公开(公告)号：US10432144B2

公开(公告)日：2019-10-01

申请号：US15569500

申请日：2016-04-27

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Shingo Tamaru ,  Hitoshi Kubota ,  Akio Fukushima ,  Shinji Yuasa

IPC: H03B15/00 ,  H01L43/08 ,  H01L29/82 ,  H03L7/099 ,  H01F10/32 ,  H01L43/02 ,  H03L7/093 ,  H01L43/10 ,  H03L7/18

Abstract: A high-frequency phase-locked oscillation circuit having an extremely narrow peak width and a stable frequency so that a high-frequency wave that is oscillated by the MR element solves a problem of a large peak width of oscillation spectrum. The high-frequency phase-locked oscillation circuit includes a magnetoresistive element that oscillates a high-frequency wave with an oscillating frequency; a reference signal source that outputs a reference signal with a reference frequency; a phase-locked loop circuit having a phase comparator, a loop filter, and a frequency divider; an adder that adds a phase error signal output from the loop filter and a bias voltage for oscillating the high-frequency wave from the magnetoresistive element, and that inputs an added bias voltage to the magnetoresistive element; and a filter provided between the frequency divider and the magnetoresistive element.

公开(公告)号：US20220222564A1

公开(公告)日：2022-07-14

申请号：US17603517

申请日：2020-04-14

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Hitoshi Kubota ,  Shingo Tamaru ,  Akio Fukushima ,  Takahiro Mori ,  Takashi Matsukawa

IPC: G06N10/40 ,  H01L43/08 ,  H01L43/02

Abstract: The present invention addresses the problem of providing a quantum bit cell and a quantum bit integrated circuit having an easy-to-integrate structure. The quantum bit cell of the present invention including a spin torque oscillator capable of emitting a microwave with a propagation distance of 1 μm or less and having a maximum diameter of 1 μm or less, and a solid-state element quantum bit arranged near the spin torque oscillator at an interval of the propagation distance or less, where a quantum two-level system is controlled by the microwave.

公开(公告)号：US12165009B2

公开(公告)日：2024-12-10

申请号：US17603517

申请日：2020-04-14

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Hitoshi Kubota ,  Shingo Tamaru ,  Akio Fukushima ,  Takahiro Mori ,  Takashi Matsukawa

IPC: G06N10/40 ,  H10N50/10 ,  H10N50/80

Abstract: The present invention addresses the problem of providing a quantum bit cell and a quantum bit integrated circuit having an easy-to-integrate structure. The quantum bit cell of the present invention including a spin torque oscillator capable of emitting a microwave with a propagation distance of 1 μm or less and having a maximum diameter of 1 μm or less, and a solid-state element quantum bit arranged near the spin torque oscillator at an interval of the propagation distance or less, where a quantum two-level system is controlled by the microwave.

公开(公告)号：US11782106B2

公开(公告)日：2023-10-10

申请号：US17442612

申请日：2019-09-02

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Shingo Tamaru

IPC: G01R33/12 ,  G01R33/00 ,  F21V8/00

CPC classification number: G01R33/1223 ,  G01R33/0047 ,  G02B6/0011

Abstract: In the present disclosure, there is provided a permeability measurement jig including a first waveguide, wherein a signal line of the first waveguide comprises an excited magnetic part at one end side, and a magnetic field is generated at the excited magnetic part by an excitation signal, and a second waveguide, wherein a signal line of the second waveguide comprises a detection part at one end side, a detection signal is induced at the detection part due to an action of the magnetic field generated at the excited magnetic part to a measurement sample, and the detection part is placed on the excited magnetic part to face the excited magnetic part at a predetermined distance. A permeability measurement device having the permeability measurement jig and a permeability measurement method are disclosed.

公开(公告)号：US20180302035A1

公开(公告)日：2018-10-18

申请号：US15569500

申请日：2016-04-27

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Shingo Tamaru ,  Hitoshi Kubota ,  Akio Fukushima ,  Shinji Yuasa

IPC: H03B15/00 ,  H03L7/099 ,  H03L7/093 ,  H01F10/32 ,  H01L43/02

CPC classification number: H03B15/006 ,  H01F10/3259 ,  H01L29/82 ,  H01L43/02 ,  H01L43/08 ,  H01L43/10 ,  H03B15/00 ,  H03L7/093 ,  H03L7/099 ,  H03L7/18

Abstract: The present invention provides a high-frequency phase-locked oscillation circuit having an extremely narrow peak width and a stable frequency so that a high-frequency wave that is oscillated by the MR element solves a problem of a large peak width of oscillation spectrum. The high-frequency phase-locked oscillation circuit is achieved by providing: a magnetoresistive element 6 that oscillates a high-frequency wave with an oscillating frequency fout; a reference signal source 1 that outputs a reference signal with a reference frequency fref; a phase-locked loop circuit having a phase comparator 3, a loop filer 4, and a frequency divider 9; an adder 5 that adds a phase error signal A output from the loop filter and a bias voltage B for oscillating the high-frequency wave from the magnetoresistive element, and that inputs an added bias voltage (A+B) to the magnetoresistive element 6; and a filter 7 provided between the frequency divider 9 and the magnetoresistive element 6 in a region closer to an input side of the frequency divider 9, the filter cutting off the reference frequency fref while allowing the oscillating frequency fout to pass through the filter.