Python QuantumCircuit.u2方法代码示例

# 需要导入模块: from qiskit import QuantumCircuit [as 别名]
# 或者: from qiskit.QuantumCircuit import u2 [as 别名]

#.........这里部分代码省略.........
        self.circuit.u1(1, self.q[1])
        self.assertResult(U1Gate, 'u1(1) q[1];', 'u1(-1) q[1];')

    def test_u1_invalid(self):
        c = self.circuit
        # CHECKME? self.assertRaises(QISKitError, c.u1, self.c[0], self.q[0])
        self.assertRaises(QISKitError, c.u1, self.c[0], self.c[1])
        self.assertRaises(QISKitError, c.u1, self.q[1], 0)
        self.assertRaises(QISKitError, c.u1, 0, self.c[0])
        self.assertRaises(QISKitError, c.u1, 0, 0)
        # TODO self.assertRaises(QISKitError, c.u1, self.q[2], self.q[1])
        self.assertRaises(QISKitError, c.u1, 0, (self.q, 3))
        self.assertRaises(QISKitError, c.u1, 0, self.c)
        # TODO self.assertRaises(QISKitError, c.u1, 'a', self.q[1])
        self.assertRaises(QISKitError, c.u1, 0, 'a')

    def test_u1_reg(self):
        qasm_txt = 'u1(1) q[0];\nu1(1) q[1];\nu1(1) q[2];'
        instruction_set = self.circuit.u1(1, self.q)
        self.assertStmtsType(instruction_set.instructions, U1Gate)
        self.assertQasm(qasm_txt)

    def test_u1_reg_inv(self):
        qasm_txt = 'u1(-1) q[0];\nu1(-1) q[1];\nu1(-1) q[2];'
        instruction_set = self.circuit.u1(1, self.q).inverse()
        self.assertStmtsType(instruction_set.instructions, U1Gate)
        self.assertQasm(qasm_txt)

    def test_u1_pi(self):
        c = self.circuit
        c.u1(pi / 2, self.q[1])
        self.assertResult(U1Gate, 'u1(pi/2) q[1];', 'u1(-pi/2) q[1];')

    def test_u2(self):
        self.circuit.u2(1, 2, self.q[1])
        self.assertResult(U2Gate, 'u2(1,2) q[1];', 'u2(-pi - 2,-1 + pi) q[1];')

    def test_u2_invalid(self):
        c = self.circuit
        # CHECKME? self.assertRaises(QISKitError, c.u2, 0, self.c[0], self.q[0])
        self.assertRaises(QISKitError, c.u2, 0, self.c[0], self.c[1])
        self.assertRaises(QISKitError, c.u2, 0, self.q[1], 0)
        self.assertRaises(QISKitError, c.u2, 0, 0, self.c[0])
        self.assertRaises(QISKitError, c.u2, 0, 0, 0)
        # TODO self.assertRaises(QISKitError, c.u2, 0, self.q[2], self.q[1])
        self.assertRaises(QISKitError, c.u2, 0, 0, (self.q, 3))
        self.assertRaises(QISKitError, c.u2, 0, 0, self.c)
        # TODO self.assertRaises(QISKitError, c.u2, 0, 'a', self.q[1])
        self.assertRaises(QISKitError, c.u2, 0, 0, 'a')

    def test_u2_reg(self):
        qasm_txt = 'u2(1,2) q[0];\nu2(1,2) q[1];\nu2(1,2) q[2];'
        instruction_set = self.circuit.u2(1, 2, self.q)
        self.assertStmtsType(instruction_set.instructions, U2Gate)
        self.assertQasm(qasm_txt)

    def test_u2_reg_inv(self):
        qasm_txt = 'u2(-pi - 2,-1 + pi) q[0];\nu2(-pi - 2,-1 + pi) q[1];\nu2(-pi - 2,-1 + pi) q[2];'
        instruction_set = self.circuit.u2(1, 2, self.q).inverse()
        self.assertStmtsType(instruction_set.instructions, U2Gate)
        self.assertQasm(qasm_txt)

    def test_u2_pi(self):
        c = self.circuit
        c.u2(pi / 2, 0.3 * pi, self.q[1])
        self.assertResult(U2Gate, 'u2(pi/2,0.3*pi) q[1];', 'u2(-1.3*pi,pi/2) q[1];')

# 需要导入模块: from qiskit import QuantumCircuit [as 别名]
# 或者: from qiskit.QuantumCircuit import u2 [as 别名]
class CircuitBackend(UnrollerBackend):
    """Backend for the unroller that produces a QuantumCircuit.

    By default, basis gates are the QX gates.
    """

    def __init__(self, basis=None):
        """Setup this backend.

        basis is a list of operation name strings.
        """
        super().__init__(basis)
        self.creg = None
        self.cval = None
        if basis:
            self.basis = basis
        else:
            self.basis = ["cx", "u1", "u2", "u3"]
        self.gates = {}
        self.listen = True
        self.in_gate = ""
        self.circuit = QuantumCircuit()

    def set_basis(self, basis):
        """Declare the set of user-defined gates to emit.

        basis is a list of operation name strings.
        """
        self.basis = basis

    def version(self, version):
        """Ignore the version string.

        v is a version number.
        """
        pass

    def new_qreg(self, name, size):
        """Create a new quantum register.

        name = name of the register
        sz = size of the register
        """
        assert size >= 0, "invalid qreg size"
        q_register = QuantumRegister(size, name)
        self.circuit.add(q_register)

    def new_creg(self, name, size):
        """Create a new classical register.

        name = name of the register
        sz = size of the register
        """
        assert size >= 0, "invalid creg size"
        c_register = ClassicalRegister(size, name)
        self.circuit.add(c_register)

    def define_gate(self, name, gatedata):
        """Define a new quantum gate.

        We don't check that the definition and name agree.

        name is a string.
        gatedata is the AST node for the gate.
        """
        self.gates[name] = gatedata

    def _map_qubit(self, qubit):
        """Map qubit tuple (regname, index) to (QuantumRegister, index)."""
        qregs = self.circuit.get_qregs()
        if qubit[0] not in qregs:
            raise BackendError("qreg %s does not exist" % qubit[0])
        return (qregs[qubit[0]], qubit[1])

    def _map_bit(self, bit):
        """Map bit tuple (regname, index) to (ClassicalRegister, index)."""
        cregs = self.circuit.get_cregs()
        if bit[0] not in cregs:
            raise BackendError("creg %s does not exist" % bit[0])
        return (cregs[bit[0]], bit[1])

    def _map_creg(self, creg):
        """Map creg name to ClassicalRegister."""
        cregs = self.circuit.get_cregs()
        if creg not in cregs:
            raise BackendError("creg %s does not exist" % creg)
        return cregs[creg]

    def u(self, arg, qubit, nested_scope=None):
        """Fundamental single qubit gate.

        arg is 3-tuple of Node expression objects.
        qubit is (regname,idx) tuple.
        nested_scope is a list of dictionaries mapping expression variables
        to Node expression objects in order of increasing nesting depth.
        """
        if self.listen:
            if "U" not in self.basis:
                self.basis.append("U")

#.........这里部分代码省略.........