公开(公告)号：GB2573961B

公开(公告)日：2022-01-12

申请号：GB201912328

申请日：2017-12-05

Applicant: IBM

Inventor： LEV SAMUEL BISHOP ,  JAY GAMBETTA ,  HANHEE PAIK

IPC: G06N10/00 ,  H04B10/70

Abstract: A technique relates to communication of a quantum state. Polarization hardware is configured to receive a polarization encoded qubit and split the polarization encoded qubit into two qubits. A converter is coupled to the polarization hardware, and the converter is configured to convert the two qubits into a form suitable for a CNOT gate. The CNOT gate is configured to receive the two qubits such that a measurement result of a CNOT operation of the CNOT gate determines success of the communication of the quantum state.

公开(公告)号：GB2573961A

公开(公告)日：2019-11-20

申请号：GB201912328

申请日：2017-12-05

Applicant: IBM

Inventor： LEV SAMUEL BISHOP ,  JAY GAMBETTA ,  HANHEE PAIK

IPC: G06F1/00

Abstract: A technique relates to communication of a quantum state. Polarization hardware is configured to receive a polarization encoded qubit and split the polarization encoded qubit into two qubits. Aconverter is coupled to the polarization hardware, and the converter is configured to convert the two qubits into a form suitable for a CNOT gate. The CNOT gate is configured to receive the two qubits such that a measurement result of a CNOT operation of the CNOT gate determines success of the communication of the quantum state.

公开(公告)号：GB2582085B

公开(公告)日：2022-05-11

申请号：GB202007413

申请日：2017-12-21

Applicant: IBM

Inventor： MARTIN SANDBERG ,  DAVID MCKAY ,  PATRYK GUMANN ,  HANHEE PAIK ,  JAY GAMBETTA

IPC: G06N99/00 ,  H01L23/485

Abstract: Embodiments of the present invention disclose a computer system having a plurality of quantum circuits arranged in a two-dimensional plane-like structure, the quantum circuits comprising qubits and busses (i.e., qubit-qubit interconnects), and a method of formation therefor. A quantum computer system comprises a plurality of quantum circuits arranged in a two-dimensional pattern. At least one interior quantum circuit, not along the perimeter of the two-dimensional plane of the plurality of quantum circuits, contains a bottom chip, a device layer, a top chip, and a routing layer. A signal wire connects the device layer to the routing layer, wherein the signal wire breaks the two dimensional plane, for example, the signal wire extends into a different plane.

公开(公告)号：IL298205B1

公开(公告)日：2025-05-01

申请号：IL29820522

申请日：2022-11-14

Applicant: IBM CORP ,  DOUGLAS MAX GILL ,  MARTIN O SANDBERG ,  VIVEKANANDA P ADIGA ,  YVES MARTIN ,  HANHEE PAIK

Inventor： DOUGLAS MAX GILL ,  MARTIN O SANDBERG ,  VIVEKANANDA P ADIGA ,  YVES MARTIN ,  HANHEE PAIK

IPC: B82Y10/00 ,  G06N10/40 ,  H10N60/01 ,  H10N60/12 ,  H10N60/80 ,  H10N60/81 ,  H10N60/85 ,  H10N69/00

Abstract: A method for improving lifetime and coherence time of a qubit in a quantum mechanical device is provided. The method includes providing a substrate having a frontside and a backside, the frontside having at least one qubit formed thereon, the at least one qubit having capacitor pads. The method further includes at least one of removing an amount of substrate material from the backside of the substrate at an area opposite the at least one qubit or depositing a superconducting metal layer at the backside of the substrate at the area opposite the at least one qubit to reduce radiofrequency electrical current loss due to at least one of silicon-air (SA) interface, metal-air (MA) interface or silicon-metal (SM) interface so as to enhance a lifetime (T1) and a coherence time (T2) in the at least one qubit.

公开(公告)号：IL298205A

公开(公告)日：2023-01-01

申请号：IL29820522

申请日：2022-11-14

Applicant: IBM CORP ,  DOUGLAS MAX GILL ,  MARTIN O SANDBERG ,  VIVEKANANDA P ADIGA ,  YVES MARTIN ,  HANHEE PAIK

Inventor： DOUGLAS MAX GILL ,  MARTIN O SANDBERG ,  VIVEKANANDA P ADIGA ,  YVES MARTIN ,  HANHEE PAIK

IPC: G06N10/40

Abstract: A method for improving lifetime and coherence time of a qubit in a quantum mechanical device is provided. The method includes providing a substrate having a frontside and a backside, the frontside having at least one qubit formed thereon, the at least one qubit having capacitor pads. The method further includes at least one of removing an amount of substrate material from the backside of the substrate at an area opposite the at least one qubit or depositing a superconducting metal layer at the backside of the substrate at the area opposite the at least one qubit to reduce radiofrequency electrical current loss due to at least one of silicon-air (SA) interface, metal-air (MA) interface or silicon-metal (SM) interface so as to enhance a lifetime (T1) and a coherence time (T2) in the at least one qubit.

