Solid state charge qubit device
First Claim
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1. A quantum device, comprising:
- an electrically inert solid semiconductor substrate within which there is;
a charge qubit comprising a pair of dopant atoms having a net charge and an electric field having two potential wells, wherein the two potential wells are located adjacent respective dopant atoms;
and wherein a location of the net charge in the electric field having two potential wells defines a logical state of the charge qubit;
and wherein a first gate is located over a potential barrier between the two potential wells to control a barrier height; and
at least one second gate is located to control relative shapes and sizes of the two potential wells, wherein the semiconductor substrate and the dopant atoms are selected to create a system equivalent to an artificial H2+ molecule.
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Abstract
This invention concerns a quantum device, suitable for quantum computing, based on dopant atoms located in a solid semiconductor or insulator substrate. In further aspects the device is scaled up. The invention also concerns methods of reading out from the devices, initializing them, using them to perform logic operations and making them.
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17 Claims
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1. A quantum device, comprising:
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an electrically inert solid semiconductor substrate within which there is; a charge qubit comprising a pair of dopant atoms having a net charge and an electric field having two potential wells, wherein the two potential wells are located adjacent respective dopant atoms; and wherein a location of the net charge in the electric field having two potential wells defines a logical state of the charge qubit; and wherein a first gate is located over a potential barrier between the two potential wells to control a barrier height; and at least one second gate is located to control relative shapes and sizes of the two potential wells, wherein the semiconductor substrate and the dopant atoms are selected to create a system equivalent to an artificial H2+ molecule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification