公开(公告)号：US20130313526A1

公开(公告)日：2013-11-28

申请号：US13958339

申请日：2013-08-02

Applicant: D-Wave Systems Inc.

Inventor： Richard G. Harris ,  Andrew J. Berkley ,  Jan Johansson ,  Mark Johnson ,  Mohammad Amin ,  Paul I. Bunyk

IPC: G06N99/00 ,  H01L39/22

CPC classification number: H01L39/223 ,  B82Y10/00 ,  G06N99/002 ,  H01L27/18

Abstract: Apparatus and methods enable active compensation for unwanted discrepancies in the superconducting elements of a quantum processor. A qubit may include a primary compound Josephson junction (CJJ) structure, which may include at least a first secondary CJJ structure to enable compensation for Josephson junction asymmetry in the primary CJJ structure. A qubit may include a series LC-circuit coupled in parallel with a first CJJ structure to provide a tunable capacitance. A qubit control system may include means for tuning inductance of a qubit loop, for instance a tunable coupler inductively coupled to the qubit loop and controlled by a programming interface, or a CJJ structure coupled in series with the qubit loop and controlled by a programming interface.