本文整理匯總了Python中qiskit.QuantumCircuit.get_qregs方法的典型用法代碼示例。如果您正苦於以下問題：Python QuantumCircuit.get_qregs方法的具體用法？Python QuantumCircuit.get_qregs怎麽用？Python QuantumCircuit.get_qregs使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類qiskit.QuantumCircuit的用法示例。
在下文中一共展示了QuantumCircuit.get_qregs方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: CircuitBackend
# 需要導入模塊: from qiskit import QuantumCircuit [as 別名]
# 或者: from qiskit.QuantumCircuit import get_qregs [as 別名]
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")
#.........這裏部分代碼省略.........