International Business Machines had 123 patents in quantum computing during Q4 2023. IBM has developed a qubit system for quantum computing that includes a semiconductor structure with an array of plunger gates and magnetic structures to generate stray fields, allowing for different total magnetic fields at different qubit locations. Techniques using stark tone pulses are used to mitigate cross-resonance collision in qubits, with a tone management component controlling pulse application. Quantum gradient algorithms are described to provide a quantum advantage over conventional methods, with a quantum circuit implementing a phase oracle and scaling complexity. VQE is accelerated by grouping Pauli strings based on joint measurability, and a method for validation and runtime estimation of a quantum algorithm involves analyzing parameters and transforming the algorithm accordingly. GlobalData’s report on International Business Machines gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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International Business Machines grant share with quantum computing as a theme is 40% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Magnetic structures for resonant manipulation of spin (Patent ID: US20230420548A1)
The patent by IBM describes a qubit system for quantum computing that includes a semiconductor structure with an array of plunger gates forming a linear 1D array of quantum dots (QDs) and an array of magnetic structures generating stray fields in the same plane as the QDs. The QDs are positioned between the poles of individual magnetic structures, and an external field is applied parallel to the QD array to create different total magnetic fields at various qubit locations.
The apparatus and method claims detail the specific configuration and operation of the qubit system, including the structure of the magnetic elements, the positioning of the QDs, and the application of external fields to manipulate the magnetic structures. The method involves forming a 1D array of QDs and generating stray fields using magnetic structures, with the potential to create a 2D array by interconnecting multiple instances of the 1D array. The system aims to achieve different Larmor frequencies at different QD positions, enhancing the efficiency and precision of quantum computing operations. Additionally, the stray fields generated by the magnetic structures include gradient-reduced zones to protect electrons during qubit manipulation, highlighting the focus on optimizing the system for practical quantum computing applications.
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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.
