Toshiba had 21 patents in quantum computing during Q2 2024. Toshiba Corp’s patents in Q2 2024 include a multiplexing device for quantum signals with adjustable intensity, a quantum cryptographic communication control device for selecting routes based on link cost and key guarantee amount, and a photonic assembly with an interferometer and phase modulator on separate substrates. GlobalData’s report on Toshiba gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Toshiba had no grants in quantum computing as a theme in Q2 2024.
Recent Patents
Application: Multiplexing device, qkd system, qkd device, multiplexing method, and adjustment method (Patent ID: US20240204993A1)
The patent filed by Toshiba Corp. describes a multiplexing device for quantum key distribution (QKD) systems. The device includes a multiplexing circuitry, branching circuitry, light receiving circuitry, and a processor. The multiplexing circuitry performs optical wavelength multiplexing on quantum signals from multiple QKD devices. The branching circuitry splits the multiplexed signal into a signal to be measured and a signal to be output externally. The processor adjusts the intensity of the output signals based on the measurement results and predetermined ratios. Additionally, the device includes a filter circuitry to filter quantum signals based on their wavelengths.
The patent also includes claims for the multiplexing device, a QKD system incorporating the device, and a method for adjusting the quantum signals. The claims detail the configuration of the multiplexing device, the adjustment of signal intensity to ensure one photon per pulse, and the interaction between the QKD devices and the multiplexing device. The method described involves performing optical wavelength multiplexing, branching the signal, measuring intensity, and adjusting the signal intensity based on the measurement results and predetermined ratios. Overall, the patent focuses on improving the efficiency and accuracy of quantum signal transmission in QKD systems.
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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.
