CN116170080A - Unmanned aerial vehicle-mounted function definable node quantum communication method - Google Patents
Unmanned aerial vehicle-mounted function definable node quantum communication method Download PDFInfo
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Abstract
According to the unmanned aerial vehicle-mounted function definable node quantum communication method, devices such as a quantum light source, a single photon detector, a quantum communication coding module, a quantum communication decoding module and a miniature atomic clock are integrated into the same optical system, so that the implementation processes of the functions such as quantum communication signal transmission, quantum communication signal reception, quantum communication optical relay and quantum time synchronization can be flexibly switched among various functions according to application requirements by using the same optical link and a tracking system. The unmanned aerial vehicle-mounted function definable quantum communication node can establish a quantum communication optical level and an information level forwarding mechanism for a plurality of unmanned aerial vehicles, an unmanned aerial vehicle group network formed by the node can be freely switched among a multi-hop quantum communication link, a quantum communication network and a quantum time synchronization network, and a solid foundation is laid for functions of unmanned aerial vehicle group communication safety, unmanned aerial vehicle-based free space communication safety, unmanned aerial vehicle-based time service and the like.
Description
Technical Field
The invention belongs to the interdisciplines of geometric optics, quantum communication and time service technologies, in particular to a quantum communication method for realizing various functions such as quantum communication, optical relay, laser time service and the like which are defined as required by sharing an optical link and are arranged on an air maneuvering platform such as an unmanned plane and the like, and particularly relates to a node quantum communication method with definable functions on the unmanned plane.
Background
The optical communication is mainly divided into two types of optical fiber communication and free space laser communication, wherein the channel of the optical fiber communication is an optical fiber, and the optical fiber communication has the advantages of long distance, large capacity, strong stability and the like, and is a main transmission means of the physical layer of the existing fixed communication network; although free space laser communication has larger communication capacity, two communication parties need to enter the view field through accurate tracking equipment, the transmission distance is greatly influenced by meteorological conditions, the stability is relatively poor, and nevertheless, in some mobile communication occasions without optical fiber channels, the free space laser communication is still an effective transmission means.
The unmanned aerial vehicle is an important free space laser communication system carrying platform and has the advantages of large moving range, strong flexibility and the like; through the cooperative networking of a plurality of unmanned aerial vehicles, the large-scale remote control operation such as crop monitoring, pesticide spraying and the like can be completed. In addition, unmanned aerial vehicle platform can also regard as a lift-off wifi, provides the service of forwarding for the user in the coverage.
Disclosure of Invention
Aiming at the defects, the technical problem to be solved by the invention is how to integrate a quantum light source, a single photon detector, a quantum communication coding module, a quantum communication decoding module, a micro atomic clock and other multi-type equipment into the same optical system and mount the multi-type equipment in an unmanned aerial vehicle platform, realize the structural adjustment of the optical system through the transmittance regulation of key devices, and realize the flexible switching of multiple functions such as bidirectional quantum communication, quantum communication optical relay, quantum time synchronization and the like by utilizing a tracking aiming system and an optical link of the same set.
In view of the fact that the endurance time of an unmanned aerial vehicle highly depends on the load of the unmanned aerial vehicle, the unmanned aerial vehicle laser communication system needs to multiplex various devices as much as possible to reduce the lift-off load besides considering the requirements of stability, safety and the like, and the invention aims to provide an unmanned aerial vehicle function definable node quantum communication method, which comprises an integrated quantum communication system and a quantum time synchronization system, wherein when an unmanned aerial vehicle node performs bidirectional quantum communication with other nodes or ground stations, the quantum communication system establishes a communication link with other nodes or ground stations through one of two tracking systems in a bidirectional way and completes a communication process; when the unmanned aerial vehicle node is in charge of quantum communication optical relay between two nodes or two ground stations or another node and the ground station, the two paths of tracking and aiming systems operate simultaneously, and an optical original of a bidirectional output signal of the quantum communication system is regulated and controlled to be a reflecting mirror; when the unmanned aerial vehicle node performs quantum time synchronization with other nodes or ground stations, the quantum entanglement distribution system driven by the atomic clocks completes the sending and receiving of clock signals, calculates clock difference signals between the two atomic clocks and completes a quantum time synchronization function.
Preferably, the quantum communication system is formed by integrating a quantum light source, a quantum communication signal modulation module, a quantum communication signal demodulation module and a classical wireless communication signal module.
Preferably, the quantum time synchronization system is formed by integrating a miniature atomic clock and a quantum entanglement distribution system.
