# qiskit.algorithms.state_fidelities

## State Fidelity Interfaces

`qiskit.algorithms.state_fidelities`

### State Fidelities

`BaseStateFidelity` () | An interface to calculate state fidelities (state overlaps) for pairs of (parametrized) quantum circuits. |

`ComputeUncompute` (sampler[, options, local]) | This class leverages the sampler primitive to calculate the state fidelity of two quantum circuits following the compute-uncompute method (see [1] for further reference). |

### Results

`StateFidelityResult`

(fidelities, ...)This class stores the result of StateFidelity computations.

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