandwidth of 26.5GHz.

[0037] Based on the above structure, a specific method for preparing hyperchaotic light and measuring the high-order coherence of quantum noise is provided, which specifically includes:

[0038] (I) Construct the optical path for preparing the hyperchaotic system: The continuous laser emitted by the semiconductor laser first passes through the polarization controller 3, and the output passes through the optical circulator and the 20:80 beam splitter 6, where 80% of the light is precisely adjusted by the attenuator and fed back to the semiconductor laser to form a fiber feedback loop. The fiber coupler converts the 20% chaotic light beam output by the beam splitter in the optical feedback chaotic system into spatial light; the spatial light then passes through a half-wave plate to adjust its polarization direction; the light beam is adjusted to be horizontally polarized and then passes through the first polarization beam splitter 9 to divide the laser into two beams; the transmitted light is incident on the center of the modulation screen of the spatial light phase modulator, and many independent units inside the spatial light modulator 10 controlled by the PC can be controlled by MATLAB to load different random phases on the display screen. The light beam on the optical fiber is modulated by changing its own optical properties according to the modulation signal, and the modulated light beam reflected by the spatial light modulator 10 enters the balanced zero-beat detection system of the second-order coherence of the super-bunched light source to amplify the quantum noise through the first reflector 11 and the second reflector 12.

[0039] (II) Build a balanced zero-beat detection device for high-order coherence of quantum noise: First, the second laser 13 is connected to the second fiber coupler 14 to convert the fiber laser into parallel light in the spatial light field; the spatial light passes through a half-wave plate to adjust its polarization direction; then the light beam passes through the second polarization beam splitter 16, which transmits a beam of light as P light, a beam of linearly polarized light with a polarization direction in the plane of the optical path. A half-wave plate and the second polarization beam splitter 16 cooperate to control the light intensity transmitted by the second laser 13; the hyperchaotic light beam modulated by the spatial light modulator 10 enters through two reflectors The second polarization beam splitter 16, the light beam transmitted by the second polarization beam splitter 16 changes its polarization direction through a half-wave plate, and then enters the third polarization beam splitter 19; in the two directions after the third polarization beam splitter 19 splits, each direction has two lights with the same polarization direction, which are respectively coupled into the third fiber coupler 20 and the fourth fiber coupler 21 after interference mode selection, and the interfering spatial light is converted into fiber laser; then it is incident on the integrated balanced homodyne detector; finally, the two-way differential current signal is collected by an oscilloscope to calculate the second-order coherence of the related amplified quantum noise. The ratio of the differential current signal of the balanced homodyne detector corresponds to the intensity of the quantum spontaneous radiation noise amplified by the hyperchaotic, and finally the second-order coherence of the quantum noise under the system measurement is calculated.

[0040] In the first part, the method of computer controlling the spatial light modulator 10 to modulate the hyperchaotic system is:

[0041] There are many one-dimensional and two-dimensional arrays distributed inside the spatial light modulator 10, each array is composed of many independent units. A MATLAB driver library that can independently control each unit is built on the PC side, named SLM library; the corresponding program is loaded through the SLM library to initialize the connection with the spatial light modulator 10; the 1920*1200 phase diagram is divided into N different random phases according to needs, and the display image is converted into a 10-bit grayscale floating-point matrix that can be received by the spatial light modulator 10, normalized and stored in the spatial light modulator 10; then all independent units inside the spatial light modulator 10 will change their own optical properties according to the modulation signal, thereby modulating the light beam incident on its display screen.

[0042] Based on the above technical solution, the following is provided: Figure 2-Figure 5 The embodiment shown.

[0043] First, a spatial light modulator 10 is built to prepare the optical path of the hyperchaotic system: a continuous laser emitted by a DFB laser with a central wavelength of 1550nm from a temperature-controlled source and a current source continuously passes through a polarization controller 3, an output optical circulator and a 20:80 beam splitter 6, wherein 80% of the light is precisely adjusted by a variable optical attenuator 5 and fed back to the semiconductor laser, and 20% of the chaotic light is converted into spatial light after passing through a first optical fiber coupler 7; then the spatial light passes through a third half-wave plate 8 to adjust its polarization direction; the light beam is adjusted to be horizontally polarized and then passes through a first polarization beam splitter 9 to split the laser into two beams; wherein the transmitted light is incident on the center of the modulation screen of the spatial light phase modulator; a computer directly controls the spatial light modulator 10 to load a random phase map, with a resolution of 1920*1200 and an effective area of ​​15.42mm*9.66mm, and the number of random phase types is set to N, where N is a positive integer and increases from 1; at this time, 10MAPD is used to detect the high-order coherence g of the modulated light field alone 2 (0) is as N changes more and more. Figure 2 The light beam modulated by the spatial light modulator 10 enters the balanced zero-beat detection system that amplifies the high-order coherence of quantum noise through the first reflector 11 and the second reflector 12.

