quairkit.core.operator¶

Basic operator.

class quairkit.core.operator.Operator(backend=None, dtype=None)¶

The basic class to implement the operation in QuAIRKit.

Parameters:¶

backend : Backend | None¶

The backend implementation of the operator. Defaults to None, which means to use the default backend implementation.

dtype : str | None¶

The data type of the operator. Defaults to None, which means to use the default data type.

property info : OperatorInfoType¶

Information of this operator.

class quairkit.core.operator.OperatorInfoType¶

A dictionary storing basic information for Operator.

Keys:

• name: Operator name.

• type: Operator type, can be one of:

  • ‘general’: General operator.

  • ‘gate’: Quantum gate.

  • ‘channel’: Quantum channel.

  • ‘locc’: One-way local operation and classical communication.

• tex: LaTeX representation (without ‘$’).

• system_idx: Physical system index or indices the operator acts upon. Shape:

  [# of operators, num_acted_system]

• num_ctrl_system: Number of indices that control the operator.

• label: Labels for control systems, collapse events (measurement), or measurement outcomes.

• param: Parameter tensor for parameterized operators. Shape:

  [1 or len(system_idx), batch_size, num_acted_param]

• param_sharing: Boolean indicating if parameters are shared. Defaults to False.

• matrix: Matrix representation (if type is ‘gate’).

• api: Circuit API method that invokes the operator in a circuit.

• permute: Index representation for permutation operators.

• kwargs: Additional keyword arguments for circuit APIs.

• plot_width: Plot width (optional, default: None).