Quantum device and method with tunable resonant frequency
AssigneeSamsung Electronics Co., Ltd.
InventorDaeyun KIM
Life of this patent
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Abstract
A quantum device including a ferromagnetic link having a ferromagnetic material, a first superconducting layer, and a second superconducting layer configured to be coupled with the first superconducting layer by the ferromagnetic link, the quantum device being configured to have a resonant frequency that is tunable based on a position of a domain wall of the ferromagnetic link, and, to reproduce a predetermined resonant frequency of the quantum device, the ferromagnetic link includes a marking point corresponding to the predetermined resonant frequency.
Claims20
A quantum device, the quantum device comprising:
- a ferromagnetic link comprising a ferromagnetic material;
- a first superconducting layer;
- and
- a second superconducting layer configured to be coupled with the first superconducting layer by the ferromagnetic link,
- wherein the quantum device is configured to have a resonant frequency that is tunable based on a position of a domain wall of the ferromagnetic link, and
- wherein, to reproduce a predetermined resonant frequency of the quantum device, the ferromagnetic link comprises a marking point corresponding to the predetermined resonant frequency.
A method, the method comprising:
- coupling qubits by applying a first external magnetic field to a qubit coupler to position a domain wall of a ferromagnetic link at a marking point to configure the qubit coupler to have a predetermined resonant frequency, wherein the qubit coupler comprises:
- the ferromagnetic link including the marking point defined therein, the marking point corresponding to the predetermined resonant frequency;
- a first superconducting layer;
- and
- a second superconducting layer coupled to the first superconducting layer by the ferromagnetic link;
- and
- decoupling the qubits by applying a second external magnetic field to the qubit coupler to position the domain wall of the ferromagnetic link at a location other than the marking point to configure the qubit coupler to not have the predetermined resonant frequency.
A method, the method comprising:
- coupling qubits by applying a first external magnetic field to a qubit coupler to position a domain wall of a ferromagnetic link at a first marking point to configure the qubit coupler to have a predetermined first resonant frequency, wherein the qubit coupler comprises:
- the ferromagnetic link including the first marking point and a second marking point defined therein, the first marking point corresponding to the predetermined first resonant frequency and the second marking point corresponding to a predetermined second resonant frequency;
- a first superconducting layer;
- and
- a second superconducting layer coupled to the first superconducting layer by the ferromagnetic link;
- and
- decoupling the qubits by applying a second external magnetic field to the qubit coupler to position the domain wall of the ferromagnetic link at the second marking point to configure the qubit coupler to have the predetermined second resonant frequency.
Dependencies are inferred from the claim text.