class QC():
'''
class QC
'''
# pylint: disable=too-many-instance-attributes
def __init__(self, backend='local_qasm_simulator', remote=False, qubits=3):
# private member
# __qp
self.__qp = None
# calc phase
self.phase = [
['0', 'initialized.']
]
# config
self.backend = backend
self.remote = remote
self.qubits = qubits
# circuits variable
self.shots = 2
# async
self.wait = False
self.last = ['init', 'None']
self.load()
def load(self, api_info=True):
'''
load
'''
self.__qp = QuantumProgram()
if self.remote:
try:
import Qconfig
self.__qp.set_api(Qconfig.APItoken, Qconfig.config["url"],
hub=Qconfig.config["hub"],
group=Qconfig.config["group"],
project=Qconfig.config["project"])
except ImportError as ex:
msg = 'Error in loading Qconfig.py!. Error = {}\n'.format(ex)
sys.stdout.write(msg)
sys.stdout.flush()
return False
if api_info is True:
api = self.__qp.get_api()
sys.stdout.write('<IBM Quantum Experience API information>\n')
sys.stdout.flush()
sys.stdout.write('Version: {0}\n'.format(api.api_version()))
sys.stdout.write('User jobs (last 5):\n')
jobs = api.get_jobs(limit=500)
def format_date(job_item):
'''
format
'''
return datetime.strptime(job_item['creationDate'],
'%Y-%m-%dT%H:%M:%S.%fZ')
sortedjobs = sorted(jobs,
key=format_date)
sys.stdout.write(' {0:<32} {1:<24} {2:<9} {3}\n'
.format('id',
'creationDate',
'status',
'backend'))
sys.stdout.write('{:-^94}\n'.format(""))
for job in sortedjobs[-5:]:
sys.stdout.write(' {0:<32} {1:<24} {2:<9} {3}\n'
.format(job['id'],
job['creationDate'],
job['status'],
job['backend']['name']))
sys.stdout.write('There are {0} jobs on the server\n'
.format(len(jobs)))
sys.stdout.write('Credits: {0}\n'
.format(api.get_my_credits()))
sys.stdout.flush()
self.backends = self.__qp.available_backends()
status = self.__qp.get_backend_status(self.backend)
if 'available' in status:
if status['available'] is False:
return False
return True
def set_config(self, config=None):
'''
set config
'''
if config is None:
config = {}
if 'backend' in config:
self.backend = str(config['backend'])
if 'local_' in self.backend:
self.remote = False
else:
self.remote = True
if 'remote' in config:
self.remote = config['remote']
if 'qubits' in config:
self.qubits = int(config['qubits'])
return True
def _progress(self, phasename, text):
self.phase.append([str(phasename), str(text)])
text = "Phase {0}: {1}".format(phasename, text)
sys.stdout.write("{}\n".format(text))
sys.stdout.flush()
def _init_circuit(self):
self._progress('1', 'Initialize quantum registers and circuit')
qubits = self.qubits
quantum_registers = [
{"name": "cin", "size": 1},
{"name": "qa", "size": qubits},
{"name": "qb", "size": qubits},
{"name": "cout", "size": 1}
]
classical_registers = [
{"name": "ans", "size": qubits + 1}
]
if 'cin' in self.__qp.get_quantum_register_names():
self.__qp.destroy_quantum_registers(quantum_registers)
self.__qp.destroy_classical_registers(classical_registers)
q_r = self.__qp.create_quantum_registers(quantum_registers)
c_r = self.__qp.create_classical_registers(classical_registers)
self.__qp.create_circuit("qcirc", q_r, c_r)
def _create_circuit_qadd(self):
# quantum ripple-carry adder from Cuccaro et al, quant-ph/0410184
def majority(circuit, q_a, q_b, q_c):
'''
majority
'''
circuit.cx(q_c, q_b)
circuit.cx(q_c, q_a)
circuit.ccx(q_a, q_b, q_c)
def unmaj(circuit, q_a, q_b, q_c):
'''
unmajority
'''
circuit.ccx(q_a, q_b, q_c)
circuit.cx(q_c, q_a)
circuit.cx(q_a, q_b)
def adder(circuit, c_in, q_a, q_b, c_out, qubits):
'''
adder
'''
# pylint: disable=too-many-arguments
majority(circuit, c_in[0], q_b[0], q_a[0])
for i in range(qubits - 1):
majority(circuit, q_a[i], q_b[i + 1], q_a[i + 1])
circuit.cx(q_a[qubits - 1], c_out[0])
for i in range(qubits - 1)[::-1]:
unmaj(circuit, q_a[i], q_b[i + 1], q_a[i + 1])
unmaj(circuit, c_in[0], q_b[0], q_a[0])
if 'add' not in self.__qp.get_circuit_names():
