Performance Indicator

Performance Indicators measure the result of an optimization technique (as a metric) under specific aspects.

Classical

Quantum

Examples

In quantum computing the most commonly used indicators are:

Fidelity: A measure of closeness of two quantum states. Used to compare noiseless simulation to noisy physical execution. Gate Fidelity is the fidelity induced by a single quantum gate.
Duration: Overall execution time of a quantum operation, usually related to the coherence time.
Gate-Depth: The maximum number of (multi-qudit) gates on a qudit. Most commonly as T-Gate-Depth, which only counts a specific set of gates.
Noise Resilience: A measure of how well a circuit performs on varying levels of noise. No concrete metric exists yet.