Preferably, the method can have free switching capability of three functions of bidirectional quantum communication, quantum communication optical relay forwarding and quantum time synchronization by controlling four optical lenses.
The invention provides an unmanned aerial vehicle-mounted function definable node quantum communication method, which comprises two nodes A and B, wherein the working flow of a bidirectional quantum communication function between the node A and the node B is as follows:
step 1, an entangled photon is sent by an entangled light source of a node A, the entangled photon is controlled to pass through a modulation module and encoded by a first optical lens, passes through a third optical lens after passing through an optical circulator, and is controlled to be transmitted along an upper tracking system and transmitted to a node B by a quantum communication signal through a free space optical path;
and 2, after the quantum communication signal sent by the node B is received by the tracking system, the quantum communication signal is input into a second optical lens through a fourth optical lens, a third optical lens and a circulator, the second optical lens is controlled to pass through a decoding module and be decoded, and finally the quantum communication signal is detected by a single photon detector.
Preferably, the method specifically comprises the following steps:
s1, integrating a quantum light source, a single photon detector, a quantum communication coding module, a quantum communication decoding module, a micro atomic clock and multi-type equipment into the same optical system, wherein a quantum light source output signal selectively passes through or does not pass through the quantum communication coding module, selectively passes through one of two tracking systems, selectively passes through or does not pass through the decoding module, and finally is received by the single photon detector which is stably coupled with a chip integrated optical path in a low-loss mode;
s2, two modes of reflection communication or independent operation can be executed between the two tracking and aiming systems through chip integrated control;
and S3, establishing a communication link between one tracking and aiming system and the other node or the ground station, and realizing flexible switching of bidirectional quantum communication and quantum time synchronization functions by enabling/disabling the quantum communication coding and decoding module, and disabling/enabling the micro atomic clock and the time interval counter.
Preferably, the S1 quantum light source is a chip integrated entangled light source, and the single photon detector is a semiconductor avalanche diode, a quantum communication encoding module, and a quantum communication decoding module.
Preferably, the classical line required for post-processing of the above-mentioned S1 quantum communication protocol can be accomplished by an additional laser communication or radio communication system.
Preferably, the step S3 may further use two tracking and aiming systems to establish a communication link with another two nodes or a node, a ground station or two ground stations, and serve as an optical relay function for providing quantum communication signals or quantum time synchronization signals for two interconnected objects.
The present invention provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the above method.
Compared with the prior art, the invention has the following advantages:
firstly, the invention provides a multifunctional quantum communication node based on a single optical system, which can provide important references for the on-demand implementation of functions such as an unmanned aerial vehicle group quantum communication link (wherein part of nodes only serve as optical relay functions), an unmanned aerial vehicle group quantum communication network (wherein part of nodes execute information relay functions), an unmanned aerial vehicle group quantum time synchronization network and the like;
secondly, in view of the fact that the tracking and aiming system occupies most of load balance weight of free space laser communication, the design concept of the multiplexing optical system is provided, so that the communication load of the unmanned aerial vehicle group can be greatly compressed, and the operation capacity of a single node is improved;
finally, the invention has a certain innovation in the aspect of function multiplexing of entangled light sources, namely, the flexible switching of two different kinds of services of quantum communication and quantum time synchronization can be realized by utilizing a single entangled light source, the quantum time synchronization precision can provide clock reference for a quantum communication system, and the quantum communication can also provide a transmission channel for quantum time synchronization protocol interaction.
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In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are needed to be used in the embodiments of the present invention will be briefly described, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of one embodiment of an unmanned airborne function definable node quantum communication method of the present invention;
FIG. 2 illustrates a schematic diagram of a particular embodiment of an unmanned on-board function definable node quantum communication network of the present invention;
fig. 3 shows a schematic diagram of another embodiment of the unmanned airborne function definable node quantum communication method of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
As shown in fig. 1, the present invention provides an embodiment of an unmanned aerial vehicle function definable node quantum communication method, including:
s101, establishing a bidirectional quantum communication system, and integrating a quantum light source, a quantum communication signal modulation module, a quantum communication signal demodulation module, a classical wireless communication signal module and the like into the quantum communication system;
s102, establishing a bidirectional quantum time synchronization system, and integrating a miniature atomic clock and a quantum entanglement distribution system into the quantum time synchronization system;
s103, multiple functions are operated in parallel or flexibly switched, and when the unmanned aerial vehicle node performs bidirectional quantum communication with other nodes or ground stations, the bidirectional quantum communication system establishes a communication link with other nodes or ground stations through one of the two tracking systems and completes a communication process; when the unmanned aerial vehicle node is in charge of quantum communication optical relay between two nodes or two ground stations or another node and the ground station, the two paths of tracking and aiming systems operate simultaneously, and an optical original of an output signal of the bidirectional quantum communication system is regulated and controlled to be a reflecting mirror; when the unmanned aerial vehicle node performs quantum time synchronization with other nodes or ground stations, the quantum entanglement distribution system driven by the atomic clocks completes the sending and receiving of clock signals, calculates clock difference signals between the two atomic clocks and completes a quantum time synchronization function.
