Patents by Inventor Seigo Tarucha

Seigo Tarucha has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic device using quantum dot
    Patent number: 8222629
    Abstract: An electronic device using quantum dots, which comprises a ferromagnetic micro magnet and performs individual ESR control on each multi-quantum bit in a power saving way. The electronic device comprising the ferromagnetic micro magnet (10) disposed in the vicinity of the quantum dots (8, 9) of a plurality of aligned semiconductor quantum dots, wherein a strong magnetic field is applied so as to induce electron spin resonance (ESR), and the layout of the ferromagnetic micro magnet (10) is changed, thereby controlling the resonance frequency of the quantum dots (8, 9). Under the condition where the resonance frequency of each quantum dot (8, 9) is controlled, swapping of the electron spins in the quantum dots (8, 9) is performed, thereby creating a quantum bit (QUBIT) required for quantum calculation.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: July 17, 2012
    Assignee: Japan Science and Technology Agency
    Inventors: Michel Pioro-Ladriere, Toshiaki Obata, Yun-Sok Shin, Toshihiro Kubo, Seigo Tarucha
  • ELECTRONIC DEVICE USING QUANTUM DOT
    Publication number: 20100270534
    Abstract: An electronic device using quantum dots, which comprises a ferromagnetic micro magnet and performs individual ESR control on each multi-quantum bit in a power saving way. The electronic device comprising the ferromagnetic micro magnet (10) disposed in the vicinity of the quantum dots (8, 9) of a plurality of aligned semiconductor quantum dots, wherein a strong magnetic field is applied so as to induce electron spin resonance (ESR), and the layout of the ferromagnetic micro magnet (10) is changed, thereby controlling the resonance frequency of the quantum dots (8, 9). Under the condition where the resonance frequency of each quantum dot (8, 9) is controlled, swapping of the electron spins in the quantum dots (8, 9) is performed, thereby creating a quantum bit (QUBIT) required for quantum calculation.
    Type: Application
    Filed: December 4, 2008
    Publication date: October 28, 2010
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Michel Pioro-Ladriere, Toshiaki Obata, Yun-Sok Shin, Toshihiro Kubo, Seigo Tarucha