Editing Fidelity Estimation

==Functionality Description==


Fidelity Estimation is the certification technique which provides an estimate of the fidelity between the desired quantum process or state  and the actual result obtained in the laboratory. Fidelity is a measure of the "closeness" of two quantum states. It expresses the probability that one state will pass a test to identify as the other. Hence this technique is used to certify if an experimental device prepares the desired quantum state. The [[figure of merit]] in these protocols is the fidelity of the prepared quantum state

==Protocols==
* [[Direct Fidelity Estimation]]

==Properties==
* This method is insensitive to the SPAM errors
* The figure of merit is fidelity of the prepared quantum state to the actual state
* This method is a certification technique which has lower sample and resource complexity than [[Tomography]] but a higher complexity than [[Randomised Benchmarking]]

==Related Papers==
* S.Flammia et al (2011) arXiv:1104.4695v3: Direct Fidelity Estimation from Few Pauli Measurements

<div style='text-align: right;'>''*contributed by Rhea Parekh''</div>