qrisp.jasp.Jaspr.control#

Jaspr.control(num_ctrl, ctrl_state=-1)[source]#

Returns the controlled version of the Jaspr. The control qubits are added to the signature of the Jaspr as the arguments after the QuantumCircuit.

Parameters:

num_ctrlint: The amount of controls to be added.
ctrl_stateint of str, optional: The control state on which to activate. The default is -1.

Returns:

Jaspr: The controlled Jaspr.

Examples

We create a simple script and inspect the controlled version:

from qrisp import *
from qrisp.jasp import make_jaspr

def example_function(i):

    qv = QuantumVariable(i)
    cx(qv[0], qv[1])
    t(qv[1])
    return qv

jaspr = make_jaspr(example_function)(2)

print(jaspr.control(2))
# Yields
# { lambda ; a:QuantumCircuit b:Qubit c:Qubit d:i32[]. let
#     e:QuantumCircuit f:QubitArray = create_qubits a 1
#     g:Qubit = get_qubit f 0
#     h:QuantumCircuit = ccx e b c g
#     i:QuantumCircuit j:QubitArray = create_qubits h d
#     k:Qubit = get_qubit j 0
#     l:Qubit = get_qubit j 1
#     m:QuantumCircuit = ccx i g k l
#     n:QuantumCircuit = ct m g l
#     o:QuantumCircuit = ccx n b c g
#   in (o, j) }

We see that the control qubits are part of the function signature (a and b)