Quantum error mitigation using hardware-friendly probabilistic error correction
AssigneeInternational Business Machines Corporation
InventorsChristophe Piveteau, David Sutter, Stefan Woerner
Life of this patent
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Abstract
Techniques facilitating error mitigation for quantum computing devices. In one example, a system can comprise a process that executes computer executable components stored in memory. The computer executable components comprise: an approximation component; a budget component; and an optimization component. The approximation component can generate an approximate decomposition of a quantum gate. The budget component can set a budget value (Cbudget) for a C-factor that is a metric for increase in variance of quasi-probability sampling. The optimization component can determine an optimal decomposition for the quantum gate as a function of Cbudget.
Claims25
A system, comprising:
- a processor that executes the following computer executable components stored in memory, wherein the computer executable components comprise:
- an approximation component that generates an approximate decomposition of a quantum gate;
- a budget component that sets, based on the approximate decomposition, a budget value (Cbudget) for a C-factor that is a metric for increase in variance of quasi-probability sampling;
- and
- an optimization component that determines an optimal decomposition for the quantum gate as a function of the C-factor budget.
A computer-implemented method, comprising:
- generating, by a system, an approximate decomposition of a quantum gate;
- setting, by the system, based on the approximate decomposition, a budget value (Cbudget) for a C-factor that is a metric for increase in variance of quasi-probability sampling;
- and
- determining, by the system, an optimal decomposition for the quantum gate as a function of the C-factor budget.
A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:
- generate an approximate decomposition of a quantum gate;
- set, based on the approximate decomposition, a budget value (Cbudget) for a C-factor that is a metric for increase in variance of quasi-probability sampling;
- and
- determine an optimal decomposition for the quantum gate as a function of the C-factor budget.
Dependencies are inferred from the claim text.