Bell State Preparation - Classiq Docs

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The prepare_bell_state function creates one of the four Bell states

\phi_{+} = \frac{1}{2} \left(|00\rangle + |11\rangle \right)

\phi_{-} = \frac{1}{2} \left(|00\rangle - |11\rangle \right)

\psi_{+} = \frac{1}{2} \left(|01\rangle + |10\rangle \right)

\psi_{-} = \frac{1}{2} \left(|01\rangle - |10\rangle \right)

Function: prepare_bell_state Arguments:

state_num: CInt
q: Output[QArray[QBit]]

Example

The prepare_bell_state function creates

\psi_{+} = \frac{1}{2} \left(|01\rangle + |10\rangle \right)

state_num is set to 2

from classiq import *


@qfunc
def main(x: Output[QArray[QBit]]):
    prepare_bell_state(2, x)


qprog = synthesize(main)