Presentation Information
[21a-A301-4]Error analysis of the dispersive readout on superconducting transmon qubits
〇Yutaka Tabuchi1, Shuhei Tamate1 (1.RIKEN)
Keywords:
Quantum Computer,Superconducting quantum circuits
Superconducting quantum computers implementing quantum error correction (QEC) features have been extensively studied recently. The QEC requires high-fidelity measurements and quantum gates, given that it prohibits using error mitigation methods commonly used in the noisy intermediate-scale quantum computation, where they exploit pre-and-post calibration of the results. In this talk, we analyze the error graph that determines the performance of the dispersive readout in superconducting transmon qubits. The error of the backaction of the transmon qubits, together with those from the qubit relaxation and the signal-to-noise ratio, make a trade-off in minimizing the readout error. We unveil the requirement of the coherence times of the qubits and readout noise through the optimization of the error graph.