convert_to_prx#

convert_to_prx(qc: QuantumCircuit) → QuantumCircuit[source]#

Convert single-qubit gates to PRX (Phased-RX) gate decomposition.

This pass converts arbitrary single-qubit gates to PRX gates. When a U3 gate is already in PRX form (\(\lambda \approx -\phi\)), it is replaced by a single PRXGate. Otherwise it is decomposed into a sequence of two PRXGate operations.

Global phases introduced by the decompositions are accumulated and emitted as a GPhaseGate on the zeroth qubit of the output circuit at the end of the pass.

Parameters:

qcQuantumCircuit: The input quantum circuit.

Returns:

QuantumCircuit: A new circuit with single-qubit gates decomposed into PRX gates and an optional trailing global-phase gate.

Examples

>>> from qrisp import PassManager, convert_to_prx
>>> pm = PassManager()
>>> pm.add_pass(convert_to_prx)
>>> transpiled_qc = pm.run(qc)

PRXGate#

class PRXGate(alpha: FloatLike = 0, beta: FloatLike = 0)[source]#

PRX (Phased-RX) gate.

The PRX gate is a single-qubit gate of the form:

\[\text{PRX}(\alpha, \beta) = R_Z(\beta) \cdot R_X(\alpha) \cdot R_Z(-\beta)\]

Parameters:

alphaFloatLike, optional: The rotation angle. The default is 0.
betaFloatLike, optional: The phase parameter. The default is 0.