forest.benchmarking.tomography.linear_inv_state_estimate(results: List[forest.benchmarking.observable_estimation.ExperimentResult], qubits: List[int]) → numpy.ndarray

Estimate a quantum state using linear inversion.

This is the simplest state tomography post processing. To use this function, collect state tomography data with generate_state_tomography_experiment() and estimate_observables().

For more details on this post-processing technique, see or see section 3.4 of [WOOD]

[WOOD]Initialization and characterization of open quantum systems. C. Wood. PhD thesis from University of Waterloo, (2015).
  • results – A tomographically complete list of results.
  • qubits – All qubits that were tomographized. This specifies the order in which qubits will be kron’ed together; the first qubit in the list is the left-most tensor factor.

A point estimate of the quantum state rho.