Quantum computing apparatus, quantum computing method, and program
AssigneeNTT, Inc.
InventorsSuguru ENDO, Yasunari SUZUKI, Yuki TOKUNAGA, Rui ASAOKA, Kaoru YAMAMOTO
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Abstract
A quantum computing device includes: a state creation unit that creates a non-physical state corresponding to a quantum state in which a projection operator to a code space of a rotation-symmetric bosonic code is applied to a quantum state in which an error has occurred during state preparation; and a quantum computing unit that executes a quantum algorithm using the non-physical state as an input and computes an expected value of an observable.
Claims7
A quantum computing apparatus comprising:
- circuitry configured to:
- create a non-physical state corresponding to a first quantum state in which a projection operator on a code space of a rotation-symmetric bosonic code is applied to a second quantum state in which an error has occurred during state preparation;
- execute a quantum algorithm using the non-physical state as an input;
- and
- compute an expected value of an observable based on the execution of the quantum algorithm.
A quantum computing method executed by a quantum computing apparatus, the quantum computing method comprising:
- creating a non-physical state corresponding to a first quantum state in which a projection operator on a code space of a rotation-symmetric bosonic code is applied to a second quantum state in which an error has occurred during state preparation;
- executing a quantum algorithm using the non-physical state as an input;
- and
- computing an expected value of an observable based on the execution of the quantum algorithm.
Dependencies are inferred from the claim text.