[0044] Then the beam peak of the super-bunched light source is changed, and then the beam of the super-bunched light source modulated by the spatial light modulator 10 enters the second polarization beam splitter 16 through two reflectors. The beam transmitted by the second polarization beam splitter 16 changes the polarization direction through the second half-wave plate 18, and then enters the third polarization beam splitter 19; after interference mode selection, it is coupled into the fourth fiber coupler 21 and the balanced zero-beat detector 22 respectively, and the interfering spatial light is converted into fiber laser. That is, the laser incident on the 1.6GHz PDB480C-AC balanced detector is collected by the Lecroy-LabMaster10-36Zi oscilloscope with a bandwidth of 6Ghz to calculate the second-order coherence of the related amplified quantum noise.

[0045] Figure 3 It is an important feature of the hyperchaotic system, which includes the existence of four Lyapunov indices among all the Lyapunov indices of the system, indicating that the hyperchaotic system modulated by the spatial light modulator 10 has highly complex and unpredictable dynamic behavior.

[0046] Figure 4 This is a spectrum diagram of the quantum noise of the amplified system after the hyperchaotic light modulated by the random phase pattern when N=8 is loaded inside the spatial light modulator 10 obtained in an embodiment of the present invention and enters the balanced zero-beat detection system. The spectrum of the amplified quantum noise increases by 20dB within the 1.6Ghz bandwidth.

[0047] Figure 5It is a timing diagram of quantum noise measured by a balanced zero-beat detector 22 with a high bandwidth of 1.6G after hyperchaos modulated by a random phase pattern when N=8 is loaded inside the spatial light modulator 10 obtained in an embodiment of the present invention enters a balanced zero-beat detection system.

[0048] The present invention adopts a digital programming method to encode the laser wavefront phase. This method is simple and easy to implement, can greatly improve the preparation process of the hyperchaotic system, can increase the peak value of the high-order coherence of quantum noise, can effectively enhance the intensity of weak signals, so that it can be detected and analyzed more accurately, and at the same time has important value in improving the contrast of second-order correlation imaging and enhancing multi-photon nonlinear interactions.

[0049] Therefore, this embodiment has the following beneficial effects:

[0050] (1) The present invention uses a digital programming method to encode the laser wavefront phase. This method is simple, easy to implement and highly efficient. It also avoids the sensitivity of traditional hyperchaotic systems to significant changes in system behavior caused by slight changes in parameters. The hyperchaotic system prepared by this method is simple and stable. The multiple N gradually increases, which can greatly increase the superbunching peak g 2 (0), and the hyperchaotic system has more Lyapunov exponents greater than 0, which can effectively enhance the strength of weak signals, enabling them to be detected and analyzed more accurately. At the same time, it has important value in improving the contrast of second-order correlation imaging and enhancing multi-photon nonlinear interactions.

[0051] (2) A balanced zero-beat measurement scheme for the high-order coherence of hyperchaotically amplified quantum noise is proposed. This can quantitatively analyze how hyperchaos amplifies quantum noise to a macroscopically detectable level, making the measurement of quantum noise no longer limited by the limited bandwidth of the detection system. By calculating the high-order coherence g 2 (0), its coherence and photon statistical properties can be accurately characterized. By efficiently extracting quantum noise and accurately characterizing its statistical properties, the performance and security of quantum precision measurement and quantum cryptography can be enhanced, providing better resources and guarantees for high-speed cryptographic applications.

