公开(公告)号：US20230172077A1

公开(公告)日：2023-06-01

申请号：US18160465

申请日：2023-01-27

Applicant: International Business Machines Corporation

Inventor： Aaron Finck ,  John Blair

IPC: H10N60/12 ,  G06N10/00 ,  H10N60/80

CPC classification number: H10N60/12 ,  G06N10/00 ,  H10N60/805

Abstract: Systems and techniques that facilitate mode-selective couplers for frequency collision reduction are provided. In various embodiments, a device can comprise a control qubit. In various aspects, the device can comprise a first target qubit coupled to the control qubit by a first mode-selective coupler. In various instances, the first mode-selective coupler can facilitate A-mode coupling between the control qubit and the first target qubit. In various embodiments, the device can comprise a second target qubit coupled to the control qubit by a second mode-selective coupler. In various aspects, the second mode selective coupler can facilitate B-mode coupling between the control qubit and the second target qubit. In various embodiments, the first mode-selective coupler can comprise a capacitor that capacitively couples a middle capacitor pad of the control qubit to a middle capacitor pad of the first target qubit. In various embodiments, the second mode-selective coupler can comprise a first capacitor that capacitively couples an end capacitor pad of the control qubit to an end capacitor pad of the first target qubit and can comprise a second capacitor that capacitively couples the end capacitor pad of the control qubit to a middle capacitor pad of the second target qubit.

公开(公告)号：US11600658B2

公开(公告)日：2023-03-07

申请号：US16917016

申请日：2020-06-30

Applicant: International Business Machines Corporation

Inventor： Aaron Finck ,  John Blair ,  April Carniol ,  Oliver Dial ,  Muir Kumph

IPC: H01L39/02 ,  H01L27/18 ,  G06N10/00 ,  H01L39/22

Abstract: Devices and/or computer-implemented methods to facilitate ZZ cancellation between qubits are provided. According to an embodiment, a device can comprise a coupler device that operates in a first oscillating mode and a second oscillating mode. The device can further comprise a first superconducting qubit coupled to the coupler device based on a first oscillating mode structure corresponding to the first oscillating mode and based on a second oscillating mode structure corresponding to the second oscillating mode. The device can further comprise a second superconducting qubit coupled to the coupler device based on the first oscillating mode structure and the second oscillating mode structure.