Python QubitWaveFunction.from_string Exemples

Exemple #1

def test_simple_trace_out():
    H1 = QubitHamiltonian.from_string("1.0*Z(0)*Z(1)")
    H2 = QubitHamiltonian.from_string("1.0*Z(0)")
    assert H2 == H1.trace_out_qubits(qubits=[1], states=None)

    H1 = QubitHamiltonian.from_string("1.0*Z(0)*Z(1)X(100)")
    H2 = QubitHamiltonian.from_string("1.0*Z(1)X(100)")
    assert H2 == H1.trace_out_qubits(qubits=[0], states=None)

    H1 = QubitHamiltonian.from_string("1.0*Z(0)*Z(1)X(100)")
    H2 = QubitHamiltonian.from_string("-1.0*Z(0)X(100)")
    assert H2 == H1.trace_out_qubits(qubits=[1], states=[QubitWaveFunction.from_string("1.0*|1>")])

    H1 = QubitHamiltonian.from_string("1.0*Z(0)*Z(1)X(100)")
    H2 = QubitHamiltonian.from_string("-1.0*Z(1)X(100)")
    assert H2 == H1.trace_out_qubits(qubits=[0], states=[QubitWaveFunction.from_string("1.0*|1>")])

    H1 = QubitHamiltonian.from_string("1.0*X(0)*Z(1)*Z(5)*X(100)Y(50)")
    H2 = QubitHamiltonian.from_string("1.0*X(0)X(100)Y(50)")
    assert H2 == H1.trace_out_qubits(qubits=[1,5], states=[QubitWaveFunction.from_string("1.0*|1>")]*2)

    H1 = QubitHamiltonian.from_string("1.0*X(0)*Z(1)*X(100)Y(50)")
    H2 = QubitHamiltonian.from_string("-1.0*X(0)X(100)Y(50)")
    assert H2 == H1.trace_out_qubits(qubits=[1,5], states=[QubitWaveFunction.from_string("1.0*|1>")]*2)

Exemple #2

Fichier : test_hamiltonian_arithmetic.py Projet : akpc/margarita

def test_ketbra():
    ket = QubitWaveFunction.from_string("1.0*|00> + 1.0*|11>").normalize()
    operator = paulis.KetBra(ket=ket, bra="|00>")
    result = operator * QubitWaveFunction.from_int(0, n_qubits=2)
    assert (result == ket)