Data receiving method and device and storage medium

Abstract

The invention discloses a data receiving method and device and a storage medium, and belongs to the field of communication. The apparatus comprises a microwave source for emitting local oscillation microwaves to an atomic gas chamber, the atomic gas chamber comprising signal microwaves associated with first data. And the detection light source is used for dividing the first detection light into n paths of second detection light and emitting the n paths of second detection light to the atomic gas chamber. And the coupling light source is used for dividing the first coupling light into n paths of second coupling light and emitting the n paths of second coupling light to the atomic gas chamber. The n paths of second detection light and the n paths of second coupling light form n paths of excitation channels in the atomic gas chamber, the n paths of excitation channels are used for transitioning atoms in the atomic gas chamber into a Rydberg state, and the atoms in the Rydberg state are used for modulating the n paths of second detection light under the action of the signal microwaves and the local oscillator microwaves to form n paths of detection light signals associated with the first data. And the data detection module is used for obtaining first data based on the n paths of detection optical signals. According to the invention, the instantaneous bandwidth of the received data can be improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a method, device and storage medium for receiving data. Background Art

[0002] An atomic receiver is a device for receiving data. A receiving end includes the atomic receiver, and the receiving end can receive data sent by a sending end through the atomic receiver.

[0003] The transmitting end can modulate the data to be sent to the receiving end into a signal microwave, and send the signal microwave to the transmitting end. The receiving end receives the signal microwave through the atomic receiver and obtains the data based on the signal microwave.

[0004] However, the instantaneous bandwidth of the current atomic receiver is low, which seriously affects the efficiency of receiving data through the atomic receiver, that is, the efficiency of receiving data by the current atomic receiver is low. Summary of the invention

[0005] The present application provides a method, device and storage medium for receiving data to improve the instantaneous bandwidth of received data. The technical solution is as follows:

[0006] In a first aspect, the present application provides a device for receiving data, the device comprising a microwave source, a detection light source, an atomic gas chamber, a coupling light source and a data detection module.

[0007] The microwave source is used to transmit local oscillation microwaves to the atomic gas chamber, where the atomic gas chamber includes signal microwaves associated with the first data.

[0008] The detection light source is used to generate a first detection light, divide the first detection light into n second detection lights, and emit the n second detection lights to the first side of the atomic gas chamber, the sum of the waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, and n is an integer greater than 1.

[0009] A coupling light source is used to generate a first coupling light, divide the first coupling light into n second coupling lights, and emit the n second coupling lights to the second side of the atomic gas chamber, the sum of the waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light, the first side and the second side are opposite sides of the atomic gas chamber, and the n second detection lights correspond to the n second coupling lights.

[0010] Among them, the n second detection lights and the n second coupling lights form n excitation channels in the atomic gas chamber, each excitation channel includes a second detection light and a second coupling light corresponding to each other, the n excitation channels are used to transition the state of atoms in the atomic gas chamber to a Rydberg state, and the atoms in the Rydberg state are used to modulate the n second detection lights under the action of the signal microwave and the local oscillator microwave to form n detection light signals associated with the first data, and the n detection light signals are emitted to the data detection module.

[0011] The data detection module is used to obtain first data based on the n detection optical signals.

[0012] Since the detection light source generates the first detection light, the first detection light is divided into n second detection lights, and the n second detection lights are emitted to the first side of the atomic gas chamber. The coupling light source generates the first coupling light, the first coupling light is divided into n second coupling lights, and the n second coupling lights are emitted to the second side of the atomic gas chamber. The n second detection lights correspond to the n second coupling lights, and each second detection light and the second coupling light corresponding to each second detection light meet and interact in the atomic gas chamber to form n excitation channels. Since the first detection light is divided into n second detection lights, and the first coupling light is divided into n second coupling lights, the waist spot area of ​​each second detection light and the waist spot area of ​​each second coupling light are reduced, thereby reducing the size of the interaction area on each excitation channel. In this way, the faster the Rydberg state atoms in the atomic gas chamber "escape" from the interaction area, the larger the instantaneous bandwidth of the signal received by the device 100 is, thereby improving the efficiency of receiving data.

[0013] Since the sum of the waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, the sum of the waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light, so that the total area of ​​the interaction region on each excitation channel is the area of ​​the interaction region between the first detection light and the second coupling light, which will not affect the sensitivity of the device 100 in receiving signals.

[0014] In a possible implementation, the beam spacing between two adjacent second detection lights is determined based on the waist radius of the two second detection lights, the movement speed and lifetime of the Rydberg state atoms.

[0015] In another possible implementation, the waist radius of each second detection light is less than or equal to the waist radius of the second coupling light corresponding to each second detection light. In this way, in the atomic gas chamber, each second coupling light can completely envelop the second detection light corresponding to each second coupling light, thereby avoiding the occurrence of a spatial effect.

[0016] In another possible implementation, the data detection module includes a photodetector and a demodulation module.

[0017] A photoelectric detector, used for superimposing the n detection light signals into one detection light signal, and converting the one detection light signal into an electrical signal;

[0018] The demodulation module is used to demodulate the electrical signal to obtain first data.

[0019] Since the n detection light signals are superimposed into one detection light signal, the optical properties of the one detection light signal can be increased, such as increasing the amplitude and / or power of the one detection light signal, and the one detection light signal is converted into an electrical signal, and then the electrical signal is demodulated to obtain the first data, thereby avoiding affecting the demodulation and thus avoiding affecting the sensitivity of the received data.

[0020] In another possible implementation, the detection light source includes a detection light generator and a first beam splitter.

[0021] The detection light generator is used to generate a first detection light and transmit the first detection light to the first spectrometer.

[0022] The first beam splitter is used to split the first detection light into n paths of second detection light, and emit the n paths of second detection light to the first side of the atomic gas chamber.

