quairkit.operator.special¶

The source file of the class for the special quantum operator.

class quairkit.operator.special.ResetState¶

The class to reset the quantum state. It will be implemented soon.

The forward function.

class quairkit.operator.special.Collapse(system_idx, desired_result=None, if_print=False, measure_basis=None)¶

The class to compute the collapse of the quantum state.

Parameters:¶

system_idx : int | Iterable[int]¶: list of systems to be collapsed.
desired_result : int | str¶: The desired result you want to collapse. Defaults to None meaning randomly choose one.
if_print : bool¶: whether print the information about the collapsed state. Defaults to False.
measure_basis : Tensor | None¶: The basis of the measurement. The quantum state will collapse to the corresponding eigenstate.

Raises:¶

NotImplementedError – If the basis of measurement is not z. Other bases will be implemented in future.

Note

When desired_result is None, Collapse does not support gradient calculation

forward(state)¶

Compute the collapse of the input state.

Parameters:¶

Returns:¶

The collapsed quantum state.

Return type:¶

State