Superconducting device that mixes surface acoustic waves and microwave signals
View Patent ↗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.
1. A superconducting device, comprising:
a superconducting surface acoustic wave resonator comprising:
a first periodic structure comprising first metallic fingers and first dielectric gaps, and
a second periodic structure comprising second metallic fingers and second dielectric gaps, 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 comprising first metallic fingers and first dielectric gaps, and
a second periodic structure comprising second metallic fingers and second dielectric gaps, 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 comprising first metallic fingers and first dielectric gaps, and
a second periodic structure comprising second metallic fingers and second dielectric gaps, 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.