In some embodiments, the quantum communication system is integrated by a quantum light source, a quantum communication signal modulation module, a quantum communication signal demodulation module and a classical wireless communication signal module.
In some embodiments, the quantum time synchronization system is integrated with a miniature atomic clock and a quantum entanglement distribution system.
In some embodiments, the above method can provide free switching capability for three functions of two-way quantum communication, quantum communication optical relay forwarding and quantum time synchronization by controlling four optical lenses.
In some embodiments, the system is provided with two nodes A and B, and is characterized in that the two-way quantum communication function workflow between the node A and the node B is as follows:
step 1, an entangled photon is sent by an entangled light source of a node A, the entangled photon is controlled to pass through a modulation module and encoded by a first optical lens, passes through a third optical lens after passing through an optical circulator, and is controlled to be transmitted along an upper tracking system and transmitted to a node B by a quantum communication signal through a free space optical path;
and 2, after the quantum communication signal sent by the node B is received by the tracking system, the quantum communication signal is input into a second optical lens through a fourth optical lens, a third optical lens and a circulator, the second optical lens is controlled to pass through a decoding module and be decoded, and finally the quantum communication signal is detected by a single photon detector.
As shown in fig. 2, the present embodiment further provides a network of entanglement-based function definable quantum communication nodes, and by controlling the four optical lenses 1, 2, 3, and 4, the free switching capability of the three functions of bidirectional quantum communication, quantum communication optical relay forwarding, and quantum time synchronization can be provided.
1. The two-way quantum communication function workflow between the A node and the B node is as follows:
(1) The node A entangled light source sends entangled photons, the optical lens 1 is controlled to enable the entangled photons to pass through the modulation module and be encoded, the entangled photons pass through the all-pass optical lens 3 after passing through the optical circulator, the optical lens 4 is controlled to enable the entangled photons to be transmitted along the upper tracking system, and quantum communication signals are transmitted to the node B through a free space optical path;
(2) After being received by the tracking system, the quantum communication signal sent by the node B is input into the optical lens 2 through the optical lenses 4 and 3 and the circulator, and the optical lens 2 is controlled to pass through the decoding module and decoded, and finally is detected by the single photon detector.
2. The quantum communication function workflow forwarded by the A node relay between the B node and the C node is as follows:
(1) The node B generates a quantum communication signal according to the steps, and sends the quantum communication signal to a tracking system on the way of the node A through one of the tracking systems;
(2) Controlling the optical lens 3 or the optical lens 4 to be changed into a total reflection lens, reflecting the quantum communication signal to a tracking system of the node A for lowering and further transmitting to a tracking system of the node C
3. The quantum time synchronization function workflow between the A node and the B node is as follows:
(1) The node A entangled light source sends entangled photons, the optical lens 1 is controlled to enable the entangled photons to pass through the all-pass optical lens 3 after directly passing through the optical circulator, the optical lens 4 is controlled to enable the entangled photons to be transmitted along the up-tracking system, and quantum time synchronization signals are transmitted to the node B through a free space light path;
(2) After being received by a tracking system, the quantum time synchronization signal sent by the node B is input into the optical lens 2 through the optical lenses 4 and 3 and the circulator and directly enters a single photon detector for detection;
(3) And the A node and the B node use the atomic clocks as references, the time difference of the entangled photons after transmission is calculated through a time interval counter, the clock difference of the atomic clocks between the A node and the B node is obtained, and the atomic clock time references are adjusted to realize time synchronization.
