# US 2023/0054964 A1 · Method for generating squeezed quantum illumination light source and quantum radar device using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054964 A1 - Document ID: US20230054964A1 - Status: Published application - Kind: A1 - Application number: 17/888,865 - Filed: 2022-08-16 - Published: 2023-02-23 - Earliest claimed: 2021-08-18 - Assignees: Agency for Defense Development - Applicants: Agency for Defense Development - Inventors: Yong Gi JO; Taek JEONG; Jung Hyun KIM; Duk Young KIM; Yong Sup IHN; Zae III KIM; Su Yong LEE - Web page: https://patentgrep.com/patent/US20230054964A1 ## CPC - G01S 7/03: Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver - G01S 7/4814: {of transmitters alone} - G01S 7/4816: {of receivers alone} - G01S 7/4911: Transmitters - G01S 13/865: {Combination of radar systems with lidar systems} - G01S 17/32: using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated - G01S 7/411: {Identification of targets based on measurements of radar reflectivity (G01S7/415 takes precedence)} - H01S 3/0057: {Temporal shaping, e.g. pulse compression, frequency chirping (soliton generation and propagation G02F1/3513, H01S3/063 and H01S3/108)} - H01S 3/09: Processes or apparatus for excitation, e.g. pumping - H10F 77/14: Shape of semiconductor bodies; Shapes, relative sizes or dispositions of semiconductor regions within semiconductor bodies - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION ## Abstract Provided is a method of generating a squeezed quantum illumination light source, including generating a dual mode squeezed light source including a signal mode and an idler mode, obtaining a degree of additional squeezing for the dual mode squeezed light source based on object information, determining a squeezing angle and a degree of operation that satisfy the degree of additional squeezing for each of the signal mode and the idler mode, and squeezing the dual mode squeezed light source based on the squeezing angle and the degree of operation, and provided is a quantum radar device using the squeezed quantum illumination light source. ## Claims ### Claim 1 A method of generating a squeezed quantum illumination light source, the method comprising: generating a dual mode squeezed light source comprising a signal mode and an idler mode; obtaining a degree of additional squeezing for the dual mode squeezed light source based on object information and information about the receiver configured to receive the dual mode squeezed light source; determining a squeezing angle and a degree of operation that satisfy the degree of additional squeezing for each of the signal mode and the idler mode; and squeezing the dual mode squeezed light source based on the squeezing angle and the degree of operation. ### Claim 2 (depends on 1) The method of claim 1, wherein the signal model is a mode for a signal irradiated to the object, and wherein the idler mode is a mode for a signal transmitted to a receiver. ### Claim 3 (depends on 1) The method of claim 1, wherein the object information comprises at least one of a reflecting rate and a thermal noise ratio of the object. ### Claim 4 (depends on 1) The method of claim 1, wherein the receiver is either an optimized receiver or a general receiver. ### Claim 5 (depends on 4) The method of claim 4, wherein the determining the squeezing angle and the degree of operation, if the receiver is the optimized receiver, comprises determining a squeezing angle and a degree of operation only for the signal mode. ### Claim 6 (depends on 4) The method of claim 4, wherein the determining the squeezing angle and the degree of operation, if the receiver is the general receiver, comprises determining that a squeezing angle and a degree of operation of the signal mode are the same as a squeezing angle and a degree of operation of the idler mode. ### Claim 7 (depends on 1) The method of claim 1, wherein the degree of additional squeezing is achieved with multiple-times squeezing with a same squeezing angle. ### Claim 8 (depends on 1) The method of claim 1, wherein the squeezing the dual mode squeezed light source is performed in at least one of an optical frequency band and a microwave frequency band. ### Claim 9 A quantum radar device using a squeezed quantum illumination light source, the device comprising: a transmitter configured to transmit a radar signal; a receiver configured to receive a radar signal; and a controller configured to control the transmitter and the receiver, wherein the controller is configured to: generate a dual mode squeezed light source that includes a signal mode and an idler mode; determine a degree of additional squeezing for the dual mode squeezed light source based on object information and information about the receiver configured to receive the dual mode squeezed light source; determine a squeezing angle and a degree of operation that satisfy the degree of additional squeezing for each of the signal mode and the idler mode; and squeeze the dual mode squeezed light source based on the squeezing angle and the degree of operation. ### Claim 10 A computer-readable non-transitory medium having a program for generating a squeezed quantum illumination light source, the program comprising instructions for: generating a dual mode squeezed light source including a signal mode and an idler mode; determining a degree of additional squeezing for the dual mode squeezed light source based on object information and information about the receiver configured to receive the dual mode squeezed light source; determining a squeezing angle and a degree of operation that satisfy the degree of additional squeezing for each of the signal mode and the idler mode; and squeezing the dual mode squeezed light source based on the squeezing angle and the degree of operation. ### Claim 11 (depends on 10) The computer-readable non-transitory medium of claim 10, wherein the signal model is a mode for a signal irradiated to the object, and wherein the idler mode is a mode for a signal transmitted to a receiver. ### Claim 12 (depends on 10) The computer-readable non-transitory medium of claim 10, wherein the object information comprises at least one of a reflecting rate and a thermal noise ratio of the object. ### Claim 13 (depends on 10) The computer-readable non-transitory medium of claim 10, wherein the receiver is either an optimized receiver or a general receiver. ### Claim 14 (depends on 13) The computer-readable non-transitory medium of claim 13, wherein the determining the squeezing angle and the degree of operation, if the receiver is the optimized receiver, comprises determining a squeezing angle and a degree of operation only for the signal mode. ### Claim 15 (depends on 13) The computer-readable non-transitory medium of claim 13, wherein the determining the squeezing angle and the degree of operation, if the receiver is the general receiver, comprises determining that a squeezing angle and a degree of operation of the signal mode are the same as a squeezing angle and a degree of operation of the idler mode. ### Claim 16 (depends on 10) The computer-readable non-transitory medium of claim 10, wherein the degree of additional squeezing is achieved with multiple-times squeezing with a same squeezing angle. ### Claim 17 (depends on 10) The computer-readable non-transitory medium of claim 10, wherein the squeezing the dual mode squeezed light source is performed in at least one of an optical frequency band and a microwave frequency band.