Quantum circuit debugging and sensitivity analysis via local inversions.
F. A. Calderon-Vargas, Timothy J Proctor, Kenneth Rudinger, Mohan Sarovar
Abstract
We write a d-layer circuit as:§ We define the i-inverse of the circuit as which we view as a local perturbation of the circuit.§ With the probability distribution over measurement outcomes, ( and is the set of all length-n bitstrings), we assess how such local perturbations affect the circuit outcomes by computing the distance, , between the original and perturbed output distributions.§ We use the total variation distance (TVD) for the distance measure