All-semiconductor Josephson junction device for qubit applications
AssigneeInternational Business Machines Corporation
InventorsSteven J. Holmes, Devendra K. Sadana, Oleg Gluschenkov
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Abstract
According to an embodiment of the present invention, a quantum mechanical device includes a monolithic crystalline structure. The monolithic crystalline structure includes a first region doped to provide a first superconducting region, and a second region doped to provide a second superconducting region, the second superconducting region being separated from the first superconducting region by an undoped crystalline region. The first and second superconducting regions and the undoped crystalline region form a Josephson junction.
Claims20
A quantum mechanical device, comprising:
- a monolithic crystalline structure, said monolithic crystalline structure comprising:
- a first region doped to provide a first superconducting region;
- and
- a second region doped to provide a second superconducting region, said second superconducting region being separated from said first superconducting region by an undoped crystalline region,
- wherein said first and second superconducting regions and said undoped crystalline region form a Josephson junction.
A quantum mechanical device, comprising:
- a monolithic crystalline structure, said monolithic crystalline structure comprising:
- a first region doped to provide a first superconducting region;
- and
- a second region doped to provide a second superconducting region;
- and
- a third region doped to provide a metal region, said second superconducting region being separated from said first superconducting region by said metal region,
- wherein said first and second superconducting regions and said metal region form a Josephson junction.
A method of producing a quantum mechanical device, comprising:
- providing a crystalline substrate;
- and
- doping first and second regions of said crystalline substrate to form first and second superconducting regions while reserving a region between said first and second superconducting regions as an undoped crystalline region,
- wherein said first and second superconducting regions and said undoped crystalline region form a Josephson junction.
Dependencies are inferred from the claim text.