Procedure for improving cross-resonance noise resistance using pulse-level control

• URL: http://arxiv.org/abs/2303.12771v1
• Date: Wed, 22 Mar 2023 17:35:04 GMT
• Title: Procedure for improving cross-resonance noise resistance using pulse-level control
• Authors: David Danin and Felix Tennie
• Abstract summary: We present a pulse-level approach for calibrating an improved cross-resonance gate CR($theta$) for arbitrary $theta$. This gate can be used to produce a wide range of other two-qubit gates via the application of standard single-qubit gates.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Current implementations of superconducting qubits are often limited by the low fidelities of multi-qubit gates. We present a reproducible and runtime-efficient pulse-level approach for calibrating an improved cross-resonance gate CR($\theta$) for arbitrary $\theta$. This CR($\theta$) gate can be used to produce a wide range of other two-qubit gates via the application of standard single-qubit gates. By performing an interleaved randomised benchmarking experiment, we demonstrate that our approach leads to a significantly higher noise resistance than the circuit-level approach currently used by IBM. Hence, our procedure provides a genuine improvement for applications where noise remains a limiting factor.

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