Fujitsu had nine patents in quantum computing during Q1 2024. Fujitsu Ltd filed a patent for an optical waveguide with a diamond layer containing a complex defect, clad layers, and a metal layer in Schottky contact. Another patent involves an information processing apparatus that optimizes energy reduction by determining combinations of data qubits with errors and identifying errors to reduce overall energy. GlobalData’s report on Fujitsu gives a 360-degree view of the company including its patenting strategy. Buy the report here.

Fujitsu grant share with quantum computing as a theme is 22% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Optical waveguide, quantum computing device, and method for manufacturing optical waveguide (Patent ID: US20240094459A1)

The patent filed by Fujitsu Ltd. describes an optical waveguide comprising a diamond layer with complex defects, first and second clad layers with specific refractive indices, and a metal layer in Schottky contact with the second clad layer. The second clad layer includes a polarity and spontaneous polarization, while the metal layer contains Au, Cu, or Ag and is less than 10 nm thick. The waveguide is designed for quantum computing applications and can be manufactured by forming the diamond layer, clad layers, and metal layer in a specific sequence.

The optical waveguide's unique design allows for efficient transmission of light signals for quantum computing devices. The inclusion of complex defects in the diamond layer, along with specific refractive indices and polarization properties of the clad layers, ensures optimal performance. The method of manufacturing the waveguide involves precise formation of each layer to achieve the desired structure. Overall, the patent outlines a novel approach to optical waveguide design tailored for quantum computing applications, with potential implications for the advancement of quantum technologies.

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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.