qat.lang.vendors.ZZ

qat.lang.vendors.ZZ

Definition of the \(ZZ\) gate (of arity \(2\)). This gate is not included in the default gate set of myQLM, but in the gate set quobly_gate_set(), in the gate set ionq_gate_set().

Apply gate

from qat.lang import qrout
from qat.lang.vendors import ZZ

@qrout
def circ():
    ZZ(0, 1)

Control gate

from qat.lang import qrout
from qat.lang.vendors import ZZ

@qrout
def ctrl_circ():
    ZZ.ctrl()(0, 1, 2)

Multi-controlled gate

from qat.lang import qrout
from qat.lang.vendors import ZZ

@qrout
def multi_ctrl_circ():
    ZZ.ctrl(2)(0, 1, 2, 3)

Reverse gate

from qat.lang import qrout
from qat.lang.vendors import ZZ

@qrout
def reversed_circ():
    ZZ.dag()(0, 1)

This \(ZZ\) gate is defined by:

\[\begin{split}\begin{vmatrix} 1 & 0 & 0 & 0 \\ 0 & i & 0 & 0 \\ 0 & 0 & i & 0 \\ 0 & 0 & 0 & 1 \\ \end{vmatrix}\end{split}\]