qiskit.extensions.UnitaryGate

class UnitaryGate(data, label=None)

Class for representing unitary gates

Create a gate from a numeric unitary matrix.

Parâmetros

• data (matrix or Operator) – unitary operator.

• label (str) – unitary name for backend [Default: None].

Levanta

ExtensionError – if input data is not an N-qubit unitary operator.

__init__(data, label=None)

Create a gate from a numeric unitary matrix.

Parâmetros

• data (matrix or Operator) – unitary operator.

• label (str) – unitary name for backend [Default: None].

Levanta

ExtensionError – if input data is not an N-qubit unitary operator.

Methods

__init__(data[, label])	Create a gate from a numeric unitary matrix.
add_decomposition(decomposition)	Add a decomposition of the instruction to the SessionEquivalenceLibrary.
adjoint()	Return the adjoint of the unitary.
assemble()	Assemble a QasmQobjInstruction
broadcast_arguments(qargs, cargs)	Validation and handling of the arguments and its relationship.
c_if(classical, val)	Add classical condition on register classical and value val.
conjugate()	Return the conjugate of the unitary.
control([num_ctrl_qubits, label, ctrl_state])	Return controlled version of gate
copy([name])	Copy of the instruction.
inverse()	Return the adjoint of the unitary.
is_parameterized()	Return True .IFF.
mirror()	DEPRECATED: use instruction.reverse_ops().
power(exponent)	Creates a unitary gate as gate^exponent.
qasm()	The qasm for a custom unitary gate This is achieved by adding a custom gate that corresponds to the definition of this gate.
repeat(n)	Creates an instruction with gate repeated n amount of times.
reverse_ops()	For a composite instruction, reverse the order of sub-instructions.
to_matrix()	Return matrix for the unitary.
transpose()	Return the transpose of the unitary.
validate_parameter(parameter)	Unitary gate parameter has to be an ndarray.

Attributes

decompositions	Get the decompositions of the instruction from the SessionEquivalenceLibrary.
definition	Return definition in terms of other basic gates.
duration	Get the duration.
label	Return gate label
params	return instruction params.
unit	Get the time unit of duration.

add_decomposition(decomposition)

Add a decomposition of the instruction to the SessionEquivalenceLibrary.

adjoint()

Return the adjoint of the unitary.

assemble()

Assemble a QasmQobjInstruction

Tipo de retorno

Instruction

broadcast_arguments(qargs, cargs)

Validation and handling of the arguments and its relationship.

For example, cx([q[0],q[1]], q[2]) means cx(q[0], q[2]); cx(q[1], q[2]). This method yields the arguments in the right grouping. In the given example:

in: [[q[0],q[1]], q[2]],[]
outs: [q[0], q[2]], []
      [q[1], q[2]], []

The general broadcasting rules are:

• If len(qargs) == 1:

  [q[0], q[1]] -> [q[0]],[q[1]]
  

• If len(qargs) == 2:

  [[q[0], q[1]], [r[0], r[1]]] -> [q[0], r[0]], [q[1], r[1]]
  [[q[0]], [r[0], r[1]]]       -> [q[0], r[0]], [q[0], r[1]]
  [[q[0], q[1]], [r[0]]]       -> [q[0], r[0]], [q[1], r[0]]
  

• If len(qargs) >= 3:

  [q[0], q[1]], [r[0], r[1]],  ...] -> [q[0], r[0], ...], [q[1], r[1], ...]
  

Parâmetros

• qargs (List) – List of quantum bit arguments.

• cargs (List) – List of classical bit arguments.

Tipo de retorno

Tuple[List, List]

Retorna

A tuple with single arguments.

Levanta

CircuitError – If the input is not valid. For example, the number of arguments does not match the gate expectation.

c_if(classical, val)

Add classical condition on register classical and value val.

conjugate()

Return the conjugate of the unitary.

control(num_ctrl_qubits=1, label=None, ctrl_state=None)

Return controlled version of gate

Parâmetros

• num_ctrl_qubits (int) – number of controls to add to gate (default=1)

• label (str) – optional gate label

• ctrl_state (int or str or None) – The control state in decimal or as a bit string (e.g. ‘1011’). If None, use 2**num_ctrl_qubits-1.

Retorna

controlled version of gate.

Tipo de retorno

UnitaryGate

Levanta

• QiskitError – Invalid ctrl_state.

• ExtensionError – Non-unitary controlled unitary.

copy(name=None)

Copy of the instruction.

Parâmetros

name (str) – name to be given to the copied circuit, if None then the name stays the same.

Retorna

a copy of the current instruction, with the name

updated if it was provided

Tipo de retorno

qiskit.circuit.Instruction

property decompositions

Get the decompositions of the instruction from the SessionEquivalenceLibrary.

property definition

Return definition in terms of other basic gates.

property duration

Get the duration.

inverse()

Return the adjoint of the unitary.

is_parameterized()

Return True .IFF. instruction is parameterized else False

property label

Return gate label

Tipo de retorno

str

mirror()

DEPRECATED: use instruction.reverse_ops().

Retorna

a new instruction with sub-instructions

reversed.

Tipo de retorno

qiskit.circuit.Instruction

property params

return instruction params.

power(exponent)

Creates a unitary gate as gate^exponent.

Parâmetros

exponent (float) – Gate^exponent

Retorna

To which to_matrix is self.to_matrix^exponent.

Tipo de retorno

qiskit.extensions.UnitaryGate

Levanta

CircuitError – If Gate is not unitary

qasm()

The qasm for a custom unitary gate This is achieved by adding a custom gate that corresponds to the definition of this gate. It gives the gate a random name if one hasn’t been given to it.

repeat(n)

Creates an instruction with gate repeated n amount of times.

Parâmetros

n (int) – Number of times to repeat the instruction

Retorna

Containing the definition.

Tipo de retorno

qiskit.circuit.Instruction

Levanta

CircuitError – If n < 1.

reverse_ops()

For a composite instruction, reverse the order of sub-instructions.

This is done by recursively reversing all sub-instructions. It does not invert any gate.

Retorna

a new instruction with

sub-instructions reversed.

Tipo de retorno

qiskit.circuit.Instruction

to_matrix()

Return matrix for the unitary.

transpose()

Return the transpose of the unitary.

property unit

Get the time unit of duration.

validate_parameter(parameter)

Unitary gate parameter has to be an ndarray.