supermarq.converters.qiskit

Attributes

CIRCUIT_TYPE

Functions

`cirq_classical_control_to_qiskit`(...)	Converts cirq classical control to qiskit classical control. Cirq uses sympy for its
`cirq_gate_to_qiskit_gate`(→ qiskit.circuit.Gate)	Convert a single cirq.Gate to a qiskit Gate.
`cirq_qubits_to_qiskit`(→ qiskit.QuantumCircuit)	Converts cirq qubits to qiskit qubits.
`cirq_to_qiskit`(→ qiskit.QuantumCircuit)	Converts cirq.Circuit into a qiskit.QuantumCircuit with a single qubit register.
`decompose_measurement_inversions`(→ CIRCUIT_TYPE)	Decompose inverted measurements by replacing their invert_mask with explicit X gates.
`qiskit_gate_to_cirq_gate`(→ cirq.Gate \| None)	Convert a single qiskit instruction to a single cirq.Gate, or return None.
`qiskit_to_cirq`(→ cirq.Circuit)	Converts a qiskit.QuantumCircuit to a cirq.Circuit, preserving global phase.
`swap_endianness`(→ numpy.typing.NDArray[numpy.complex128])	Change matrix from cirq-endian and qiskit-endian (and vice versa).

Module Contents

supermarq.converters.qiskit.cirq_classical_control_to_qiskit(op: cirq.Operation, measurement_key_to_indices: dict[str, list[int]], cr: qiskit.ClassicalRegister) → qiskit.circuit.classical.expr.Expr | tuple[qiskit.circuit.Clbit, int]

Converts cirq classical control to qiskit classical control. Cirq uses sympy for its classical logic, qiskit uses its own classical expressions.

Parameters:

op – The cirq operation that is being classically controlled
measurement_key_to_indices – Dictionary that maps cirq measurement keys to qiskit
indices. (Clbit)
cr – The qiskit classical register that controls the operations

Returns:

A qiskit condition for classical control.

supermarq.converters.qiskit.cirq_gate_to_qiskit_gate(cirq_gate: cirq.Gate) → qiskit.circuit.Gate: Convert a single cirq.Gate to a qiskit Gate.

supermarq.converters.qiskit.cirq_qubits_to_qiskit(qubits: collections.abc.Sequence[cirq.Qid]) → qiskit.QuantumCircuit

Converts cirq qubits to qiskit qubits.

Parameters:: qubits – A sequence of cirq.Qid s.
Returns:: A qiskit.QuantumCircuit object with the appropriate qubits.

supermarq.converters.qiskit.cirq_to_qiskit(cirq_circuit: cirq.Circuit, qubits: collections.abc.Sequence[cirq.Qid]) → qiskit.QuantumCircuit

Converts cirq.Circuit into a qiskit.QuantumCircuit with a single qubit register.

Note: Qubits in the qiskit circuit are ordered according to the given qubits sequence (i.e. n-th qubit in qiskit_circuit.qubits = n-th qubit in sequence).

Parameters:

cirq_circuit – The circuit to convert into qiskit.
qubits – The qubits belonging to cirq_circuit.

Returns:

The qiskit equivalent of cirq_circuit.

supermarq.converters.qiskit.decompose_measurement_inversions(circuit: CIRCUIT_TYPE, context: cirq.TransformerContext | None = None) → CIRCUIT_TYPE

Decompose inverted measurements by replacing their invert_mask with explicit X gates.

This is useful after running some cirq transformers (namely cirq.eject_phased_paulis), which will absorb Pauli gates into measurements by changing their invert_mask.

Parameters:

circuit – The circuit to be transformed.
context – An optional cirq.TransformerContext containing configuration and logging information.

Returns:

An equivalent circuit with X gates in place of inversion masks.

supermarq.converters.qiskit.qiskit_gate_to_cirq_gate(inst: qiskit.circuit.Instruction) → cirq.Gate | None: Convert a single qiskit instruction to a single cirq.Gate, or return None.

supermarq.converters.qiskit.qiskit_to_cirq(qiskit_circuit: qiskit.QuantumCircuit, keep_global_phase: bool = False) → cirq.Circuit

Converts a qiskit.QuantumCircuit to a cirq.Circuit, preserving global phase.

Parameters:

qiskit_circuit – The circuit to convert into cirq.
keep_global_phase – Boolean flag to preserve the global phase of the circuit. Defaults to False.

Returns:

The cirq equivalent circuit of qiskit_circuit.

supermarq.converters.qiskit.swap_endianness(matrix: numpy.typing.NDArray[numpy.complex128]) → numpy.typing.NDArray[numpy.complex128]: Change matrix from cirq-endian and qiskit-endian (and vice versa).

supermarq.converters.qiskit.CIRCUIT_TYPE