Experimental demonstration of mirror circuit fidelity estimation

The verification of the accuracy with which a quantum computer can implement an algorithmic circuit is a crucial milestone towards reliable quantum computation. In arXiv:2204.07568, we introduced mirror circuit fidelity estimation (MCFE), a novel technique for quantifying the fidelity of quantum circuit executions on a specific quantum computer. In this work, we present the experimental demonstration of MCFE and compare its performance with similar techniques, like direct fidelity estimation.