Migration guide
Migrating from no_bunching (deprecated)
Warning
Deprecated since version 0.3:
no_bunching is deprecated and is removed since version 0.3.0. Use
computation_space instead inside the chosen measurement_strategy.
See this migration section for the mapping.
The no_bunching flag is deprecated.
If you are using a QuantumLayer and you need to control how Fock states are
truncated or encoded, define the computation_space inside the measurement_strategy
instead.
If you are using a Kernel, define the encoding or truncation of the Fock states in the
computation_space parameter.
Map the legacy intent as follows:
no_bunching=False→computation_space=ComputationSpace.FOCK(full Fock space)no_bunching=True→computation_space=ComputationSpace.UNBUNCHED(one photon per mode)Dual-rail encodings →
computation_space=ComputationSpace.DUAL_RAIL
This keeps measurement strategy selection orthogonal to simulation space configuration.
Migrating from legacy MeasurementStrategy
Warning
Deprecated since version 0.3:
Enum-style and string access is deprecated and will be removed from MeasurementStrategy in v0.4.
Use the new factory methods instead: MeasurementStrategy.probs(computation_space=...), MeasurementStrategy.mode_expectations(computation_space=...), MeasurementStrategy.amplitudes(computation_space=...).
See this migration section for the mapping.
Old to new mappings
Deprecated |
Recommended replacement |
|---|---|
|
|
|
|
|
|
|
|
|
|
Computation space now lives inside the strategy. If you already use the new factory
methods, do not also pass computation_space separately in constructors such as
QuantumLayer.
# Deprecated (legacy enum + separate computation_space)
# QuantumLayer(..., measurement_strategy=MeasurementStrategy.PROBABILITIES,
# computation_space=ComputationSpace.FOCK)
# Recommended
QuantumLayer(..., measurement_strategy=MeasurementStrategy.probs(ComputationSpace.FOCK))