MCPhaseGate¶
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class
MCPhaseGate
(lam, num_ctrl_qubits, label=None)[source]¶ Bases:
qiskit.circuit.controlledgate.ControlledGate
Multi-controlled-Phase gate.
This is a diagonal and symmetric gate that induces a phase on the state of the target qubit, depending on the state of the control qubits.
Circuit symbol:
q_0: ───■──── │ . │ q_(n-1): ───■──── ┌──┴───┐ q_n: ┤ P(λ) ├ └──────┘
See also
CPhaseGate
: The singly-controlled-version of this gate.Create new MCPhase gate.
Methods Defined Here
Controlled version of this gate.
Return inverted MCU1 gate (\(MCU1(\lambda){\dagger} = MCU1(-\lambda)\))
Attributes
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ctrl_state
¶ Return the control state of the gate as a decimal integer.
- Return type
int
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decompositions
¶ Get the decompositions of the instruction from the SessionEquivalenceLibrary.
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definition
¶ Return definition in terms of other basic gates. If the gate has open controls, as determined from self.ctrl_state, the returned definition is conjugated with X without changing the internal _definition.
- Return type
List
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duration
¶ Get the duration.
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label
¶ Return instruction label
- Return type
str
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name
¶ Get name of gate. If the gate has open controls the gate name will become:
<original_name_o<ctrl_state>
where <original_name> is the gate name for the default case of closed control qubits and <ctrl_state> is the integer value of the control state for the gate.
- Return type
str
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num_ctrl_qubits
¶ Get number of control qubits.
- Returns
The number of control qubits for the gate.
- Return type
int
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params
¶ Get parameters from base_gate.
- Returns
List of gate parameters.
- Return type
list
- Raises
CircuitError – Controlled gate does not define a base gate
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unit
¶ Get the time unit of duration.
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