公开(公告)号：IL286615D0

公开(公告)日：2021-10-31

申请号：IL28661521

申请日：2021-09-22

Applicant: IBM ,  ADIGA VIVEKANANDA ,  SANDBERG MARTIN ,  CHOW JERRY ,  PAIK HANHEE

Inventor： ADIGA VIVEKANANDA ,  SANDBERG MARTIN ,  CHOW JERRY ,  PAIK HANHEE

IPC: G06N10/00 ,  H01L27/18 ,  H01L39/02 ,  H01L39/12 ,  H01L39/22 ,  H01L39/24

Abstract: A qubit includes a substrate, and a first capacitor structure having a lower portion formed on a surface of the substrate and at least one first raised portion extending above the surface of the substrate. The qubit further includes a second capacitor structure having a lower portion formed on the surface of the substrate and at least one second raised portion extending above the surface of the substrate. The first capacitor structure and the second capacitor structure are formed of a superconducting material. The qubit further includes a junction between the first capacitor structure and the second capacitor structure. The junction is disposed at a predetermined distance from the surface of the substrate and has a first end in contact with the first raised portion and a second end in contact with the second raised portion.

公开(公告)号：IL286610D0

公开(公告)日：2021-10-31

申请号：IL28661021

申请日：2021-09-22

Applicant: IBM ,  SANDBERG MARTIN ,  ADIGA VIVEKANANDA ,  TOPALOGLU RASIT ONUR

Inventor： SANDBERG MARTIN ,  ADIGA VIVEKANANDA ,  TOPALOGLU RASIT ONUR

IPC: B82Y10/00 ,  G06N10/00 ,  H01L27/18 ,  H01L39/02 ,  H01L39/22 ,  H01L39/24

Abstract: A fluxonium qubit includes a superinductor. The superinductor includes a substrate, and a first vertical stack extending in a vertical direction from a surface of the substrate. The first vertical stack includes a first Josephson junction and a second Josephson junction connected in series along the vertical direction. The superinductor includes a second vertical stack extending in a vertical direction from a surface of the substrate. The second vertical stack includes a third Josephson junction. The superinductor includes a superconducting connector connecting the first and second vertical stacks in series such that the first, second, and third Josephson junctions are connected in series. The fluxonium qubit further includes a shunted Josephson junction connected to the superinductor with superconducting wires such that the first, second, and third Josephson junctions of the superinductor that are in series are connected in parallel with the shunted Josephson junction.