mimiqcircuits.operations.gates.standard.cswap

Controlled-SWAP (Fredkin) gate.

Classes

GateCSWAP([num_controls, operation])

Three qubit Controlled-SWAP gate.

class mimiqcircuits.operations.gates.standard.cswap.GateCSWAP(num_controls=None, operation=None, *args, **kwargs)

Bases: Control

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]

>>> 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 instruction:
└── CSWAP @ q[0], q[1:2]

>>> 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]

__init__(num_controls=1, operation=None)

Initialize a CSWAP gate.