Measuring the Stability of NISQ Gate-Based Hardware Using a 1+1 Quantum Field Theory*

Coherent and incoherent errors present on today's Noisy Intermediate Scale Quantum (NISQ) processors impact the quantum computational accuracy and reproducibility of physics applications run on these machines. Understanding and quantitatively measuring these errors provide essential information that assists in interpreting the results of these quantum computations. We report here on an in-depth study using cycle benchmarking to measure the impact of these errors on the stability of the 2-qubit CNOT gates in the 1+1 Transverse Field Ising Model (TFIM) circuit. Measurements of inter-day and intra-day qubit calibration drift and placement of the quantum circuit on separate qubit groups in different physical locations on the processor are presented using this TFIM Hamiltonian running on an IBM Quantum Network superconducting transmon hardware platform. Studies are also getting underway that examine magnon spectra and scattering phase shift quantum computations. All of these results are summarized in the larger context of their impacts on physics applications implemented on NISQ type gate based quantum computing hardware platforms.