[0023] In this way, the first detection light can be divided into n paths of second detection light by the first beam splitter, so as to achieve the purpose of reducing the waist spot area of ​​each path of second detection light.

[0024] In another possible implementation, the first beam splitter is used to receive a control signal corresponding to a target waist spot radius and / or a target beam spacing, and based on the control signal, split the first detection light into the n paths of second detection light, wherein the waist spot radius of the n paths of second detection light is equal to the target waist spot radius, and / or the beam spacing between two adjacent paths of the n paths of second detection light is equal to the target beam spacing. In this way, the first detection light can be split into the n paths of second detection light as needed, and the flexibility of splitting into the n paths of second detection light can be improved.

[0025] In another possible implementation, the detection light source further includes a reflector.

[0026] The detection light generator is used for emitting a first detection light to the reflecting mirror.

[0027] The reflector is used to reflect the first detection light to the first beam splitter.

[0028] Since the reflector can reflect the first detection light generated by the detection light generator to the first spectrometer, the detection light generator and the first spectrometer may not be on a straight optical path, so the space of the device can be fully utilized to arrange devices such as the detection light generator and the first spectrometer, thereby improving the flexibility of arranging devices.

[0029] In another possible implementation, the detection light source further includes a reflector.

[0030] The first beam splitter is used to transmit the n paths of second detection light to the reflecting mirror.

[0031] The reflector is used to reflect the n-path second detection light to the first side of the atomic gas chamber.

[0032] Since the reflector can reflect the n paths of second detection lights split by the first beam splitter to the first side of the atomic gas chamber, the detection light generator, the first distributor and the atomic gas chamber may not be on a straight optical path, so the space of the device can be fully utilized to arrange devices such as the detection light generator, the first beam splitter and the atomic gas chamber, thereby improving the flexibility of arranging devices.

[0033] In another possible implementation, the coupling light source includes a coupling light generator and a second beam splitter.

[0034] The coupling light generator is used to generate a first coupling light and transmit the first coupling light to the second beam splitter.

[0035] The second beam splitter is used to split the first coupling light into n paths of second coupling light, and emit the n paths of second coupling light to the second side of the atomic gas chamber.

[0036] In this way, the first coupling light can be split into n paths of second coupling light by the second beam splitter, thereby achieving the purpose of reducing the waist spot area of ​​each path of second coupling light.

[0037] In another possible implementation, the coupled light source further includes a dichroic mirror, which is located between the atomic gas chamber and the data detection module, and the n-path detection light signals are emitted toward the data detection module through the dichroic mirror.

[0038] The second beam splitter is used to transmit the n-path second coupled light to the dichroic mirror.

[0039] The dichroic mirror is used for reflecting the n-way second coupled light to the second side of the atomic gas cell.

[0040] Since the dichroic mirror can reflect the second coupling light but not transmit the second coupling light, but can transmit the detection light signal but not reflect the detection light signal, it is ensured that the n-way second coupling light can be successfully transmitted to the second side of the atomic gas chamber, and the n-way detection light signal can be successfully transmitted to the data detection module.

[0041] In another possible implementation, the device is a Rydberg atomic receiver.

[0042] In another possible implementation, the atoms in the atomic gas chamber are alkali metal atoms.

[0043] In another possible implementation, the alkali metal atom is a cesium atom, a sodium atom, a potassium atom, a francium atom or a rubidium atom.

[0044] In a second aspect, the present application provides a method for receiving data, in which:

[0045] A local oscillator microwave is emitted to the atomic gas chamber, and the atomic gas chamber includes a signal microwave associated with the first data. A first detection light is generated, and the first detection light is divided into n second detection lights, and the n second detection lights are emitted to the first side of the atomic gas chamber, and the sum of the waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, and n is an integer greater than 1. A first coupling light is generated, and the first coupling light is divided into n second coupling lights, and the n second coupling lights are emitted to the second side of the atomic gas chamber, and the sum of the waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light, and the first side and the second side are opposite sides of the atomic gas chamber, wherein the n second detection lights and the n second coupling lights form n excitation channels in the atomic gas chamber, and each excitation channel includes one second detection light and one second coupling light corresponding to each other, and the n excitation channels are used to transition the state of atoms in the atomic gas chamber to a Rydberg state, and the atoms in the Rydberg state are used to modulate the n second detection lights under the action of the signal microwave and the local oscillator microwave to form n detection light signals associated with the first data. The first data is obtained based on the n detection optical signals.

[0046] Since the first detection light is divided into n second detection lights, the n second detection lights are emitted to the first side of the atomic gas chamber. The first coupling light is divided into n second coupling lights, and the n second coupling lights are emitted to the second side of the atomic gas chamber. The n second detection lights correspond to the n second coupling lights, and each second detection light and the second coupling light corresponding to each second detection light meet and interact in the atomic gas chamber to form n excitation channels. Since the first detection light is divided into n second detection lights, and the first coupling light is divided into n second coupling lights, the waist spot area of ​​each second detection light and the waist spot area of ​​each second coupling light are reduced, thereby reducing the size of the interaction area on each excitation channel. In this way, the faster the Rydberg state atoms in the atomic gas chamber "escape" from the interaction area, the larger the instantaneous bandwidth of the device 100 receiving the signal is, thereby improving the efficiency of receiving data.

[0047] Since the sum of the waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, the sum of the waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light, so that the total area of ​​the interaction region on each excitation channel is the area of ​​the interaction region between the first detection light and the second coupling light, which will not affect the sensitivity of the device 100 in receiving signals.