[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the core idea of ​​the present invention. 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 methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for measuring high-order coherence of hyperchaotic optical quantum noise, characterized in that: include: Hyperchaotic light source preparation part and quantum noise high-order coherence measurement part; The hyperchaotic light source preparation part includes a first laser generating module, a first polarization beam splitter, a spatial light modulator, a first reflector, and a second reflector; the first polarization beam splitter and the spatial light modulator are sequentially arranged on the transmission path of the output light beam of the first laser generating module; the first reflector and the second reflector are sequentially arranged at 45 degrees along the transmission light path modulated by the spatial light modulator; The quantum noise high-order coherence measurement part includes a second laser generating module, a second polarization beam splitter, a second half-wave plate and a balanced homodyne detection and acquisition module; the second polarization beam splitter is arranged on the transmission path of the output light beam of the second laser generating module, and a first half-wave plate is also arranged between the second reflector; the second half-wave plate and the balanced homodyne detection and acquisition module are arranged in sequence along the transmission light path processed by the second polarization beam splitter.

2. The hyperchaotic optical quantum noise high-order coherence measurement device according to claim 1, characterized in that: The first laser generating module specifically includes: a current source, a temperature control source, a first laser, a polarization controller, an optical circulator, a variable optical attenuator, a 20:80 beam splitter, a first optical fiber coupler and a third half-wave plate; the current source and the temperature control source are both connected to the first laser; the first laser is connected to the polarization controller, the optical circulator is arranged on the output optical path of the polarization controller, and the optical circulator is also respectively connected to the variable optical attenuator and the 20:80 beam splitter; the 20:80 beam splitter is also connected to the first optical fiber coupler; the third half-wave plate is arranged on the output optical path of the first optical fiber coupler; wherein the first laser adopts a 1550nm semiconductor laser; and the first optical fiber coupler adopts a TC12FC-850 triplet lens group of 832-867nm.

3. The hyperchaotic optical quantum noise high-order coherence measurement device according to claim 1, characterized in that: The second laser generating module specifically includes: a second laser, a second optical fiber coupler and a fourth half-wave plate; the second optical fiber coupler and the fourth half-wave plate are sequentially arranged on the transmission path of the output light beam of the second laser; wherein the second laser adopts a 1550nm TEM-F-1550DFB laser.

4. The hyperchaotic optical quantum noise high-order coherence measurement device according to claim 1, characterized in that: The balanced homodyne detection and acquisition module specifically includes: a third polarization beam splitter, a third optical fiber coupler, a fourth optical fiber coupler, a balanced zero-beat detector and a data acquisition device; the transmitted light beam of the third polarization beam splitter is incident on the balanced zero-beat detector via the fourth optical fiber coupler, and the reflected light beam is incident on the balanced zero-beat detector via the third optical fiber coupler; the balanced zero-beat detector is also connected to the data acquisition device.

5. The hyperchaotic optical quantum noise high-order coherence measurement device according to claim 1, characterized in that: The spatial light modulator is internally provided with a plurality of one-dimensional or two-dimensional arrays composed of independent units.

6. The device for measuring high-order coherence of hyperchaotic photon noise according to claim 4, characterized in that: The first polarization beam splitter, the second polarization beam splitter and the third polarization beam splitter all use 620-1600nm 50:50FBT-PBS054 type polarization beam splitter; the balanced zero-beat detector uses a 1.6GHz PDB480C-AC type balanced detector; the data acquisition device consists of a Lecroy-LabMaster10-36Zi oscilloscope with a bandwidth of 36Ghz and an AgilentN9020A spectrum analyzer with a bandwidth of 26.5GHz.

7. The hyperchaotic optical quantum noise high-order coherence measurement device according to claim 1, characterized in that: The first reflector and the second reflector are both 1450-1650nm OQTMF type plane reflectors; the spatial light modulator is UPOlabs-HDSLM80R-Plus1550nm pure phase programmable modulator.

8. A method for measuring high-order coherence of hyperchaotic optical quantum noise, applied to the device as described in any one of claims 1 to 7, characterized in that: include: The first laser generating module outputs a light beam, which is modulated into a laser beam in a horizontal polarization state by a first polarization beam splitter, and a spatial light modulator performs phase modulation on the laser beam in the current horizontal polarization state to obtain a hyperchaotic light source; The second laser generating module is used to output local oscillator light with a relatively high amplitude coherent state, and the local oscillator light is determined to be linearly polarized light by a second polarization beam splitter. The hyperchaotic light source and the linearly polarized light incident into the second polarization beam splitter via a first reflector, a second reflector and a first half-wave plate are incident into a balanced homodyne detection acquisition module via a second half-wave plate for interference, and the optical signal after interference is converted into an electrical signal for collection, so as to obtain two amplified differential current signals.

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