US 12,118,433 B2
Space-saving coupler arm arrangement for superconducting qubits
Srikanth Srinivasan, Mount Kisco, NY (US); George Andrew Keefe, Cortlandt Manor, NY (US); David C. Mckay, Ossining, NY (US); Xuan Wei, White Plains, NY (US); and Abhinav Kandala, Yorktown Heights, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Dec. 15, 2021, as Appl. No. 17/552,018.
Prior Publication US 2023/0186134 A1, Jun. 15, 2023
Int. Cl. G06N 10/40 (2022.01); H10N 60/80 (2023.01)
CPC G06N 10/40 (2022.01) [H10N 60/805 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a first superconducting qubit capacitively coupled to a group of coupler arms, wherein a first pair of coupler arms of the group of couplers that are capacitively coupled to a second superconducting qubit are separated by a first defined distance selected to cause a first defined parasitic capacitance between a first coupler arm and a second coupler arm of the first pair of coupler arms that is within a first defined order of magnitude of a first defined capacitance between the first superconducting qubit and a first coupler arm of the first pair of coupler arms, wherein a second defined capacitance between the first superconducting qubit and a second coupler arm of the first pair of coupler arms is greater than the first defined capacitance, and wherein the first defined capacitance is selected to cause the first superconducting qubit to exhibit a defined quantum electrical behavior in response to presence of the first defined parasitic capacitance.