[0048] In a possible implementation, the n-channel detection optical signals are superimposed into one channel detection optical signal. The one channel detection optical signal is converted into an electrical signal. The electrical signal is demodulated to obtain the first data. Since the n-channel detection optical signals are superimposed into one channel detection optical signal, the optical properties of the one channel detection optical signal can be increased, such as increasing the amplitude and / or power of the one channel detection optical signal, and the one channel detection optical signal is converted into an electrical signal, and then the electrical signal is demodulated to obtain the first data, thereby avoiding affecting the demodulation, thereby avoiding affecting the sensitivity of the received data.

[0049] In another possible implementation, the spacing between two adjacent second detection lights among the n second detection lights is determined based on the waist radius of the two second detection lights, and the movement speed and lifetime of Rydberg state atoms.

[0050] In another possible implementation, the waist radius of each second detection light is less than or equal to the waist radius of the second coupling light corresponding to each second detection light. In this way, in the atomic gas chamber, each second coupling light can completely envelop the second detection light corresponding to each second coupling light, thereby avoiding the occurrence of a spatial effect.

[0051] In another possible implementation, the atoms in the atomic gas cell are alkali metal atoms.

[0052] In another possible implementation, the alkali metal atom is a cesium atom, a sodium atom, a potassium atom, a francium atom or a rubidium atom.

[0053] In a third aspect, the present application provides a device for receiving data, comprising at least one processor and a memory, wherein the at least one processor is used to couple with the memory, read and execute instructions in the memory to implement the method in the second aspect or any possible implementation manner of the second aspect.

[0054] In a fourth aspect, the present application provides a computer program product, which includes a computer program stored in a computer-readable storage medium, and the computer program is loaded by a processor to implement the method of the above-mentioned second aspect or any possible implementation method of the second aspect.

[0055] In a fifth aspect, the present application provides a computer-readable storage medium for storing a computer program, wherein the computer program is loaded by a processor to execute the method of the second aspect or any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a schematic diagram of a network architecture provided in an embodiment of the present application;

[0057] Figure 2is a schematic diagram of the structure of a device for receiving data provided in an embodiment of the present application;

[0058] Figure 3 This is a schematic diagram of an atomic state transition provided in an embodiment of the present application;

[0059] Figure 4 This is a spectrum diagram provided in an embodiment of the present application;

[0060] Figure 5 is a schematic diagram of the structure of another device for receiving data provided in an embodiment of the present application;

[0061] Figure 6 is a schematic diagram of the structure of another device for receiving data provided in an embodiment of the present application;

[0062] Figure 7 is a schematic diagram of the structure of another device for receiving data provided in an embodiment of the present application;

[0063] Figure 8 is a flow chart of a method for receiving data provided by an embodiment of the present application;

[0064] Fig. 9 It is a schematic diagram of the structure of another device for receiving data provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] The implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0066] See also Figure 1 An embodiment of the present application provides a network architecture a, which includes a receiving end 10 and a sending end 20, and the receiving end 10 and the sending end 20 communicate with each other.

[0067] When the transmitting end 20 needs to send the first data to the receiving end 10, the transmitting end 20 modulates the first data to obtain a signal microwave associated with the first data, and sends the signal microwave to the receiving end 10. The signal microwave is equivalent to the first data, and the signal microwave expresses the first data in the form of microwaves. Optionally, the signal microwave carries the first data.

[0068] The receiving end 10 includes a device 100 for receiving data. The receiving end 10 receives the signal microwave through the device 100 for receiving data, and obtains the first data based on the signal microwave.

[0069] See also Figure 2 The present application provides a device 100 for receiving data, which is located in the receiving end 10 and is a device 100 for receiving data in the receiving end 10. The device 100 includes a microwave source 101, a detection light source 102, an atomic gas chamber 103, a coupling light source 104 and a data detection module 105.

[0070] The atomic gas chamber 103 includes gaseous atoms. Optionally, the atoms included in the atomic gas chamber 101 may be alkali metal atoms. For example, the alkali metal atoms may be cesium atoms, sodium atoms, potassium atoms, francium atoms, or rubidium atoms.

[0071] A microwave source 101 is used to transmit local oscillator microwaves to an atomic gas chamber 103, wherein the atomic gas chamber 103 includes signal microwaves transmitted by a transmitting end;

[0072] The detection light source 102 is used to generate a first detection light, divide the first detection light into n second detection lights, and emit the n second detection lights to the first side of the atomic gas chamber 103, wherein the sum of waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, and n is an integer greater than 1;

[0073] A coupling light source 104 is used to generate a first coupling light, divide the first coupling light into n second coupling lights, and emit the n second coupling lights to the second side of the atomic gas chamber 103, wherein the sum of waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light, the first side and the second side of the atomic gas chamber 103 are two sides of the atomic gas chamber 103 that are oppositely arranged, and the n second detection lights correspond to the n second coupling lights;

[0074] Among them, the n-way second detection light is parallel light, that is, the n-way second detection light is parallel to each other, and the n-way second coupling light is also parallel light, that is, the n-way second coupling light is parallel to each other, and the transmission direction of the n-way second detection light is opposite to the transmission direction of the n-way second coupling light. For any second detection light and the second coupling light corresponding to the second detection light, the transmission path of the second detection light in the atomic gas chamber 103 and the transmission path of the second coupling light in the atomic gas chamber 103 overlap, and in the atomic gas chamber 103, the second detection light and the second coupling light interact with each other when they meet to form an excitation channel.

[0075] Therefore, the n-way second detection light and the n-way second coupling light form n-way excitation channels in the atomic gas chamber 103, each of which includes a second detection light and a second coupling light corresponding to each other, and the n-way excitation channels are used to transition the state of the atoms in the atomic gas chamber 103 to the Rydberg state. The atoms in the Rydberg state are used to modulate the n-way second detection light under the action of the signal microwave and the local oscillator microwave to obtain n-way detection light signals associated with the first data, and the n-way detection light signals are emitted to the data detection module 105;

[0076] The data detection module 105 is configured to obtain first data based on the n detection optical signals.

