I was wondering if there is a way to compose a program with multiple quantum circuits without having the register reinitialized at $0$ for each circuit.
Specifically, I would like run a second quantum circuit after running the first one, as in this example:
qp = QuantumProgram()
qr = qp.create_quantum_register('qr',2)
cr = qp.create_classical_register('cr',2)
qc1 = qp.create_circuit('B1',[qr],[cr])
qc1.x(qr)
qc1.measure(qr[0], cr[0])
qc1.measure(qr[1], cr[1])
qc2 = qp.create_circuit('B2', [qr], [cr])
qc2.x(qr)
qc2.measure(qr[0], cr[0])
qc2.measure(qr[1], cr[1])
#qp.add_circuit('B1', qc1)
#qp.add_circuit('B2', qc2)
pprint(qp.get_qasms())
result = qp.execute()
print(result.get_counts('B1'))
print(result.get_counts('B2'))
Unfortunately, what I get is the same result for the two runs (i.e. a count of 11
for the B1
and B2
instead of 11
and 00
for the second, as if B2
is run on a completely new state initialized on 00
after B1
.