公开(公告)号：US20210143784A1

公开(公告)日：2021-05-13

申请号：US17095658

申请日：2020-11-11

Applicant: IMEC vzw

Inventor： Khaled Khalaf ,  Steven Brebels

IPC: H03G3/00 ,  H03G1/00 ,  H03F1/56 ,  H03F3/72

Abstract: A digitally controlled variable gain amplifier (VGA) for generating amplification output levels is disclosed. In one aspect, the digitally controlled VGA includes a positive amplification stage including at least two positive amplifiers, and a corresponding negative amplification stage coupled to the positive amplification stage. The negative amplification stage includes at least two negative amplifiers. The positive amplification stage and the corresponding negative amplification stage are digitally controlled by one or more digital codes. The corresponding negative amplification stage is coupled in parallel with the positive amplification stage and is equally weighted as the positive amplification stage, and both the positive amplification stage and the corresponding negative amplification stage selectively contribute to the generation of the amplification output levels for the digitally controlled VGA.

公开(公告)号：US20230196166A1

公开(公告)日：2023-06-22

申请号：US18060154

申请日：2022-11-30

Applicant: IMEC VZW

Inventor： Fahd Ayyalil Mohiyaddin ,  Stefan Kubicek ,  Clement Godfrin ,  Bogdan Govoreanu ,  Steven Brebels ,  Ruoyu Li ,  George Eduard Simion

IPC: G06N10/40 ,  G06N10/20 ,  H10N69/00

CPC classification number: G06N10/40 ,  G06N10/20 ,  H10N69/00

Abstract: A qubit device includes first and second linear qubit arrays. Each qubit array includes a semiconductor substrate, control gates configured to define a single row of quantum dots along the substrate, and nanomagnets distributed along the row of quantum dots such that a nanomagnet is arranged at every other pair of quantum dots of the row of quantum dots. Each nanomagnet has an out-of-plane magnetization with respect to the substrate, where the rows of the first and second arrays extend in a common row direction and are separated along a direction transverse to the row direction. The qubit device further includes superconducting resonators connecting pairs of quantum dots between the first and second arrays. Each pair of quantum dots in the first array is configured to couple with a superconducting resonator of the first set to connect with a different pair of quantum dots of the second array.

公开(公告)号：US20210194445A1

公开(公告)日：2021-06-24

申请号：US17128537

申请日：2020-12-21

Applicant: IMEC vzw

Inventor： Khaled Khalaf ,  Steven Brebels

IPC: H03F3/45 ,  H03G3/30

Abstract: A sign switching circuitry is disclosed. In one aspect, the sign switching circuitry includes a first and second differential common-source amplifier having common differential input nodes and common differential output nodes configured such that a differential input signal applied at the common differential input nodes is amplified to a differential output signal at the common differential output nodes with a fixed gain by the first amplifier and by the fixed gain with opposite sign by the second amplifier. The sign switching circuitry also includes a switching circuitry configured to activate the first common-source amplifier and deactivate the second common-source amplifier to amplify the differential input signal by the fixed gain, and to activate the second common-source amplifier and deactivate the first common-source amplifier to amplify the differential input signal by the fixed gain with opposite sign.

公开(公告)号：US11791785B2

公开(公告)日：2023-10-17

申请号：US17128537

申请日：2020-12-21

Applicant: IMEC vzw

Inventor： Khaled Khalaf ,  Steven Brebels

IPC: H03F3/45 ,  H03G3/30

CPC classification number: H03F3/45183 ,  H03G3/3036 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: A sign switching circuitry is disclosed. In one aspect, the sign switching circuitry includes a first and second differential common-source amplifier having common differential input nodes and common differential output nodes configured such that a differential input signal applied at the common differential input nodes is amplified to a differential output signal at the common differential output nodes with a fixed gain by the first amplifier and by the fixed gain with opposite sign by the second amplifier. The sign switching circuitry also includes a switching circuitry configured to activate the first common-source amplifier and deactivate the second common-source amplifier to amplify the differential input signal by the fixed gain, and to activate the second common-source amplifier and deactivate the first common-source amplifier to amplify the differential input signal by the fixed gain with opposite sign.

公开(公告)号：US20230270020A1

公开(公告)日：2023-08-24

申请号：US18055961

申请日：2022-11-16

Applicant: IMEC VZW

Inventor： Vadiraj Manjunath Ananthapadmanabha Rao ,  Steven Van Winckel ,  Steven Brebels

IPC: H10N60/81

CPC classification number: H10N60/81

Abstract: A package includes a metal plate and a carrier substrate mounted on the top surface thereof, which includes one or more superconducting chips mounted on the carrier substrate or configured to receive the one or more chips mounted thereon. The carrier substrate and the plate are sandwiched between the planar portions of a first and second magnetic shield structure, at least the first structure including a planar portion and a receptacle-shaped shell portion arranged above and around the chip location. The package includes one or more pillars formed of a magnetic shielding material which are clamped between the planar portions of the shield structures, wherein the one or more pillars are penetrating the carrier substrate and the metal support plate, and wherein the one or more pillars are in physical contact with both of the planar portions.

公开(公告)号：US12204996B2

公开(公告)日：2025-01-21

申请号：US17645209

申请日：2021-12-20

Applicant: IMEC vzw

Inventor： Fahd Ayyalil Mohiyaddin ,  Ruoyu Li ,  Bogdan Govoreanu ,  Steven Brebels

IPC: G06N10/40

Abstract: An integrated system for quantum computation is provided, In one aspect, the system includes at least one semiconductor spin quantum bit (qubit); a feedline configured to act as an electron spin resonance (ESR) antenna for control of the at least one qubit; at least one resonator; and a ground plane common to both the feedline and the at least one resonator. The at least one resonator is capacitively coupled to the feedline, and configured for readout of the at least one qubit via the feedline. The feedline and the at least one resonator are arranged in adjacent layers separated by at least a dielectric. A corresponding method of performing quantum computation using such an integrated system is also provided.

公开(公告)号：US11621685B2

公开(公告)日：2023-04-04

申请号：US17095658

申请日：2020-11-11

Applicant: IMEC vzw

Inventor： Khaled Khalaf ,  Steven Brebels

IPC: H03G3/00 ,  H03F1/56 ,  H03F3/72 ,  H03G1/00

Abstract: A digitally controlled variable gain amplifier (VGA) for generating amplification output levels is disclosed. In one aspect, the digitally controlled VGA includes a positive amplification stage including at least two positive amplifiers, and a corresponding negative amplification stage coupled to the positive amplification stage. The negative amplification stage includes at least two negative amplifiers. The positive amplification stage and the corresponding negative amplification stage are digitally controlled by one or more digital codes. The corresponding negative amplification stage is coupled in parallel with the positive amplification stage and is equally weighted as the positive amplification stage, and both the positive amplification stage and the corresponding negative amplification stage selectively contribute to the generation of the amplification output levels for the digitally controlled VGA.