mindquantum.algorithm.compiler.cnry_decompose

mindquantum.algorithm.compiler.cnry_decompose(gate: gates.RY)

Decompose controlled RY gate.

Parameters

gate (RY) – A RY gate with zero or more control qubits.

Returns

List[Circuit], all possible decompose solution.

Examples

>>> from mindquantum.algorithm.compiler import cnry_decompose
>>> from mindquantum.core.circuit import Circuit
>>> from mindquantum.core.gates import RY
>>> cry = RY(1).on(2, [0, 1])
>>> origin_circ = Circuit() + cry
>>> decomposed_circ = cnry_decompose(cry)[0]
>>> origin_circ
q0: ──────■───────
          ┃
          ┃
q1: ──────■───────
          ┃
      ┏━━━┻━━━┓
q2: ──┨ RY(1) ┠───
      ┗━━━━━━━┛
>>> decomposed_circ
q0: ─────────────────────────────────────────■──────────────────────────────────────────■────
                                             ┃                                          ┃
                                             ┃                                          ┃
q1: ────────────────■──────────────────■─────╂──────────────────■─────────────────■─────╂────
                    ┃                  ┃     ┃                  ┃                 ┃     ┃
      ┏━━━━━━━━━┓ ┏━┻━┓ ┏━━━━━━━━━━┓ ┏━┻━┓ ┏━┻━┓ ┏━━━━━━━━━━┓ ┏━┻━┓ ┏━━━━━━━━━┓ ┏━┻━┓ ┏━┻━┓
q2: ──┨ RY(1/4) ┠─┨╺╋╸┠─┨ RY(-1/4) ┠─┨╺╋╸┠─┨╺╋╸┠─┨ RY(-1/4) ┠─┨╺╋╸┠─┨ RY(1/4) ┠─┨╺╋╸┠─┨╺╋╸┠──
      ┗━━━━━━━━━┛ ┗━━━┛ ┗━━━━━━━━━━┛ ┗━━━┛ ┗━━━┛ ┗━━━━━━━━━━┛ ┗━━━┛ ┗━━━━━━━━━┛ ┗━━━┛ ┗━━━┛