Qubit readout error mitigation with bit-flip averaging
| Autor: | Alistair W. R. Smith, Myungshik Kim, Kiran E. Khosla, Chris N. Self |
|---|---|
| Přispěvatelé: | Engineering & Physical Science Research Council (E |
| Rok vydání: | 2021 |
| Předmět: |
Quantum Physics
Multidisciplinary Science & Technology Computer science Error mitigation Physics FOS: Physical sciences SciAdv r-articles 01 natural sciences 010305 fluids & plasmas Multidisciplinary Sciences Bit (horse) quant-ph ComputerSystemsOrganization_MISCELLANEOUS Qubit 0103 physical sciences Computer Science Electronic engineering Science & Technology - Other Topics Physical and Materials Sciences Quantum Physics (quant-ph) 010306 general physics Quantum Quantum computer Research Article |
| Zdroj: | Science Advances |
| Popis: | Description We present a scheme to characterize and mitigate readout errors on multi-qubit devices more efficiently using random bit-flips. Quantum computers are becoming increasingly accessible and may soon outperform classical computers for useful tasks. However, qubit readout errors remain a substantial hurdle to running quantum algorithms on current devices. We present a scheme to more efficiently mitigate these errors on quantum hardware and numerically show that our method consistently gives advantage over previous mitigation schemes. Our scheme removes biases in the readout errors, allowing a general error model to be built with far fewer calibration measurements. Specifically, for reading out n-qubits, we show a factor of 2n reduction in the number of calibration measurements without sacrificing the ability to compensate for correlated errors. Our approach can be combined with, and simplify, other mitigation methods, allowing tractable mitigation even for large numbers of qubits. |
| Databáze: | OpenAIRE |
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