公开(公告)号：GB2567080B

公开(公告)日：2021-04-14

申请号：GB201900518

申请日：2017-06-20

Applicant: IBM

Inventor： HANHEE PAIK ,  JASON SCOTT ORCUTT ,  LEV SAMUEL BISHOP ,  JAY GAMBETTA ,  JAMES ROZEN

IPC: G06N10/00

Abstract: Techniques relate to reading a qubit coupled to a microwave resonator. A microwave signal at a microwave resonator frequency is input to the microwave resonator that couples to the qubit. A microwave readout signal from the microwave resonator is output to a microwave to optical converter. The microwave readout signal includes a qubit state of the qubit. The microwave to optical converter is configured to convert the microwave readout signal to an optical signal. In response to the optical signal being output by the microwave to optical converter, it is determined that the qubit is in a predefined qubit state. In response to no optical signal being output by the microwave to optical converter, it is determined that the qubit is not in the predefined qubit state.

公开(公告)号：GB2562979A

公开(公告)日：2018-11-28

申请号：GB201814344

申请日：2017-01-13

Applicant: IBM

Inventor： HANHEE PAIK ,  STEFAN FILIPP ,  LEV SAMUEL BISHOP ,  JAY GAMBETTA ,  JASON SCOTT ORCUTT

IPC: H01L39/02 ,  B82Y10/00 ,  B82Y20/00 ,  G02B6/293 ,  G02F1/01 ,  G02F1/03 ,  G06N99/00 ,  H01L27/18 ,  H01P7/06 ,  H01P7/08 ,  H01S3/08

Abstract: Transducers and methods of making the same include a substrate having a cavity with a diameter that supports whispering gallery modes at a frequency of an input signal. A focusing structure in the cavity focuses the electric field of the input signal. A resonator directly under the focusing structure has a crystalline structure that generates an electro-optic effect when exposed to electrical fields. An electric field of the input signal modulates an output signal in the resonator via the electro-optic effect.

公开(公告)号：GB2557828A

公开(公告)日：2018-06-27

申请号：GB201805766

申请日：2016-07-12

Applicant: IBM

Inventor： BALEEGH ABDO ,  JAY GAMBETTA ,  JERRY MOY CHOW ,  HANHEE PAIK

IPC: H01L39/22 ,  B82Y10/00 ,  G06N99/00

Abstract: A technique relates to a microwave device (300). A qubit (310) is connected to a first end of a first coupling capacitor (320A) and a first end of a second coupling capacitor (320B). A resonator (305) is connected to a second end of the first coupling capacitor (320A) and a second end of the second coupling capacitor (320B). The resonator (305) includes a fundamental resonance mode. A filter (315) is connected to both the qubit (310) and the first end of the first or second coupling capacitor (320A, 320B).

公开(公告)号：GB2582085A

公开(公告)日：2020-09-09

申请号：GB202007413

申请日：2017-12-21

Applicant: IBM

Inventor： MARTIN SANDBERG ,  DAVID MCKAY ,  PATRYK GUMANN ,  HANHEE PAIK ,  JAY GAMBETTA

IPC: G06N99/00 ,  H01L23/485

Abstract: Embodiments of the present invention disclose a computer system having a plurality of quantum circuits arranged in a two-dimensional plane-like structure, the quantum circuits comprising qubits and busses (i.e., qubit-qubit interconnects), and a method of formation therefor. A quantum computer system comprises a plurality of quantum circuits arranged in a two-dimensional pattern. At least one interior quantum circuit, not along the perimeter of the two-dimensional plane of the plurality of quantum circuits, contains a bottom chip, a device layer, a top chip, and a routing layer. A signal wire connects the device layer to the routing layer, wherein the signal wire breaks the two dimensional plane, for example, the signal wire extends into a different plane.

公开(公告)号：GB2562979B

公开(公告)日：2019-04-17

申请号：GB201814344

申请日：2017-01-13

Applicant: IBM

Inventor： HANHEE PAIK ,  STEFAN FILIPP ,  LEV SAMUEL BISHOP ,  JAY GAMBETTA ,  JASON SCOTT ORCUTT

IPC: H01L39/02 ,  B82Y10/00 ,  B82Y20/00 ,  G02B6/293 ,  G02F1/01 ,  G02F1/03 ,  G06N10/00 ,  H01L27/18 ,  H01P7/06 ,  H01P7/08 ,  H01S3/08

Abstract: Transducers and methods of making the same include a substrate having a cavity with a diameter that supports whispering gallery modes at a frequency of an input signal. A focusing structure in the cavity focuses the electric field of the input signal. A resonator directly under the focusing structure has a crystalline structure that generates an electro-optic effect when exposed to electrical fields. An electric field of the input signal modulates an output signal in the resonator via the electro-optic effect.