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- W4286242390 abstract "Near-term quantum systems tend to be noisy. Crosstalk noise has been recognized as one of several major types of noises in superconducting Noisy Intermediate-Scale Quantum (NISQ) devices. Crosstalk arises from the concurrent execution of two-qubit gates on nearby qubits, such as texttt{CX}. It might significantly raise the error rate of gates in comparison to running them individually. Crosstalk can be mitigated through scheduling or hardware machine tuning. Prior scientific studies, however, manage crosstalk at a really late phase in the compilation process, usually after hardware mapping is done. It may miss great opportunities of optimizing algorithm logic, routing, and crosstalk at the same time. In this paper, we push the envelope by considering all these factors simultaneously at the very early compilation stage. We propose a crosstalk-aware quantum program compilation framework called CQC that can enhance crosstalk mitigation while achieving satisfactory circuit depth. Moreover, we identify opportunities for translation from intermediate representation to the circuit for application-specific crosstalk mitigation, for instance, the texttt{CX} ladder construction in variational quantum eigensolvers (VQE). Evaluations through simulation and on real IBM-Q devices show that our framework can significantly reduce the error rate by up to 6$times$, with only $sim$60% circuit depth compared to state-of-the-art gate scheduling approaches. In particular, for VQE, we demonstrate 49% circuit depth reduction with 9.6% fidelity improvement over prior art on the H4 molecule using IBMQ Guadalupe. Our CQC framework will be released on GitHub." @default.
- W4286242390 created "2022-07-21" @default.
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- W4286242390 date "2022-07-12" @default.
- W4286242390 modified "2023-09-24" @default.
- W4286242390 title "A Synergistic Compilation Workflow for Tackling Crosstalk in Quantum Machines" @default.
- W4286242390 doi "https://doi.org/10.48550/arxiv.2207.05751" @default.
- W4286242390 hasPublicationYear "2022" @default.
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