[0077] In some embodiments, the microwave source 101 is used to transmit local oscillator microwaves corresponding to the local oscillator signal to the atomic gas chamber 103. The local oscillator signal is a known fixed signal generated locally by the microwave source 101. The local oscillator microwave is equivalent to the local oscillator signal, which is expressed in the form of microwaves.

[0078] Since the first detection light is divided into n-paths of second detection light, and the first coupling light is divided into n-paths of second coupling light, the waist spot size of each path of second detection light and the waist spot size of each path of second coupling light are reduced. For the n-path excitation channels formed by the n-paths of second detection light and the n-paths of second coupling light, the size of the interaction region on each path of excitation channel can be reduced, so that the atoms in the Rydberg state in the atomic gas chamber 103 "escape" from the interaction region faster, that is, the atoms in the Rydberg state are refreshed faster, so that the instantaneous bandwidth of the device 100 receiving the signal is larger, thereby improving the efficiency of receiving data.

[0079] Since the sum of the waist areas of the n-path second detection lights is equal to the waist area of ​​the first detection light, the sum of the waist areas of the n-path second coupling lights is equal to the waist area of ​​the first coupling light, the data detection module 105 obtains the first data based on the n-path detection light signal, which does not affect the sensitivity of the device 100 in receiving data.

[0080] For any excitation channel, the interaction region on the excitation channel is the region where the second detection light and the second coupling light included in the excitation channel interact with each other. Figure 3 , the initial state of the atoms in the atomic gas cell is the ground state. For the atoms in the atomic gas cell located on the excitation channel, when the second detection light passes through the atomic gas cell 103, under the action of the second detection light, the atoms transition from the ground state to the excited state. When the second coupling light passes through the atomic gas cell 103, under the action of the second coupling light, the atoms transition from the excited state to the Reed state.

[0081] The Rydberg state atoms on the excitation channel act as mixers, and the signal microwaves and the local oscillator microwaves will mix on the Rydberg state atoms, and the two will be coherently superimposed to form a difference frequency signal. The efficiency of the mixing depends on the size of the local oscillator microwave. The difference frequency signal can modulate the second detection light to form a detection light signal carrying the first data, that is, the detection light signal is a signal associated with the first data. For the remaining n-1 excitation channels, the detection light signal is obtained in the same manner as above, so that a total of n detection light signals are obtained, and the n detection light signals are all associated with the first data.

[0082] The Rydberg state atoms in the excitation channel will absorb the second detection light to form Figure 4(a) shows the electromagnetically induced transparency (EIT) spectrum. The Rydberg state atoms are split into two atoms under the influence of the difference frequency signal obtained by the coherent superposition of the signal microwave and the local oscillator microwave. Figure 4 The EIT spectrum shown in (a) is formed as Figure 4 (b) shows a spectrum of a detection light signal, where the detection light signal carries the first data.

[0083] The detection light signal is: P out (t)=|P(δ s )|cos(2πδ s t+φ s ), where P out (t) is the detection light signal, which is a sinusoidal signal, δ s is the frequency difference between the local oscillator microwave and the signal microwave, which is the frequency of the difference frequency signal, φ s is the phase difference between the local oscillator microwave and the signal microwave, and the phase difference is the phase of the difference frequency signal.

[0084] In some embodiments, for two adjacent second detection lights in the n second detection light signals, the beam spacing between the two adjacent second detection lights is determined based on the waist radius of the two second detection lights, the movement speed and lifetime of the atoms in the Rydberg state.

[0085] Optionally, the beam spacing between the two adjacent second detection lights satisfies the condition shown in the following first formula: This can avoid power and collision broadening caused by atomic saturation, while enabling atoms to obtain greater excitation efficiency.

[0086] First formula:

[0087] In the first formula, D nm is the beam spacing between the two second detection light signals, v is the movement rate of the atoms in the Rydberg state (a known value), τ is the lifetime of the atoms in the Rydberg state (a known value), ω n and ω m is the waist spot radius of the two second detection light signals. The movement rate and lifetime of the atoms in the Rydberg state are both known values, and * is a multiplication operation.

[0088] In some embodiments, the waist radius of each second detection light is less than or equal to the waist radius of the second coupling light corresponding to each second detection light. In this way, for one second detection light and one second coupling light included in any excitation channel, the one second coupling light can completely envelop the one second detection light, thereby avoiding the occurrence of spatial effects.

[0089] See also Figure 5 , the microwave source 101 is located at one side of the atomic gas chamber 103, and the side is different from both the first side and the second side of the atomic gas chamber 103;

[0090] The microwave source 101 is used to generate a local oscillation signal, generate a local oscillation microwave corresponding to the local oscillation signal, and transmit the local oscillation microwave to the atomic gas chamber 103 .

[0091] See also Figure 5 , the data detection module 105 includes a photodetector 1051 and a demodulation module 1052;

[0092] The photoelectric detector 1051 is used to superimpose the n detection optical signals into one detection optical signal, convert the one detection optical signal into an electrical signal, and send the electrical signal to the demodulation module;

[0093] The demodulation module 1052 is used to demodulate the electrical signal to obtain first data.

[0094] The n detection light signals are superimposed into one detection light signal, so that the amplitude of the one detection light signal can be increased, and thus the sensitivity of the first data obtained by demodulation can be not affected.

[0095] In some embodiments, the photodetector 1051 may be a photodiode detector (PD) or the like.

[0096] In some embodiments, see Figure 5 , the detection light source 102 includes a detection light generator 1021 and a first beam splitter 1022;

[0097] The detection light generator 1021 is used to generate a first detection light and transmit the first detection light to the first beam splitter 1022;

[0098] The first beam splitter 1022 is used to split the first detection light into n paths of second detection light, and emit the n paths of second detection light to the first side of the atomic gas cell 103 .

