cirq.CliffordSimulatorStepResult

A StepResult that includes StateVectorMixin methods.

Inherits From: StepResultBase, StepResult

cirq.CliffordSimulatorStepResult(
    sim_state: 'cirq.SimulationStateBase[clifford.StabilizerChFormSimulationState]'
)

Attributes
`measurements`
`state`

Attributes

measurements

state

Methods

`sample`

View source

sample(
    qubits: List['cirq.Qid'],
    repetitions: int = 1,
    seed: 'cirq.RANDOM_STATE_OR_SEED_LIKE' = None
) -> np.ndarray

Samples from the system at this point in the computation.

Note that this does not collapse the state vector.

Args
`qubits`	The qubits to be sampled in an order that influence the returned measurement results.
`repetitions`	The number of samples to take.
`seed`	A seed for the pseudorandom number generator.

Returns
Measurement results with True corresponding to the `\|1⟩` state. The outer list is for repetitions, and the inner corresponds to measurements ordered by the supplied qubits. These lists are wrapped as a numpy ndarray.

`sample_measurement_ops`

View source

sample_measurement_ops(
    measurement_ops: List['cirq.GateOperation'],
    repetitions: int = 1,
    seed: 'cirq.RANDOM_STATE_OR_SEED_LIKE' = None,
    *,
    _allow_repeated=False
) -> Dict[str, np.ndarray]

Samples from the system at this point in the computation.

Note that this does not collapse the state vector.

In contrast to sample which samples qubits, this takes a list of cirq.GateOperation instances whose gates are cirq.MeasurementGate instances and then returns a mapping from the key in the measurement gate to the resulting bit strings. Different measurement operations must not act on the same qubits.

Args
`measurement_ops`	`GateOperation` instances whose gates are `MeasurementGate` instances to be sampled form.
`repetitions`	The number of samples to take.
`seed`	A seed for the pseudorandom number generator.
`_allow_repeated`	If True, adds extra dimension to the result, corresponding to the number of times a key is repeated.

Returns: A dictionary from measurement gate key to measurement results. Measurement results are stored in a 2-dimensional numpy array, the first dimension corresponding to the repetition and the second to the actual boolean measurement results (ordered by the qubits being measured.)

Raises
`ValueError`	If the operation's gates are not `MeasurementGate` instances or a qubit is acted upon multiple times by different operations from `measurement_ops`.