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]