[0099] In some embodiments, the probe light generator 1021 may be a probe laser or a laser generator, etc. The first optical splitter 1022 may be a beam splitter or a spatial light modulator (SLM), etc.

[0100] In some embodiments, the waist spot radius of the n-channel second detection light is fixed, and the beam spacing between two adjacent channels of the n-channel second detection light is also fixed. The first beam splitter 1022 may be a beam splitter (such as a beam splitter) that does not need to change its own optical properties, that is, the first beam splitter 1022 is not required to change the waist spot radius of the n-channel second detection light and / or the beam spacing between two adjacent channels of the n-channel second detection light.

[0101] In some embodiments, the waist radius of the n-channel second detection light and / or the beam spacing between two adjacent second detection lights in the n-channel second detection light may be set as required. The first beam splitter 1022 may be a beam splitter (such as SLM) that needs to change its own optical properties, that is, the first beam splitter 1022 may be controlled to change the waist radius of the n-channel second detection light and / or the beam spacing between two adjacent second detection lights in the n-channel second detection light as required.

[0102] In this case, the first optical splitter 1022 may change its own optical properties under the action of the control signal, so as to split the first detection light into n second detection lights that meet the requirements. Optionally, the first optical splitter 1022 (such as SLM) may include multiple optical units, which are spatially distributed into a one-dimensional or two-dimensional array, each of which can be independently controlled by a control signal and change its own optical properties according to the control signal, and can modulate the light wave of one spatial light (such as one second detection light) separated by itself. Under the control of a control signal that changes with time, the amplitude, phase, wavelength and / or polarization of the spatial light distribution can be changed, and / or incoherent light can be converted into coherent light, etc.

[0103] The control signal may be a signal sent by the receiving end 10 to the first optical splitter 1022 , and the control signal corresponds to the required first target waist radius and / or first target beam spacing.

[0104] The first spectrometer 1022 is used to receive the control signal, and split the first detection light into n second detection lights based on the control signal, wherein the waist radius of each of the n second detection lights is equal to the waist radius of the first target, and / or the beam spacing between two adjacent second detection lights in the n second detection lights is equal to the first target beam spacing.

[0105] In some embodiments, the first target waist radius and / or the first target beam spacing are requirement conditions input by a user to the receiving end 10. Alternatively, the first target waist radius and / or the first target beam spacing are determined by the receiving end 10 based on the bandwidth of the received first signal.

[0106] The two-channel results of the multi-beam reception and measurement scheme based on Rydberg atoms were verified to ensure that the atomic excitation probability (Rabi frequency) of a single laser is consistent with the atomic excitation probability of two lasers, and at the same time make the interaction area of ​​a single channel consistent with the interaction area of ​​the two channels added together. The system performance of the single channel is compared with that after the two channels are added together. The expected result is that the electric field sensitivity does not decrease, and the bandwidth of the two small action areas is larger than that of a single channel. The result is in line with expectations, overcoming the narrow instantaneous bandwidth limitation of hundreds of kHz and realizing dynamic bandwidth changes.

[0107] For example, the receiving end 10 can obtain the first target waist spot radius through the following second formula based on the bandwidth of the received first signal.

[0108] Second formula:

[0109] In the second formula, A is a constant, for example, A can be equal to 0.92, etc. B is the bandwidth for receiving the first signal, v is the moving speed of the Rydberg atom, and ω is the waist radius of the first target.

[0110] Optionally, the receiving end 10 may obtain the first target beam spacing based on the first target waist spot radius by using the above first formula.

[0111] In some embodiments, see Figure 6 or Figure 7 , the detection light source 102 further includes a reflector 1023;

[0112] See also Figure 6 , a detection light generator 1021, used to emit a first detection light to a reflector 1023;

[0113] The reflector 1023 is used to reflect the first detection light to the first beam splitter 1022. Or,

[0114] See also Figure 7 , the first beam splitter 1022 is used to transmit the n-path second detection light to the reflector 1023.

[0115] The reflector 1023 is used to reflect the n-path second detection light to the first side of the atomic gas chamber 103 .

[0116] See also Figure 6 or Figure 7 , the coupling light source 104 includes a coupling light generator 1041 and a second beam splitter 1042;

[0117] The coupling light generator 1041 is used to generate a first coupling light and transmit the first coupling light to the second beam splitter 1042;

[0118] The second beam splitter 1042 is used to split the first coupling light into n paths of second coupling light, and emit the n paths of second coupling light to the second side of the atomic gas cell 103 .

[0119] In some embodiments, the coupling light generator 1041 may be a coupling laser, etc. The second optical splitter 1042 may be a beam splitter or a spatial light modulator (SLM), etc.

[0120] In some embodiments, the waist radius of the n-way second coupling light is fixed, and the beam spacing between two adjacent second coupling lights in the n-way second coupling light is also fixed. The second beam splitter 1042 may be a beam splitter (such as a beam splitter) that does not need to change its own optical properties, that is, the second beam splitter 1042 is not required to change the waist radius of the n-way second coupling light and / or the beam spacing between two adjacent second coupling lights in the n-way second coupling light.

[0121] In some embodiments, the waist radius of the n-way second coupling light and / or the beam spacing between two adjacent second coupling lights in the n-way second coupling light may be set as required. The second beam splitter 1042 may be a beam splitter (such as SLM) that needs to change its own optical properties, that is, the second beam splitter 1042 may be controlled to change the waist radius of the n-way second coupling light and / or the beam spacing between two adjacent second coupling lights in the n-way second coupling light as required.

[0122] In this case, the second optical splitter 1042 may change its own optical properties under the action of the control signal, thereby dividing the first coupled light into n second coupled lights that meet the requirements. Optionally, the second optical splitter 1042 (such as SLM) may include multiple optical units, which are spatially distributed into a one-dimensional or two-dimensional array, each optical unit can be independently controlled by a control signal, and change its own optical properties according to the control signal, and can modulate the light wave of one spatial light (such as one second coupled light) separated by itself. Under the control of a control signal that changes with time, the amplitude, phase, wavelength and / or polarization of the spatial light distribution can be changed, and / or incoherent light can be converted into coherent light, etc.

[0123] The control signal may be a signal sent by the receiving end 10 to the second beam splitter 1042 , and the control signal corresponds to the required second target waist radius and / or second target beam spacing.

[0124] The second spectrometer 1042 is used to receive the control signal and split the first coupling light into n second coupling lights based on the control signal, wherein the waist radius of the n second coupling lights is equal to the second target waist radius, and / or the beam spacing between two adjacent second coupling lights in the n second coupling lights is equal to the second target beam spacing.

[0125] In some embodiments, the second target waist spot radius and / or the second target beam spacing are the requirements input by the user to the receiving end 10, or the second target waist spot radius is obtained based on the first target waist spot radius, and the second target beam spacing is obtained based on the first target beam spacing. Wherein, the second target waist spot radius is greater than or equal to the first target waist spot radius, and the second target beam spacing is less than or equal to the first target beam spacing, so as to ensure that the second coupled light can envelop the second detection light corresponding to the second coupled light.

[0126] In some embodiments, see Figure 6 or Figure 7 The coupling light source 104 further includes a dichroic mirror 1043, which is located between the atomic gas chamber 103 and the data detection module 105, and the n-way detection light signal is emitted to the data detection module 105 through the dichroic mirror 1043;

[0127] A second beam splitter 1042 is used to transmit the n-channel second coupled light to the dichroic mirror 1043;

[0128] The dichroic mirror 1043 is used to reflect the n-path second coupled light to the second side of the atomic gas cell 103 .

[0129] The dichroic mirror 1043 can reflect the second coupled light but does not transmit the second coupled light, and can transmit the detection light signal but does not reflect the detection light signal.

[0130] See also Figure 5 , Figure 6 or Figure 7 The device 100 includes a first light path and a second light path that intersect, and the first light path and the second light path intersect at a dichroic mirror 1043 .

[0131] Among them, see Figure 5 , the first optical path is sequentially distributed with a reflector 1023, a first beam splitter 1022, an atomic gas chamber 103, a dichroic mirror 1043 and a photodetector 1051; the second optical path is sequentially distributed with a coupling light generator 1041, a second beam splitter 1042 and a dichroic mirror 1043. Or,

[0132] See also Figure 6, the first optical path is sequentially distributed with a detection light generator 1021, a first beam splitter 1022, an atomic gas chamber 103, a dichroic mirror 1043 and a photodetector 1051; the second optical path is sequentially distributed with a coupling light generator 1041, a second beam splitter 1042 and a dichroic mirror 1043. Or,

[0133] See also Figure 7 The first optical path is sequentially distributed with a reflector 1023, an atomic gas chamber 103, a dichroic mirror 1043 and a photodetector 1051; the second optical path is sequentially distributed with a coupling light generator 1041, a second beam splitter 1042 and a dichroic mirror 1043.

[0134] Optionally, the device 100 may be an atomic receiver, etc. For example, the device 100 may be a Rydberg atomic receiver.

[0135] Next, the instantaneous bandwidth of the device 100 can also be measured, and the measurement process is as follows:

[0136] The frequency of the signal microwave emitted by the transmitting end is controlled to change continuously, that is, the transmitting end can gradually increase the frequency of the emitted signal microwave, or can gradually reduce the frequency of the emitted signal microwave. The amplitude of the one-way detection light signal obtained by superimposing the photodetector 1051 will first change with the frequency change of the signal microwave. When the amplitude of the superimposed one-way detection light signal reaches a certain amplitude, for the sake of convenience, the amplitude is called the first amplitude. Even if the frequency of the signal microwave is still changing, the amplitude of the superimposed one-way detection light signal remains unchanged for a period of time. Continue to change the frequency of the signal microwave emitted by the signal transmitting end, and the amplitude of the superimposed one-way detection light signal may gradually decrease. When the amplitude of the superimposed one-way detection light signal becomes the second amplitude, the frequency of the signal microwave emitted by the transmitting end at this time is the instantaneous bandwidth of the device 100, and the second amplitude is equal to half of the first amplitude.

[0137] A measuring device can be used to measure the amplitude of the one-way detection light signal obtained by superimposing the photodetector 1051, and the first amplitude can be recorded when the first amplitude is measured. When the amplitude of the one-way detection light signal superimposed gradually decreases, the measuring device can also measure the amplitude of the one-way detection light signal superimposed in real time. When the measuring device measures that the amplitude of the one-way detection light signal superimposed is equal to the second amplitude, the frequency of the signal microwave emitted by the transmitting end at this time is obtained to obtain the instantaneous bandwidth of the device 100.

[0138] In an embodiment of the present application, a detection light source generates a first detection light, divides the first detection light into n second detection lights, and emits the n second detection lights to the first side of the atomic gas chamber, and the sum of the waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light. A coupling light source generates a first coupling light, divides the first coupling light into n second coupling lights, and emits the n second coupling lights to the second side of the atomic gas chamber, and the sum of the waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light. The n second detection lights correspond to the n second coupling lights, and each second detection light and the second coupling light corresponding to each second detection light meet and interact in the atomic gas chamber to form n excitation channels. Since the first detection light is divided into n second detection lights and the first coupling light is divided into n second coupling lights, the size of the interaction area on each excitation channel is reduced, so that the atoms in the Rydberg state in the atomic gas chamber "escape" from the interaction area faster, so that the instantaneous bandwidth of the signal received by the device 100 is larger, thereby improving the efficiency of receiving data.

