Benchmarking qubit quality and critical subroutines on IBM's 20 qubit device
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Abstract
As superconducting qubits continue to advance technologically, so too does the interest level in their viability for tackling quantum algorithms, ultimately reaching for the popularized notion of ”Quantum Supremacy”. In this study we characterize and identify several experiments which aim to benchmark various qubit qualities and subroutines which we deem critical to the success of larger, more complex quantum algorithms. These include experimentally measuring T1 and T2 coherence times, gate fidelities, sequential CNOT gate success rates, and finally CCNOT and QFT† circuits implemented on several different qubit geometries. All of these experiments are performed on IBM’s 20-qubit ’Poughkeepsie’ architecture, demonstrating the capabilities and limitations of state-of-the-art qubits.