QubitMapper¶

class QubitMapper[source]¶

Bases: ABC

The interface for implementing methods which map from a SparseLabelOp to a qubit operator in the form of a SparsePauliOp.

Methods

map(second_q_ops, *, register_length=None)[source]¶

Maps a second quantized operator or a list, dict of second quantized operators based on the current mapper.

Parameters:

second_q_ops (SparseLabelOp | List[SparseLabelOp | None] | Dict[str, SparseLabelOp]) – A second quantized operator, or list thereof.
register_length (int | None) – when provided, this will be used to overwrite the register_length attribute of the SparseLabelOp being mapped. This is possible because the register_length is considered a lower bound in a SparseLabelOp.

Returns:

A qubit operator in the form of a SparsePauliOp, or list (resp. dict) thereof if a list (resp. dict) of second quantized operators was supplied.

Return type: