Superconducting device that mixes surface acoustic waves and microwave signals

Patent metadata

Field	Value
Publication number	US-11728772-B2
Application number	US-202117224702-A
Country	US
Kind code	B2
Filing date	Apr 7, 2021
Priority date	Jul 30, 2018
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A superconducting device that mixes surface acoustic waves and microwave signals and techniques for fabricating the same are provided. A superconducting device can comprise a superconducting surface acoustic wave resonator and a superconducting microwave resonator. The superconducting device can also comprise a Josephson ring modulator coupled to the superconducting surface acoustic wave resonator and the superconducting microwave resonator. The Josephson ring modulator can be a dispersive nonlinear three-wave mixing element.

First claim

What is claimed is:

1. A superconducting device, comprising:
a superconducting surface acoustic wave resonator comprising:
a first periodic structure; and
a second periodic structure comprising metallic fingers, wherein the first periodic structure and the second periodic structure are separated by a distance defined as an odd integer multiple of a half-wavelength supported by the superconducting surface acoustic wave resonator.

2. The superconducting device of claim 1 , wherein the second periodic structure further comprises a dispersive nonlinear three-wave mixing element coupled to the superconducting surface acoustic wave resonator.

3. The superconducting device of claim 2 , wherein the dispersive nonlinear three-wave mixing element comprises one or more Josephson junctions.

4. The superconducting device of claim 3 , wherein the one or more Josephson junctions are arranged in a Wheatstone-bridge configuration.

5. The superconducting device of claim 3 , further comprising:
a superconducting microwave resonator coupled to the dispersive nonlinear three-wave mixing element.

6. The superconducting device of claim 2 , further comprising:
an interdigitated capacitance device positioned at a center of the superconducting surface acoustic wave resonator.

7. The superconducting device of claim 6 , wherein a first set of opposite nodes of the dispersive nonlinear three-wave mixing element are connected to opposite nodes of the interdigitated capacitance device.

8. The superconducting device of claim 7 , wherein a second set of opposite nodes of the dispersive nonlinear three-wave mixing element are connected to a shunt capacitor.

9. The superconducting device of claim 8 , wherein the interdigitated capacitance device, the shunt capacitor, and the dispersive nonlinear three-wave mixing element, and the one or more Josephson junctions form a superconducting microwave resonator.

10. The superconducting device of claim 2 , wherein induced magnetic flux threads the dispersive nonlinear three-wave mixing element.

11. A superconducting device, comprising:
a superconducting surface acoustic wave resonator comprising:
a first periodic structure; and
a second periodic structure comprising metallic fingers, wherein the first periodic structure and the second periodic structure are separated by a distance defined as an odd integer multiple of a half-wavelength supported by the superconducting surface acoustic wave resonator; and

a Josephson ring modulator coupled to the superconducting surface acoustic wave resonator.

12. The superconducting device of claim 11 , wherein the Josephson ring modulator comprises one or more Josephson junctions arranged in a Wheatstone-bridge configuration.

13. The superconducting device of claim 12 , further comprising:
a superconducting microwave resonator coupled to the Josephson ring modulator.

14. The superconducting device of claim 13 , wherein the Josephson ring modulator is a dispersive nonlinear three-wave mixing element.

15. The superconducting device of claim 11 , further comprising:
an interdigitated capacitance device positioned at a center of the superconducting surface acoustic wave resonator.

16. The superconducting device of claim 15 , wherein a first set of opposite nodes of the Josephson ring modulator are connected to opposite nodes of an interdigitated capacitance device.

17. A superconducting device, comprising:
a superconducting surface acoustic wave resonator comprising:
a first periodic structure; and
a second periodic structure comprising metallic fingers, wherein the first periodic structure and the second periodic structure are separated by a defined multiple of a half-wavelength supported by the superconducting surface acoustic wave resonator.

18. The superconducting device of claim 17 , wherein the second periodic structure further comprises a dispersive nonlinear three-wave mixing element coupled to the superconducting surface acoustic wave resonator, and wherein the dispersive nonlinear three-wave mixing element comprises one or more Josephson junctions.

19. The superconducting device of claim 17 , wherein the one or more Josephson junctions are arranged in a Wheatstone-bridge configuration.

20. The superconducting device of claim 17 , further comprising:
an interdigitated capacitance device positioned at a center of the superconducting surface acoustic wave resonator, wherein a first set of opposite nodes of the dispersive nonlinear three-wave mixing element are connected to opposite nodes of the interdigitated capacitance device.

Assignees

• IBM

Inventors

• Abdo Baleegh

Classifications

• H03D7/005 Primary

  by means of superconductive devices · CPC title

• G06N10/00

  Quantum computing, i.e. information processing based on quantum-mechanical phenomena · CPC title

• H03F19/00

  Amplifiers using superconductivity effects · CPC title

• H03H3/08

  for the manufacture of resonators or networks using surface acoustic waves · CPC title

• H03H9/02637

  Details concerning reflective or coupling arrays · CPC title