mindquantum.core.circuit.BitFlipAdder

class mindquantum.core.circuit.BitFlipAdder(flip_rate: float, with_ctrl=True, focus_on: int = None, add_after: bool = True)[source]

Add BitFlip channel after or before quantum gate.

Parameters

flip_rate (float) – The flip rate for bit flip channel. For more detail please refers to BitFlipChannel.
with_ctrl (bool) – Whether add bit flip channel for control qubits. Default: True.
focus_on (int) – Only add this noise channel on focus_on qubit. If None, add to all qubits of selected quantum gate. Default: None.
add_after (bool) – Whether add this channel after quantum gate or not. If False, the channel will add before quantum gate. Default: True.

Examples

>>> from mindquantum.core.circuit import BitFlipAdder
>>> from mindquantum.core.circuit import Circuit
>>> circ = Circuit().h(0).x(1, 0)
>>> adder1 = BitFlipAdder(0.1, with_ctrl=False)
>>> adder1(circ)
      ┏━━━┓ ╔═════════════╗
q0: ──┨ H ┠─╢ BFC(p=1/10) ╟───■─────────────────────
      ┗━━━┛ ╚═════════════╝   ┃
                            ┏━┻━┓ ╔═════════════╗
q1: ────────────────────────┨╺╋╸┠─╢ BFC(p=1/10) ╟───
                            ┗━━━┛ ╚═════════════╝
>>> adder2 = BitFlipAdder(0.1, with_ctrl=False, focus_on=1)
>>> adder2(circ)
      ┏━━━┓
q0: ──┨ H ┠───■─────────────────────
      ┗━━━┛   ┃
            ┏━┻━┓ ╔═════════════╗
q1: ────────┨╺╋╸┠─╢ BFC(p=1/10) ╟───
            ┗━━━┛ ╚═════════════╝