Superconducting vortex-based microwave circulator
A circulator includes a central circuit having a first superconducting island, a second superconducting island, a third superconducting island, and a central island, each in electrical communication with each other via a plurality of Josephson junctions.
1. A method for using a circulator, the method comprising:
operating a circulator in a non-charge-conserved, intermediate regime of Josephson energy,
wherein the circulator includes a central circuit including:
a first superconducting island, a second superconducting island, a third superconducting island, and a central island, each in electrical communication with each other via a plurality of Josephson junctions.
2. The method of claim 1 , wherein the central circuit defines a plane.
3. The method of claim 2 , further comprising threading the central circuit by an external magnetic field applied perpendicular to the plane.
4. The method of claim 1 , wherein the plurality of Josephson junctions include a Josephson energy and a capacitance.
5. The method of claim 1 , wherein the central island includes a central ground.
6. The method of claim 1 , wherein the central island includes a self-capacitance.
7. The method of claim 1 , further comprising capacitively coupling a resonator to each of the first, the second, and the third superconducting islands.
8. The method of claim 7 , further comprising: strongly coupling to each of the first, the second, and the third superconducting islands.
9. The method of claim 1 , further comprising generating persistent current vortexes.
10. A method for operating a circulator, the method comprising:
operating a circulator in a non-charge-conserved, intermediate regime of Josephson energy, wherein the circulator includes:
a plurality of superconducting islands; and
a central island,
wherein the plurality of superconducting islands and the central island are each in electrical communication with each other via a plurality of Josephson junctions.
11. The method of claim 10 , wherein the plurality of superconducting islands define a plane.
12. The method of claim 11 , further comprising threading the circulator by an external magnetic field applied perpendicular to the plane.
13. The method of claim 10 , wherein the plurality of Josephson junctions include a Josephson energy and a capacitance.
14. The method of claim 10 , wherein the central island includes a central ground.
15. The method of claim 10 , wherein the central island includes a self-capacitance.
16. The method of claim 10 , further comprising capacitively coupling a resonator to each of the plurality of superconducting islands.
17. The method of claim 16 , further comprising strongly coupling the resonators to each of the plurality of superconducting islands.
18. A method for using a circulator in a computing system, the method comprising:
operating one or more computing devices in communication with a quantum computing system including a circulator, wherein the circulator comprises:
a first superconducting island, a second superconducting island, a third superconducting island, and a central island, each in electrical communication with each other via a plurality of Josephson junctions; and
operating the circulator in a non-charge-conserved, intermediate regime of Josephson energy.