cirq.work.observable_measurement.measure_observables

Measure a collection of PauliString observables for a state prepared by a Circuit.

If you need more control over the process, please see measure_grouped_settings for a lower-level API. If you would like your results returned as a pandas DataFrame, please see measure_observables_df.

circuit The circuit used to prepare the state to measure. This can contain parameters, in which case you should also specify circuit_sweep.
observables A collection of PauliString observables to measure. These will be grouped into simultaneously-measurable groups, see grouper argument.
sampler The sampler.
stopping_criteria A StoppingCriteria object to indicate how precisely to sample measurements for estimating observables.
readout_symmetrization If set to True, each run will be split into two: one normal and one where a bit flip is incorporated prior to measurement. In the latter case, the measured bit will be flipped back classically and accumulated together. This causes readout error to appear symmetric, p(0|0) = p(1|1).
circuit_sweep Additional parameter sweeps for parameters contained in circuit. The total sweep is the product of the circuit sweep with parameter settings for the single-qubit basis-change rotations.
grouper Either "greedy" or a function that groups lists of InitObsSetting. See the documentation for the grouped_settings argument of measure_grouped_settings for full details.
readout_calibrations The result of calibrate_readout_error.
checkpoint Options to set up optional checkpointing of intermediate data for each iteration of the sampling loop. See the documentation for CheckpointFileOptions for more. Load in these results with cirq.read_json.

A list of ObservableMeasuredResult; one for each input PauliString.