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Patent US10790807
Issued 2020-09-29
Quantum Logic Gate Design And Optimization
A method of performing a computational process using a quantum computer includes generating a laser pulse sequence comprising a plurality of laser pulse segments used to perform an entangling gate operation on a first trapped ion and a second trapped ion of a plurality of trapped ions that are aligned in a first direction, each of the trapped ions having two frequency-separated states defining a qubit, and applying the generated laser pulse sequence to the first and second trapped ions. Each of the plurality of laser pulse segments has a pulse shape with ramps formed using a spline at a start and an end of each of the plurality of laser pulse segments.
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- 1. A method of performing a computational process using a quantum computer, comprising:
generating a laser pulse sequence comprising a plurality of laser pulse segments used to perform an entangling gate operation on a first trapped ion and a second trapped ion of a plurality of trapped ions that are aligned in a first direction, each of the trapped ions having two frequency-separated states defining a qubit; and applying the generated laser pulse sequence to the first and second trapped ions, wherein each of the plurality of laser pulse segments has a pulse shape with ramps formed using a spline at a start and an end of each of the plurality of laser pulse segments.
- 9. A non-transitory computer-readable medium including computer program instructions, which when executed by a processor, cause the processor to:
generate a laser pulse sequence comprising a plurality of laser pulse segments used to perform an entangling gate operation on a first trapped ion and a second trapped ion of a plurality of trapped ions that are aligned in a first direction, each of the trapped ions having two frequency-separated states; and apply the generated laser pulse sequence to the first and second trapped ions, wherein each of the plurality of laser pulse segments has a pulse shape with ramps formed using a spline at a start and an end of each of the plurality of laser pulse segments.
- 17. A quantum computing system, comprising:
a plurality of trapped ions that are aligned in a first direction, each of the trapped ions having two hyperfine states defining a qubit; one or more lasers configured to emit a laser beam that is split into a pair of non-copropagating laser beams having a first frequency and a second frequency that is provided to a first trapped ion and a second trapped ion of the plurality of trapped ions, wherein the pair of non-copropagating laser beams are configured to cause Rabi flopping of the first trapped ion and the second trapped ion between each of the two hyperfine states and the excited state, and a controller configured to:
generate a laser pulse sequence comprising a plurality of laser pulse segments used to perform an entangling gate operation on the first trapped ion and the second trapped ion; and
apply the generated laser pulse sequence to the first and second trapped ions, and
each of the plurality of laser pulse segments has a pulse shape with ramps formed using a spline at a start and an end of each of the plurality of laser pulse segments.