As shown in fig. 3, this embodiment shows an embodiment of a quantum communication method of an unmanned aerial vehicle function definable node, which specifically includes:
s201, integrating a quantum light source, a single photon detector, a quantum communication coding module, a quantum communication decoding module, a micro atomic clock and other multi-type devices into the same optical system, wherein the quantum light source can be a chip integrated entangled light source, the single photon detector can be a semiconductor avalanche diode, the quantum communication coding module and the quantum communication decoding module can be prepared through a chip integrated optical path, and the meaning of integration into the same optical system is that a quantum light source output signal selectively passes through or does not pass through the quantum communication coding module through the chip integrated optical device, selectively passes through one of two tracking systems, selectively passes through or does not pass through the decoding module, is finally received by the single photon detector which is stably coupled with the chip integrated optical path in a low loss mode, and a classical line required by quantum communication protocol post-processing can be completed by an additional laser communication system or a radio communication system;
s202, two modes of reflection communication or independent operation can be executed between two tracking and aiming systems through chip integrated control;
s203, according to application requirements, the function definable quantum communication node can execute multiple functions, namely, a communication link is established between one tracking sighting system and another node or ground station, flexible switching of bidirectional quantum communication and quantum time synchronization functions is realized by enabling/not enabling a quantum communication coding and decoding module and not enabling/enabling a micro atomic clock and a time interval counter, and a communication link is established between the two tracking sighting systems and the other two nodes or one node, one ground station or two ground stations to serve as an optical relay function for providing quantum communication signals or quantum time synchronization signals for two interconnection objects.
The invention also provides an embodiment of the node quantum communication method with definable unmanned aerial vehicle-mounted functions, which integrates a quantum light source, a single photon detector, a quantum communication coding module, a quantum communication decoding module, a micro atomic clock and other devices into the same optical system, so that the implementation processes of the functions of quantum communication signal transmission, quantum communication signal reception, quantum communication optical relay, quantum time synchronization and the like can use the same optical link and a tracking system, flexibly switch among various functions according to application requirements, and implement the design concept of 'one set of equipment and multiple functions'.
In some embodiments, quantum communication aims at fidelity lossless quantum state transmission, the communication process meets the principles of Hassenberg measurement inaccuracy, quantum unclonable principle, quantum inseparable principle and the like, the unconditional security of a theoretical level is provided, and carriers for information transfer include, but are not limited to, single photons, entangled single photons, spintrons, continuous variable modulation optical signals and the like, and the quantum communication specific protocol, system structure, networking mode and specific parameters are not limited.
In some embodiments, the quantum time synchronization compiles a time synchronization signal onto a quantum state, clock synchronization is realized through quantum state fidelity lossless transmission, and both time synchronization sides need to be provided with high-precision clocks and take the clock as a reference clock for quantum communication; the quantum time synchronization has higher precision than classical time synchronization, the clock synchronization signal can be compatible with the security of quantum communication, and the quantum time synchronization taking light quanta as a carrier has the electromagnetic interference resistance.
In some embodiments, the specific scheme and parameter indicators of quantum time synchronization are not limited, and the specific implementation and standard protocols of the quantum time synchronization system are not limited.
In some embodiments, the relay node of the optical relay establishes a communication link between the other two communication nodes through the tracking and aiming system, wherein one communication node transmits the quantum communication signal to the relay node through the tracking and aiming system, and outputs from the other tracking and aiming system and transmits the quantum communication signal to the other communication node after internally passing through optical reflection, and the optical relay means that the relay node is only responsible for reflecting the signal and is not responsible for analyzing the information content, and the optical relay can forward the quantum communication signal, the quantum time synchronization signal and the laser communication signal, so that the specific structure and parameters are not limited.
In some embodiments, the quantum communication node with definable functions can establish a quantum communication optical level and an information level forwarding mechanism for a plurality of unmanned aerial vehicles, an unmanned aerial vehicle group network formed by the node can be freely switched among a multi-hop quantum communication link, a quantum communication network and a quantum time synchronization network, the judging standard and the starting mechanism of the function definition are not limited, the application mode of parallel operation or independent operation among the functions is not limited, and the on-demand switching of multiple functions of the multiplexing optical system is all within the scope of the claims of the invention.
Compared with the prior art, the invention has the following advantages:
firstly, the invention provides a multifunctional quantum communication node based on a single optical system, which can provide important references for the on-demand implementation of functions such as an unmanned aerial vehicle group quantum communication link (wherein part of nodes only serve as optical relay functions), an unmanned aerial vehicle group quantum communication network (wherein part of nodes execute information relay functions), an unmanned aerial vehicle group quantum time synchronization network and the like;
secondly, in view of the fact that the tracking and aiming system occupies most of load balance weight of free space laser communication, the design concept of the multiplexing optical system is provided, so that the communication load of the unmanned aerial vehicle group can be greatly compressed, and the operation capacity of a single node is improved;
finally, the invention has a certain innovation in the aspect of function multiplexing of entangled light sources, namely, the flexible switching of two different kinds of services of quantum communication and quantum time synchronization can be realized by utilizing a single entangled light source, the quantum time synchronization precision can provide clock reference for a quantum communication system, and the quantum communication can also provide a transmission channel for quantum time synchronization protocol interaction.