[0139] See also Figure 8 , the present application embodiment provides a method 800 for receiving data, the method 800 is applied to Figure 2 , Figure 5 , Figure 6 or Figure 7 The device 100 for receiving data shown includes:

[0140] Step 801: transmitting local oscillator microwaves to an atomic gas chamber, wherein the atomic gas chamber includes signal microwaves associated with first data transmitted by a transmitting end.

[0141] In step 801, a local signal is generated. The local oscillator signal is a locally generated signal and a known fixed signal. A local oscillator microwave is emitted based on the local oscillator signal. The local oscillator microwave is equivalent to the local oscillator signal and is expressed in the form of microwaves.

[0142] Step 802: Generate a first detection light, divide the first detection light into n second detection lights, and emit the n second detection lights to the first side of the atomic gas chamber, the sum of the waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, and n is an integer greater than 1.

[0143] In some embodiments, a first target waist spot radius and / or a first target light beam spacing are obtained, and based on the first target waist spot radius and / or the first target light beam spacing, the first detection light is divided into n second detection lights, the waist spot radius of each of the n second detection lights is equal to the first target waist spot radius, and / or the light beam spacing between two adjacent second detection lights in the n second detection lights is equal to the first target light beam spacing.

[0144] In some embodiments, the first target waist spot radius and / or the first target beam spacing are required conditions input by a user. Alternatively, the first target waist spot radius and / or the first target beam spacing are determined based on the bandwidth of the received first signal.

[0145] Step 803: Generate a first coupling light, divide the first coupling light into n second coupling lights, and emit the n second coupling lights to the second side of the atomic gas chamber, wherein the sum of waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light, and the first side and the second side are opposite sides of the atomic gas chamber.

[0146] Among them, the n second detection lights and the n second coupling lights form n excitation channels in the atomic gas chamber, each excitation channel includes a second detection light and a second coupling light corresponding to each other, the n excitation channels are used to transition the state of atoms in the atomic gas chamber to a Rydberg state, and the atoms in the Rydberg state are used to modulate the n second detection lights under the action of the signal microwave and the local oscillator microwave to form n detection light signals associated with the first data.

[0147] Step 804: Obtain first data based on the n-path detection optical signals.

[0148] In step 804, the n detection optical signals are superimposed into one detection optical signal; the one detection optical signal is converted into an electrical signal; and the electrical signal is demodulated to obtain first data.

[0149] In some embodiments, the spacing between two adjacent second detection lights among the n second detection lights is determined based on the waist radius of the two second detection lights, the movement speed and lifetime of atoms in the Rydberg state.

[0150] In some embodiments, the waist radius of each second detection light is less than or equal to the waist radius of the second coupling light corresponding to each second detection light.

[0151] In some embodiments, the atoms in the atomic gas cell are alkali metal atoms.

[0152] In an embodiment of the present application, a first detection light is generated, the first detection light is divided into n second detection lights, the n second detection lights are emitted to the first side of the atomic gas chamber, and the sum of the waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light. A first coupling light is generated, the first coupling light is divided into n second coupling lights, the n second coupling lights are emitted to the second side of the atomic gas chamber, and the sum of the waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light. The n second detection lights correspond to the n second coupling lights, and each second detection light and the second coupling light corresponding to each second detection light meet and interact in the atomic gas chamber to form n excitation channels. Since the first detection light is divided into n second detection lights and the first coupling light is divided into n second coupling lights, the size of the interaction area on each excitation channel is reduced, so that the atoms in the Rydberg state in the atomic gas chamber "escape" from the interaction area faster, thereby making the instantaneous bandwidth of the received signal larger, thereby improving the efficiency of receiving data.

[0153] See also Fig. 9 , the present application embodiment provides a schematic diagram of a device 900 for receiving data. The device 900 may be a receiving end provided by any of the above embodiments, for example, the device 900 may be Figure 1 The receiving end 10 in the network architecture a shown in FIG. 1 , the device 900 includes Figure 2 , Figure 5 , Figure 6 or Figure 7 The device 100 for receiving data is shown. The device 900 comprises at least one processor 901 , an internal connection 902 , a memory 903 and at least one transceiver 904 .

[0154] The device 900 is a hardware structure device that can be used to implement Figure 2 , Figure 5 , Figure 6 or Figure 7 The functional modules in the device 100 for receiving data are shown.

[0155] The device 900 can also be used to implement the function of the receiving end in any of the above embodiments.

[0156] The processor 901 may be a general-purpose central processing unit (CPU), a network processor (NP), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0157] The internal connection 902 may include a path to transmit information between the components. The internal connection 902 may be a single board or a bus.

[0158] The at least one transceiver 904 is used to communicate with other devices or communication networks.

[0159] The memory 903 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may exist independently and be connected to the processor via a bus. The memory may also be integrated with the processor.

[0160] The memory 903 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 901. The processor 901 is used to execute the application code stored in the memory 903, and cooperate with at least one transceiver 904, so that the device 900 implements the functions of the method of the present patent.

[0161] In a specific implementation, as an embodiment, the processor 901 may include one or more CPUs, such as Fig. 9 CPU0 and CPU1 in.

