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Application US20200372391
Published 2020-11-26
Stabilization Of Entangling Gates For Trapped-ion Quantum Computers
A method of performing a computation using a quantum computer includes generating a first laser pulse and a second laser pulse to cause entanglement interaction between 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 plurality of trapped ions having two frequency-separated states defining a qubit, and applying the generated first laser pulse to the first trapped ion and the generated second laser pulse to the second trapped ion. Generating the first laser pulse and the second laser pulse includes stabilizing the entanglement interaction between the first and second trapped ions against fluctuations in frequencies of collective motional modes of the plurality of trapped ions in a second direction that is perpendicular to the first direction.
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- 1. A method of performing a computation using a quantum computer, comprising:
generating a first laser pulse and a second laser pulse to cause entanglement interaction between 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 plurality of trapped ions having two frequency-separated states defining a qubit, wherein generating the first laser pulse and the second laser pulse comprises:
stabilizing the entanglement interaction between the first and second trapped ions against fluctuations in frequencies of collective motional modes of the plurality of trapped ions in a second direction that is perpendicular to the first direction; and
applying the generated first laser pulse to the first trapped ion and the generated second laser pulse to the second trapped ion.
- 9. A non-transitory computer-readable medium including computer program instructions, which when executed by a processor, cause the processor to:
generate a first laser pulse and a second laser pulse to cause entanglement interaction between 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 plurality of trapped ions having two frequency-separated states defining a qubit, wherein generating the first laser pulse and the second laser pulse comprises:
stabilizing the entanglement interaction between the first and second trapped ions against fluctuations in frequencies of collective motional modes of the plurality of trapped ions in a second direction that is perpendicular to the first direction; and
apply the generated first laser pulse to the first trapped ion and the generated second laser pulse to the second trapped ion.
- 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; and a controller comprising non-volatile memory having a number of instructions stored therein which, when executed by a processor, causes the quantum computing system to perform operations comprising:
generating a first laser pulse and a second laser pulse to cause entanglement interaction between a first trapped ion and a second trapped ion of the plurality of trapped ions, wherein generating the first laser pulse and the second laser pulse comprises:
stabilizing the entanglement interaction between the first and second trapped ions against fluctuations in frequencies of collective motional modes of the plurality of trapped ions in a second direction that is perpendicular to the first direction; and
applying the generated first laser pulse to the first trapped ion and the generated second laser pulse to the second trapped ion.
