MCMTVChain¶
- class MCMTVChain(gate, num_ctrl_qubits, num_target_qubits, label=None)[fuente]¶
Bases:
MCMTThe MCMT implementation using the CCX V-chain.
This implementation requires ancillas but is decomposed into a much shallower circuit than the default implementation in
MCMT.Expanded Circuit:
Examples:
>>> from qiskit.circuit.library import HGate >>> MCMTVChain(HGate(), 3, 2).draw()
- q_0: ──■────────────────────────■──
│ │
- q_1: ──■────────────────────────■──
│ │
- q_2: ──┼────■──────────────■────┼──
│ │ ┌───┐ │ │
- q_3: ──┼────┼──┤ H ├───────┼────┼──
│ │ └─┬─┘┌───┐ │ │
- q_4: ──┼────┼────┼──┤ H ├──┼────┼──
┌─┴─┐ │ │ └─┬─┘ │ ┌─┴─┐
- q_5: ┤ X ├──■────┼────┼────■──┤ X ├
└───┘┌─┴─┐ │ │ ┌─┴─┐└───┘
- q_6: ─────┤ X ├──■────■──┤ X ├─────
└───┘ └───┘
Create a new multi-control multi-target gate.
- Parámetros
gate (
Union[Gate,Callable[[QuantumCircuit,Qubit,Qubit],Instruction]]) – The gate to be applied controlled on the control qubits and applied to the target qubits. Can be either a Gate or a circuit method. If it is a callable, it will be casted to a Gate.num_ctrl_qubits (
int) – The number of control qubits.num_target_qubits (
int) – The number of target qubits.label (
Optional[str]) – The name for the controlled circuit block. If None, set to C-name where name is gate.name.
- Muestra
AttributeError – If the gate cannot be casted to a controlled gate.
AttributeError – If the number of controls or targets is 0.
Methods Defined Here
Return the inverse MCMT circuit, which is itself.
Attributes
- ancillas¶
Returns a list of ancilla bits in the order that the registers were added.
- Tipo del valor devuelto
List[AncillaQubit]
- calibrations¶
Return calibration dictionary.
- The custom pulse definition of a given gate is of the form
{“gate_name”: {(qubits, params): schedule}}
- Tipo del valor devuelto
dict
- clbits¶
Returns a list of classical bits in the order that the registers were added.
- Tipo del valor devuelto
List[Clbit]
- data¶
Return the circuit data (instructions and context).
- Devuelve
a list-like object containing the
CircuitInstructions for each instruction.- Tipo del valor devuelto
QuantumCircuitData
- extension_lib = 'include "qelib1.inc";'¶
- global_phase¶
Return the global phase of the circuit in radians.
- Tipo del valor devuelto
Union[ParameterExpression,float]
- header = 'OPENQASM 2.0;'¶
- instances = 87¶
- label¶
Get label.
- metadata¶
The user provided metadata associated with the circuit
The metadata for the circuit is a user provided
dictof metadata for the circuit. It will not be used to influence the execution or operation of the circuit, but it is expected to be passed between all transforms of the circuit (ie transpilation) and that providers will associate any circuit metadata with the results it returns from execution of that circuit.- Tipo del valor devuelto
dict
- num_ancilla_qubits¶
Return the number of ancilla qubits required.
- num_ancillas¶
Return the number of ancilla qubits.
- Tipo del valor devuelto
int
- num_clbits¶
Return number of classical bits.
- Tipo del valor devuelto
int
- num_parameters¶
Convenience function to get the number of parameter objects in the circuit.
- Tipo del valor devuelto
int
- num_qubits¶
Return number of qubits.
- Tipo del valor devuelto
int
- op_start_times¶
Return a list of operation start times.
This attribute is enabled once one of scheduling analysis passes runs on the quantum circuit.
- Tipo del valor devuelto
List[int]- Devuelve
List of integers representing instruction start times. The index corresponds to the index of instruction in
QuantumCircuit.data.- Muestra
AttributeError – When circuit is not scheduled.
- parameters¶
Convenience function to get the parameters defined in the parameter table.
- Tipo del valor devuelto
ParameterView
- prefix = 'circuit'¶