Japan Science and Technology Agency

Kabushiki Kaisha Toshiba

Yutaka Tabuchi

Yasunobu Nakamura

Shuhei Tamate

Kazuto Sakai

A superconducting complex quantum computing circuit includes a circuit substrate in which a wiring pattern of a circuit element including quantum bits and measurement electrodes, and ground patterns are formed, and through-electrodes connecting the ground pattern formed on a first surface of the substrate surface and the ground pattern formed on a second surface; a first ground electrode including a first contact portion in contact with the ground patterns, and a first non-contact portion having a shape corresponding to a shape of the wiring pattern; a second ground electrode including a second contact portion in contact with the ground pattern; a control signal line provided with a contact spring pin at a tip; and a pressing member that presses the first ground electrode against the first surface of the circuit substrate or presses the second ground electrode against the second surface of the circuit substrate.

Superconducting complex quantum computing circuit

A permanent magnet type rotating machine includes a stator core provided on an inner periphery thereof with armature windings, a rotor core, a plurality of permanent magnets arranged on an outer periphery of the rotor core, and a magnetic ring arranged between the permanent magnets and a stator. The magnetic flux running from the permanent magnets to the stator core through a gap, can be increased by a reduction in magnetic reluctance due to the magnetic ring inserted between the gap and the permanent magnets. The magnetic ring is fitted on either one of the outer peripheries of the permanent magnets and the inner periphery of the stator core.

Growing community of inventors

Wako, Japan

Yutaka Tabuchi