[c_in, q_a, q_b, c_out] = map(self.__qp.get_quantum_register,
["cin", "qa", "qb", "cout"])
ans = self.__qp.get_classical_register('ans')
qadder = self.__qp.create_circuit("qadd",
[c_in, q_a, q_b, c_out],
[ans])
adder(qadder, c_in, q_a, q_b, c_out, self.qubits)
return 'add' in self.__qp.get_circuit_names()
def _create_circuit_qsub(self):
circuit_names = self.__qp.get_circuit_names()
if 'qsub' not in circuit_names:
if 'qadd' not in circuit_names:
self._create_circuit_qadd()
# subtractor circuit
self.__qp.add_circuit('qsub', self.__qp.get_circuit('qadd'))
qsubtractor = self.__qp.get_circuit('qsub')
qsubtractor.reverse()
return 'qsub' in self.__qp.get_circuit_names()
def _qadd(self, input_a, input_b=None, subtract=False, observe=False):
# pylint: disable=too-many-locals
def measure(circuit, q_b, c_out, ans):
'''
measure
'''
circuit.barrier()
for i in range(self.qubits):
circuit.measure(q_b[i], ans[i])
circuit.measure(c_out[0], ans[self.qubits])
def char2q(circuit, cbit, qbit):
'''
char2q
'''
if cbit == '1':
circuit.x(qbit)
elif cbit == 'H':
circuit.h(qbit)
self.shots = 5 * (2**self.qubits)
def input_state(circuit, input_a, input_b=None):
'''
input state
'''
input_a = input_a[::-1]
for i in range(self.qubits):
char2q(circuit, input_a[i], q_a[i])
if input_b is not None:
input_b = input_b[::-1]
for i in range(self.qubits):
char2q(circuit, input_b[i], q_b[i])
def reset_input(circuit, c_in, q_a, c_out):
'''
reset input
'''
circuit.reset(c_in)
circuit.reset(c_out)
for i in range(self.qubits):
circuit.reset(q_a[i])
# get registers
[c_in, q_a, q_b, c_out] = map(self.__qp.get_quantum_register,
["cin", "qa", "qb", "cout"])
ans = self.__qp.get_classical_register('ans')
qcirc = self.__qp.get_circuit('qcirc')
self._progress('2',
'Define input state ({})'
.format('QADD' if subtract is False else 'QSUB'))
if input_b is not None:
if subtract is True:
# subtract
input_state(qcirc, input_b, input_a)
else:
# add
input_state(qcirc, input_a, input_b)
else:
reset_input(qcirc, c_in, q_a, c_out)
input_state(qcirc, input_a)
self._progress('3',
'Define quantum circuit ({})'
.format('QADD' if subtract is False else 'QSUB'))
if subtract is True:
self._create_circuit_qsub()
qcirc.extend(self.__qp.get_circuit('qsub'))
else:
self._create_circuit_qadd()
qcirc.extend(self.__qp.get_circuit('qadd'))
if observe is True:
measure(qcirc, q_b, c_out, ans)
def _qsub(self, input_a, input_b=None, observe=False):
self._qadd(input_a, input_b, subtract=True, observe=observe)
def _qope(self, input_a, operator, input_b=None, observe=False):
if operator == '+':
return self._qadd(input_a, input_b, observe=observe)
elif operator == '-':
return self._qsub(input_a, input_b, observe=observe)
return None
def _compile(self, name, cross_backend=None, print_qasm=False):
self._progress('4', 'Compile quantum circuit')
coupling_map = None
if cross_backend is not None:
backend_conf = self.__qp.get_backend_configuration(cross_backend)
coupling_map = backend_conf.get('coupling_map', None)
if coupling_map is None:
sys.stdout.write('backend: {} coupling_map not found'
.format(cross_backend))
qobj = self.__qp.compile([name],
backend=self.backend,
shots=self.shots,
seed=1,
coupling_map=coupling_map)
if print_qasm is True:
sys.stdout.write(self.__qp.get_compiled_qasm(qobj, 'qcirc'))
sys.stdout.flush()
return qobj
def _run(self, qobj):
self._progress('5', 'Run quantum circuit (wait for answer)')
result = self.__qp.run(qobj, wait=5, timeout=100000)
return result
def _run_async(self, qobj):
'''
_run_async
'''
self._progress('5', 'Run quantum circuit')
self.wait = True
def async_result(result):
'''
async call back
'''
self.wait = False
self.last = self.result_parse(result)
self.__qp.run_async(qobj,
wait=5, timeout=100000, callback=async_result)
def _is_regular_number(self, numstring, base):
'''
returns input binary format string or None.