For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in one or more software and/or hardware elements when implemented in the present application.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. The quantum communication method of the unmanned aerial vehicle-mounted function definable node comprises an integrated quantum communication system and a quantum time synchronization system, and is characterized in that when the unmanned aerial vehicle node performs bidirectional quantum communication with other nodes or ground stations, the quantum communication system establishes a communication link with the other nodes or ground stations through one of two paths of tracking systems in a bidirectional manner and completes a communication process; when the unmanned aerial vehicle node is in charge of quantum communication optical relay between two nodes or two ground stations or another node and the ground station, the two paths of tracking and aiming systems operate simultaneously, and an optical original of a bidirectional output signal of the quantum communication system is regulated and controlled to be a reflecting mirror; when the unmanned aerial vehicle node performs quantum time synchronization with other nodes or ground stations, the quantum entanglement distribution system driven by the atomic clocks completes the sending and receiving of clock signals, calculates clock difference signals between the two atomic clocks and completes a quantum time synchronization function.
2. The method for quantum communication of the unmanned aerial vehicle function definable node according to claim 1, wherein the quantum communication system is formed by integrating a quantum light source, a quantum communication signal modulation module, a quantum communication signal demodulation module and a classical wireless communication signal module.
3. The method of claim 1, wherein the quantum time synchronization system is integrated with a micro atomic clock and a quantum entanglement distribution system.
4. The method of quantum communication of definable nodes of unmanned aerial vehicle according to claim 1, wherein the method can provide free switching capability of three functions of two-way quantum communication, quantum communication optical relay forwarding and quantum time synchronization by controlling four optical lenses.
5. The unmanned aerial vehicle function definable node quantum communication method according to claim 1, comprising two nodes a and B, wherein the bidirectional quantum communication function workflow between the nodes a and B is as follows:
step 1, an entangled photon is sent by an entangled light source of a node A, the entangled photon is controlled to pass through a modulation module and encoded by a first optical lens, passes through a third optical lens after passing through an optical circulator, and is controlled to be transmitted along an upper tracking system and transmitted to a node B by a quantum communication signal through a free space optical path;
and 2, after the quantum communication signal sent by the node B is received by the tracking system, the quantum communication signal is input into a second optical lens through a fourth optical lens, a third optical lens and a circulator, the second optical lens is controlled to pass through a decoding module and be decoded, and finally the quantum communication signal is detected by a single photon detector.
6. The unmanned airborne function definable node quantum communication method according to claim 1, wherein the method comprises the steps of:
s1, integrating a quantum light source, a single photon detector, a quantum communication coding module, a quantum communication decoding module, a micro atomic clock and multi-type equipment into the same optical system, wherein a quantum light source output signal selectively passes through or does not pass through the quantum communication coding module, selectively passes through one of two tracking systems, selectively passes through or does not pass through the decoding module, and finally is received by the single photon detector which is stably coupled with a chip integrated optical path in a low-loss mode;
s2, two modes of reflection communication or independent operation can be executed between the two tracking and aiming systems through chip integrated control;
and S3, establishing a communication link between one tracking and aiming system and the other node or the ground station, and realizing flexible switching of bidirectional quantum communication and quantum time synchronization functions by enabling/disabling the quantum communication coding and decoding module, and disabling/enabling the micro atomic clock and the time interval counter.
7. The method for quantum communication of the definable nodes of unmanned aerial vehicle according to claim 6, wherein the S1 quantum light source is a chip integrated entangled light source, and the single photon detector is a semiconductor avalanche diode, a quantum communication encoding module, or a quantum communication decoding module.
8. The method of claim 6, wherein classical routing required for the post-processing of the S1 quantum communication protocol is accomplished by an additional laser communication or radio communication system.
9. The method of claim 6, wherein S3 further uses two tracking and aiming systems to establish a communication link with another two nodes or a node, a ground station or two ground stations as an optical relay to provide quantum communication signals or quantum time synchronization signals to two interconnected objects.
10. A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the method of any of claims 1-9.
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