Enhancing qubit-qubit interactions between separate chips with spiral resonators
AssigneeInternational Business Machines Corporation
InventorsAaron Finck, Cihan Kurter
Life of this patent
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Abstract
Various systems and methods are presented regarding utilizing a spiral resonator to enhance coupling between a first inductor loop and a second inductor loop to enable coupling between a first qubit and a second qubit. Operation of the first inductor loop can be controlled by a flux-tunable TCQ coupler, wherein flux-tuning can adjust operation from an OFF state (no coupling between the first qubit and the second qubit) to an ON state (the first qubit and second qubit are coupled). The spiral resonator can be located at the center of, and in the same plane as the loop of the first inductor loop. The spiral resonator can enhance inductive coupling between the first loop inductor and the second loop inductor.
Claims20
A system, comprising:
- a first substrate having located thereon:
- a first quantum bit (qubit) located in a first quantum array connected to a first inductor loop coupled to a spiral resonator;
- and
- a second substrate, having located thereon:
- a second qubit located in a second quantum array connected to a second inductor loop, wherein the first substrate and second substrate are separate, and the first qubit and the second qubit are coupled via electrical interaction between the first inductor loop and the second inductor loop, wherein the spiral resonator enhances coupling between the first and second qubits.
A quantum computing system, comprising:
- at least one processor;
- and
- a memory operatively coupled to the at least one processor and having instructions stored thereon, wherein, in response to the at least one processor, the instructions facilitate performance of operations, comprising:
- controlling operation of a flux-tunable coupler to couple a first qubit with a second qubit, the first qubit is connected to a first inductor loop and the second qubit is coupled to a second inductor loop, wherein the second inductor loop is proximate to the first inductor loop, and a spiral resonator is located proximate to the first inductor loop, wherein the first qubit is coupled to the second qubit via the first inductor loop and the second inductor loop, wherein the spiral resonator enhances coupling between the first and second qubits.
A computer-implemented method, comprising employing a processor and memory to instruct computer executable components to perform the following acts:
- controlling operation of a flux-tunable coupler to couple a first qubit with a second qubit, the first qubit is connected to a first inductor loop and the second qubit is coupled to a second inductor loop, wherein the second inductor loop is proximate to the first inductor loop, and a spiral resonator is located proximate to the first inductor loop, wherein the first qubit is coupled to the second qubit via the first inductor loop and the second inductor loop, wherein the spiral resonator enhanced coupling between the first and second qubits.
Dependencies are inferred from the claim text.