Noise Aware Utility Optimization of NISQ Devices
arxiv(2024)
摘要
In order to enter the era of utility, noisy intermediate-scale quantum (NISQ)
devices need to enable long-range entanglement of large qubit chains. However,
due to the limited connectivity of superconducting NISQ devices, long-range
entangling gates are realized in linear depth. Furthermore, a time-dependent
degradation of the average CNOT gate fidelity is observed. Likely due to aging,
this phenomenon further degrades entanglement capabilities. Our aim is to help
in the current efforts to achieve utility and provide an opportunity to extend
the utility lifespan of current devices –albeit by selecting fewer, high
quality resources. To achieve this, we provide a method to transform
user-provided CNOT and readout error requirements into a compliant partition
onto which circuits can be executed. We demonstrate an improvement of up to 52
in fidelity for a random CNOT chain of length 50 qubits and consistent
improvements between 11.8
increments of 10, respectively.
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