[0162] In a specific implementation, as an embodiment, the device 900 may include multiple processors, such as Fig. 9 901 and processor 907 in the embodiment. Each of these processors may be a single-CPU processor or a multi-CPU processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0163] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0164] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for receiving data, characterized in that: The device comprises a microwave source, a detection light source, an atomic gas chamber, a coupling light source and a data detection module; The microwave source is used to transmit local oscillator microwaves to the atomic gas chamber, wherein the atomic gas chamber includes signal microwaves associated with the first data; The detection light source is used to split the first detection light into n second detection lights, and emit the n second detection lights to the first side of the atomic gas chamber, the sum of waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, and n is an integer greater than 1; The coupling light source is used to split the first coupling light into n second coupling lights, and emit the n second coupling lights to the second side of the atomic gas chamber, the sum of waist spot areas of the n second coupling lights is equal to the waist spot area of ​​the first coupling light, the first side and the second side are two opposite sides of the atomic gas chamber, and the n second detection lights correspond to the n second coupling lights; Wherein, the n-channel second detection light and the n-channel second coupling light form n-channel excitation channels in the atomic gas chamber, each excitation channel includes a second detection light and a second coupling light corresponding to each other, the n-channel excitation channels are used to transition the state of atoms in the atomic gas chamber to a Rydberg state, and the atoms in the Rydberg state are used to modulate the n-channel second detection light under the action of the signal microwave and the local oscillator microwave to form n-channel detection light signals associated with the first data, and the n-channel detection light signals are emitted to the data detection module; The data detection module is used to obtain the first data based on the n detection optical signals.

2. The device according to claim 1, characterized in that The beam spacing between two adjacent second detection lights is determined based on the waist spot radius of the two second detection lights, the movement speed and lifetime of the Rydberg state atoms.

3. The device according to claim 1, characterized in that The waist radius of each second detection light is respectively smaller than or equal to the waist radius of the second coupling light corresponding to each second detection light.

4. The device according to any one of claims 1 to 3, characterized in that: The data detection module includes a photoelectric detector and a demodulation module; The photoelectric detector is used to superimpose the n detection light signals into one detection light signal, and convert the one detection light signal into an electrical signal; The demodulation module is used to demodulate the electrical signal to obtain the first data.

5. The device according to any one of claims 1 to 4, characterized in that: The detection light source includes a detection light generator and a first spectrometer; The detection light generator is used to emit the first detection light to the first spectrometer; The first beam splitter is used to split the first detection light into n paths of second detection light, and emit the n paths of second detection light to the first side of the atomic gas chamber.

6. The device according to claim 5, characterized in that The first spectrometer is used to receive a control signal, where the control signal corresponds to a target waist spot radius and / or a target beam spacing, and splits the first detection light into the n second detection lights based on the control signal, where the waist spot radius of the n second detection lights is equal to the target waist spot radius, and / or the beam spacing between two adjacent second detection lights in the n second detection lights is equal to the target beam spacing.

7. The device according to claim 5 or 6, characterized in that The detection light source also includes a reflector; The detection light generator is used to emit the first detection light to the reflector; The reflector is used to reflect the first detection light to the first spectrometer.

8. The device according to claim 5 or 6, characterized in that The detection light source also includes a reflector; The first beam splitter is used to transmit the n-channel second detection light to the reflector; The reflector is used to reflect the n-path second detection light to the first side of the atomic gas chamber.

9. The device according to any one of claims 1 to 8, characterized in that: The coupling light source comprises a coupling light generator and a second beam splitter; The coupling light generator is used to emit the first coupling light to the second beam splitter; The second beam splitter is used to split the first coupling light into n second coupling lights, and emit the n second coupling lights to the second side of the atomic gas chamber.

10. The device according to claim 9, characterized in that The coupled light source further comprises a dichroic mirror, the dichroic mirror is located between the atomic gas chamber and the data detection module, and the n-channel detection light signals are emitted to the data detection module through the dichroic mirror; The second beam splitter is used to transmit the n-channel second coupling light to the dichroic mirror; The dichroic mirror is used to reflect the n-path second coupling light to the second side of the atomic gas chamber.

11. The device according to any one of claims 1 to 10, characterized in that: The device is a Rydberg atomic receiver.

12. The device according to any one of claims 1 to 11, characterized in that: The atoms in the atomic gas chamber are alkali metal atoms.

13. A method for receiving data, characterized in that: The method comprises: transmitting a local oscillator microwave to an atomic gas chamber, wherein the atomic gas chamber includes a signal microwave associated with the first data; Splitting the first detection light into n second detection lights, emitting the n second detection lights to the first side of the atomic gas chamber, wherein the sum of waist spot areas of the n second detection lights is equal to the waist spot area of ​​the first detection light, and n is an integer greater than 1; Splitting the first coupling light into n second coupling lights, emitting the n second coupling lights to the second side of the atomic gas chamber, the sum of waist spot areas of the n second coupling lights being equal to the waist spot area of ​​the first coupling light, the first side and the second side being opposite sides of the atomic gas chamber, wherein the n second detection lights and the n second coupling lights form n excitation channels in the atomic gas chamber, each excitation channel comprising one second detection light and one second coupling light corresponding to each other, the n excitation channels being used to transition the state of atoms in the atomic gas chamber to a Rydberg state, and the atoms in the Rydberg state being used to modulate the n second detection lights under the action of the signal microwave and the local oscillator microwave to form n detection light signals associated with the first data; The first data is obtained based on the n detection optical signals.

14. The method according to claim 13, characterized in that The obtaining the first data based on the n-path detection optical signals includes: Superimposing the n detection optical signals into one detection optical signal; Converting the detection optical signal into an electrical signal; The electrical signal is demodulated to obtain the first data.

15. The method according to claim 13 or 14, characterized in that The spacing between two adjacent second detection lights among the n second detection lights is determined based on the waist radii of the two second detection lights, the movement speed and lifetime of the Rydberg state atoms.

16. The method according to any one of claims 13 to 15, characterized in that: The waist radius of each channel of the second detection light is respectively smaller than or equal to the waist radius of the second coupling light corresponding to each channel of the second detection light.

17. The method according to any one of claims 13 to 16, characterized in that: The atoms in the atomic gas chamber are alkali metal atoms.

18. A device for receiving data, characterized in that: Each of the devices includes at least one processor and at least one memory, wherein the at least one memory stores computer-readable instructions; the at least one processor executes the computer-readable instructions so that the device executes the method according to any one of claims 13-17.

19. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 13 to 17 is implemented.

20. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 13 to 17 is implemented.

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