qandle.measurements module

class qandle.measurements.BuiltMeasurement(*args, **kwargs)[source]

Bases: BuiltOperator

decompose()[source]

to_qasm() → QasmRepresentation[source]: Returns the OpenQASM2 representation of the operator.

class qandle.measurements.MeasureAllAbsolute(*args, **kwargs)[source]

Bases: BuiltMeasurement

Measure the absolute probability of the state-vector.

forward(state: Tensor) → Tensor[source]: Applies the operator to the state.

qandle.measurements.MeasureJointProbability: alias of MeasureAllAbsolute

class qandle.measurements.MeasureProbability[source]

Bases: UnbuiltMeasurement

Measure the probability of each qubit being in the \(\ket{0}\) state. Use 1 - measure_probability to get the probability of each qubit being in the \(\ket{1}\) state.

class qandle.measurements.MeasureProbabilityBuilt(num_qubits: int)[source]

Bases: BuiltMeasurement

forward(state: Tensor)[source]: Applies the operator to the state.

class qandle.measurements.MeasureState(*args, **kwargs)[source]

Bases: BuiltMeasurement

Measure the state-vector. As the state-vector is already a known, this measurement is a no-op.

forward(state: Tensor) → Tensor[source]: Applies the operator to the state.

class qandle.measurements.UnbuiltMeasurement[source]

Bases: UnbuiltOperator

build(num_qubits: int, **kwargs) → BuiltMeasurement[source]: Builds the operator, i.e. converts it to a torch.nn.Module.

to_qasm() → str[source]: Returns the OpenQASM2 representation of the operator.