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Simulating quench dynamics on a digital quantum computer with data-driven error mitigation
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DOI：10.1088/2058-9565/ac0e7a.png)
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Abstract
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Error mitigation is likely to be key in obtaining near term quantum advantage. In this work we present one of the first implementations of several Clifford data regression (CDR) based methods which are used to mitigate the effect of noise in real quantum data. We explore the dynamics of the 1D Ising model with transverse and longitudinal magnetic fields, highlighting signatures of confinement. We find in general CDR based techniques are advantageous in comparison with zero-noise extrapolation and obtain quantitative agreement with exact results for systems of nine qubits with circuit depths of up to 176, involving hundreds of CNOT gates. This is the largest systems investigated so far in a study of this type. We also investigate the two-point correlation function and find the effect of noise on this more complicated observable can be mitigated using Clifford quantum circuit data highlighting the utility of these methods.
Keywords:
quantum error mitigation
dynamical quantum simulation
data driven error mitigation
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1.4K
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