Source code for mimiqcircuits.operations.gates.standard.cswap

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import mimiqcircuits.operations.control as mctrl
from mimiqcircuits.operations.gates.standard.swap import GateSWAP
from mimiqcircuits.operations.gates.standard.cpauli import GateCX
from mimiqcircuits.operations.gates.standard.cnx import GateCCX


[docs] class GateCSWAP(mctrl.Control): r"""Three qubit Controlled-SWAP gate. By convention, the first qubit is the control and last two are the targets. Examples: >>> from mimiqcircuits import * >>> GateCSWAP(), GateCSWAP().num_controls, GateCSWAP().num_targets, GateCSWAP().num_qubits (CSWAP, 1, 2, 3) >>> GateCSWAP().matrix() [1.0, 0, 0, 0, 0, 0, 0, 0] [0, 1.0, 0, 0, 0, 0, 0, 0] [0, 0, 1.0, 0, 0, 0, 0, 0] [0, 0, 0, 1.0, 0, 0, 0, 0] [0, 0, 0, 0, 1.0, 0, 0, 0] [0, 0, 0, 0, 0, 0, 1.0, 0] [0, 0, 0, 0, 0, 1.0, 0, 0] [0, 0, 0, 0, 0, 0, 0, 1.0] <BLANKLINE> >>> c = Circuit().push(GateCSWAP(), 0, 1, 2) >>> GateCSWAP().power(2), GateCSWAP().inverse() (C(⨷ ² ID), CSWAP) >>> c = Circuit().push(GateCSWAP(), 0, 1, 2) >>> c 3-qubit circuit with 1 instructions: └── CSWAP @ q[0], q[1,2] <BLANKLINE> >>> GateCSWAP().power(2), GateCSWAP().inverse() (C(⨷ ² ID), CSWAP) >>> GateCSWAP().decompose() 3-qubit circuit with 3 instructions: ├── CX @ q[2], q[1] ├── C₂X @ q[0,1], q[2] └── CX @ q[2], q[1] <BLANKLINE> """ def __init__(self): super().__init__(1, GateSWAP()) def _decompose(self, circ, qubits, bits, zvars): c, t1, t2 = qubits circ.push(GateCX(), t2, t1) circ.push(GateCCX(), c, t1, t2) circ.push(GateCX(), t2, t1) return circ