KT had seven patents in quantum computing during Q4 2023. KT Corp filed patents for a quantum key distribution method and device, allowing secure transmission of quantum cryptography keys through optical units and post-processors. Another patent involves a single photon detector with a gate signal generator and first photon detector operating in Geiger mode to detect single photons at specific time intervals. GlobalData’s report on KT gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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KT grant share with quantum computing as a theme is 42% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Method and device for quantum key distribution (Patent ID: US20230396421A1)
The patent filed by KT Corp. describes a method and device for quantum key distribution, where a quantum key distribution device is connected to another device through a quantum channel to distribute a quantum cryptography key. The device includes an optical unit with an optical element for transmitting information and a post-processor that calculates the quantum cryptography key by processing random numbers generated by the optical unit. The device can have multiple unit optical modules and post-processing modules to enhance key distribution efficiency.
The claims associated with the patent detail various configurations of the quantum key distribution device, including different combinations of unit optical modules and post-processing modules to optimize the generation and processing of random numbers for key distribution. The device can adjust the number of post-processing modules based on the random number generation rate of the optical unit, operate according to different protocols used in the optical modules, and establish trusted nodes for secure key distribution. Additionally, the method outlined in the patent involves generating random numbers using the optical unit and calculating the quantum cryptography key using the post-processor, with variations in the number of unit modules for both components to improve key distribution efficiency.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
