US 12,212,295 B2 · Nonlinear microwave filter

Abstract

This nonlinear microwave filter is provided with quantum bits that are formed on a circuit board in which target quantum bits are formed which are quantum bits controlled in a superconducting quantum circuit, and that are coupled to a control waveguide to which the target quantum bits are coupled, wherein the distance to a waveguide end in the control waveguide is within a predetermined range from semi integer times the resonant wavelength, the quantum bits have a resonant frequency in which the difference from the resonant frequency of the target quantum bits is within a predetermined range, and the coupling to the control waveguide is stronger by a predetermined value than the coupling between the target quantum bits and the control waveguide.

Claims5

Dependent claims

A nonlinear microwave filter, comprising:

a qubit that is formed on a circuit substrate on which a target qubit, which is a qubit to be controlled by a microwave in a superconducting quantum circuit is formed, and that is coupled to a control waveguide to which the target qubit is coupled, wherein
a distance from the qubit to a waveguide end of the control waveguide is within a range of 0.35+n/2 to 0.65+n/2 times a resonance wavelength of the target qubit wherein n is an integer,
the qubit has a resonant frequency the deviation of which from the resonant frequency of the target qubit is within a predetermined range, and
a coupling between the qubit and the control waveguide is stronger by a predetermined value than a coupling between the target qubit and the control waveguide.

1 more element

Dependencies are inferred from the claim text.

Nonlinear microwave filter

Life of this patent

Nonlinear microwave filter

Life of this patent

Abstract

Claims5