PartialVector¶
- class guppylang.emulator.PartialVector(base_state: ndarray[tuple[Any, ...], dtype[complexfloating]], total_qubits: int, specified_qubits: list[int])[source]¶
Partial state vector for simulator backends with statevector representation. Partial in the sense that some qubits may be traced out, and the state is represented as a distribution of state vectors.
- __abstractmethods__ = frozenset({})¶
- __init__(base_state: ndarray[tuple[Any, ...], dtype[complexfloating]], total_qubits: int, specified_qubits: list[int]) None[source]¶
Initialize a PartialVector from a base state vector, total qubits, and specified qubits.
- Args:
base_state: The state vector over all qubits in the system. total_qubits: Total number of qubits in the system specified_qubits: List of specified qubits in the state. Those not in this list are considered traced out.
- __subclasshook__()¶
Abstract classes can override this to customize issubclass().
This is invoked early on by abc.ABCMeta.__subclasscheck__(). It should return True, False or NotImplemented. If it returns NotImplemented, the normal algorithm is used. Otherwise, it overrides the normal algorithm (and the outcome is cached).
- property specified_qubits: list[int]¶
List of specified qubits in the state. Those not in this list are considered traced out.
- state_distribution(zero_threshold: float = 1e-12) list[TracedState[ndarray[tuple[Any, ...], dtype[complexfloating]]]][source]¶
Distribution of states after tracing out unspecified qubits. In general this results in a distribution of states, each with a probability.
- Args:
- zero_threshold: Threshold for considering a state amplitude to be zero.
Defaults to 1e-12.
- Returns:
List of traced states, each with a state vector and a probability.