'''
if base == 'bin':
binstring = numstring
elif base == 'dec':
if numstring == 'H':
binstring = 'H'*self.qubits
else:
binstring = format(int(numstring), "0{}b".format(self.qubits))
if len(binstring) != self.qubits:
return None
return binstring
def get_seq(self, text, base='dec'):
'''
convert seq and check it
if text is invalid, return the list of length 0.
'''
operators = u'(\\+|\\-)'
seq = re.split(operators, text)
# length check
if len(seq) % 2 == 0 or len(seq) == 1:
return []
# regex
if base == 'bin':
regex = re.compile(r'[01H]+')
else:
regex = re.compile(r'(^(?!.H)[0-9]+|H)')
for i in range(0, len(seq), 2):
match = regex.match(seq[i])
if match is None:
return []
num = match.group(0)
seq[i] = self._is_regular_number(num, base)
if seq[i] is None:
return []
return seq
def result_parse(self, result):
'''
result_parse
'''
data = result.get_data("qcirc")
sys.stdout.write("job id: {0}\n".format(result.get_job_id()))
sys.stdout.write("raw result: {0}\n".format(data))
sys.stdout.write("{:=^40}\n".format("answer"))
counts = data['counts']
sortedcounts = sorted(counts.items(),
key=lambda x: -x[1])
sortedans = []
for count in sortedcounts:
if count[0][0] == '1':
ans = 'OR'
else:
ans = str(int(count[0][-self.qubits:], 2))
sortedans.append(ans)
sys.stdout.write('Dec: {0:>2} Bin: {1} Count: {2} \n'
.format(ans, str(count[0]), str(count[1])))
sys.stdout.write('{0:d} answer{1}\n'
.format(len(sortedans),
'' if len(sortedans) == 1 else 's'))
sys.stdout.write("{:=^40}\n".format(""))
if 'time' in data:
sys.stdout.write("time: {0:<3} sec\n".format(data['time']))
sys.stdout.write("All process done.\n")
sys.stdout.flush()
uniqanswer = sorted(set(sortedans), key=sortedans.index)
ans = ",".join(uniqanswer)
return [str(result), ans]
def exec_calc(self, text, base='dec', wait_result=False):
'''
exec_calc
'''
seq = self.get_seq(text, base)
print('QC seq:', seq)
if seq == []:
return ["Syntax error", None]
# fail message
fail_msg = None
try:
self._init_circuit()
numbers = seq[0::2] # slice even index
i = 1
observe = False
for oper in seq[1::2]: # slice odd index
if i == len(numbers) - 1:
observe = True
if i == 1:
self._qope(numbers[0], oper, numbers[1], observe=observe)
else:
self._qope(numbers[i], oper, observe=observe)
i = i + 1
qobj = self._compile('qcirc')
if wait_result is True:
[status, ans] = self.result_parse(self._run(qobj))
else:
self._run_async(qobj)
[status, ans] = [
'Wait. Calculating on {0}'.format(self.backend),
'...'
]
except QISKitError as ex:
fail_msg = ('There was an error in the circuit!. Error = {}\n'
.format(ex))
except RegisterSizeError as ex:
fail_msg = ('Error in the number of registers!. Error = {}\n'
.format(ex))
if fail_msg is not None:
sys.stdout.write(fail_msg)
sys.stdout.flush()
return ["FAIL", None]
return [status, ans]
