def main(): a = random.uniform(0.0, 1.0) b = random.uniform(0.0, 1.0) phi = random.uniform(0.0, 1.0) print("a,b = {0:.4f}, {1:.4f}".format(a,b)) print("phi = {0:.4f}".format(phi)) print("** one-way quantum computing") # graph state qs_oneway = QState(2) qs_oneway.ry(0, phase=a).rz(0, phase=b) # input state (random) qs_oneway.h(1) qs_oneway.cz(0,1) # measurement s = qs_oneway.m([0], shots=1, angle=0.5, phase=phi) # result state qs_oneway.show([1]) print("** conventianal quantum gate") qs_gate = QState(1) qs_gate.ry(0, phase=a).rz(0, phase=b) # input state (random) qs_gate.rz(0, phase=-phi).h(0) qs_gate.show()
def main(): print("== hadamard gate ==") print("** one-way quantum computing") # graph state qs_oneway = QState(5) qs_oneway.h(1).h(2).h(3).h(4) qs_oneway.cz(0, 1).cz(1, 2).cz(2, 3).cz(3, 4) # measurement qs_oneway.mx([0], shots=1) qs_oneway.my([1], shots=1) qs_oneway.my([2], shots=1) qs_oneway.my([3], shots=1) # result state qs_oneway.show([4]) print("** conventianal quantum gate") qs_gate = QState(1) qs_gate.h(0) qs_gate.show()
def main(): print("== general rotation ==") alpha = random.uniform(0.0, 1.0) beta = random.uniform(0.0, 1.0) gamma = random.uniform(0.0, 1.0) print("(euler angle = {0:.4f}, {1:.4f}, {2:.4f})".format( alpha, beta, gamma)) print("** one-way quantum computing") # graph state qs_oneway = QState(5) qs_oneway.h(1).h(2).h(3).h(4) qs_oneway.cz(0, 1).cz(1, 2).cz(2, 3).cz(3, 4) # measurement alpha_oneway = alpha beta_oneway = beta gamma_oneway = gamma s0 = qs_oneway.m([0], shots=1, angle=0.5, phase=0.0).lst if s0 == 1: alpha_oneway = -alpha_oneway s1 = qs_oneway.m([1], shots=1, angle=0.5, phase=alpha_oneway).lst if s1 == 1: beta_oneway = -beta_oneway s2 = qs_oneway.m([2], shots=1, angle=0.5, phase=beta_oneway).lst if (s0 + s2) % 2 == 1: gamma_oneway = -gamma_oneway s3 = qs_oneway.m([3], shots=1, angle=0.5, phase=gamma_oneway).lst # result state qs_oneway.show([4]) print("** conventianal quantum gate") qs_gate = QState(1) qs_gate.rx(0, phase=alpha).rz(0, phase=beta).rx(0, phase=gamma) qs_gate.show()
def main(): print("== CNOT gate ==") print("** one-way quantum computing") # graph state qs_oneway = QState(15) qs_oneway.h(0) qs_oneway.h(1).h(2).h(3).h(4).h(5).h(6).h(7) qs_oneway.h(9).h(10).h(11).h(12).h(13).h(14) qs_oneway.cz(0, 1).cz(1, 2).cz(2, 3).cz(3, 4).cz(4, 5).cz(5, 6) qs_oneway.cz(3, 7).cz(7, 11) qs_oneway.cz(8, 9).cz(9, 10).cz(10, 11).cz(11, 12).cz(12, 13).cz(13, 14) # measurement qs_oneway.mx([0], shots=1) qs_oneway.my([1], shots=1) qs_oneway.my([2], shots=1) qs_oneway.my([3], shots=1) qs_oneway.my([4], shots=1) qs_oneway.my([5], shots=1) qs_oneway.my([7], shots=1) qs_oneway.mx([8], shots=1) qs_oneway.mx([9], shots=1) qs_oneway.mx([10], shots=1) qs_oneway.my([11], shots=1) qs_oneway.mx([12], shots=1) qs_oneway.mx([13], shots=1) qs_oneway.show([6, 14]) print("** conventianal quantum gate") qs_gate = QState(2) qs_gate.h(0) qs_gate.cx(0, 1) qs_gate.show()
def logical_zero(): anc = [0, 1, 2, 3, 4, 5, 6] # registers for ancila cod = [7, 8, 9, 10, 11, 12, 13] # registers for steane code qs_total = QState(14) # g1 qs_total.h(anc[0]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.cx(anc[0], cod[3]).cx(anc[1], cod[4]).cx(anc[2], cod[5]).cx(anc[3], cod[6]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.h(anc[0]) mval = qs_total.m(qid=[anc[0]]).last if mval == '1': qs_total.z(cod[0]).z(cod[1]).z(cod[2]).z(cod[3]) qs_total.reset(qid=anc) # g2 qs_total.h(anc[0]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.cx(anc[0], cod[1]).cx(anc[1], cod[2]).cx(anc[2], cod[5]).cx(anc[3], cod[6]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.h(anc[0]) mval = qs_total.m(qid=[anc[0]]).last if mval == '1': qs_total.z(cod[0]).z(cod[1]).z(cod[4]).z(cod[5]) qs_total.reset(qid=anc) # g3 qs_total.h(anc[0]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.cx(anc[0], cod[0]).cx(anc[1], cod[2]).cx(anc[2], cod[4]).cx(anc[3], cod[6]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.h(anc[0]) mval = qs_total.m(qid=[anc[0]]).last if mval == '1': qs_total.z(cod[2]).z(cod[4]).z(cod[6]) qs_total.reset(qid=anc) # g4 qs_total.h(anc[0]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.cz(anc[0], cod[3]).cz(anc[1], cod[4]).cz(anc[2], cod[5]).cz(anc[3], cod[6]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.h(anc[0]) mval = qs_total.m(qid=[anc[0]]).last if mval == '1': qs_total.x(cod[0]).x(cod[1]).x(cod[2]).x(cod[3]) qs_total.reset(qid=anc) # g5 qs_total.h(anc[0]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.cz(anc[0], cod[1]).cz(anc[1], cod[2]).cz(anc[2], cod[5]).cz(anc[3], cod[6]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.h(anc[0]) mval = qs_total.m(qid=[anc[0]]).last if mval == '1': qs_total.x(cod[0]).x(cod[1]).x(cod[4]).x(cod[5]) qs_total.reset(qid=anc) # g6 qs_total.h(anc[0]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.cz(anc[0], cod[0]).cz(anc[1], cod[2]).cz(anc[2], cod[4]).cz(anc[3], cod[6]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 4)] qs_total.h(anc[0]) mval = qs_total.m(qid=[anc[0]]).last if mval == '1': qs_total.x(cod[2]).x(cod[4]).x(cod[6]) qs_total.reset(qid=anc) # g7 qs_total.h(anc[0]) [qs_total.cx(anc[0], anc[i]) for i in range(1, 7)] [qs_total.cz(anc[i], cod[i]) for i in range(7)] [qs_total.cx(anc[0], anc[i]) for i in range(1, 7)] qs_total.h(anc[0]) mval = qs_total.m(qid=[anc[0]]).last if mval == '1': [qs_total.x(q) for q in cod] qs_total.reset(qid=anc) qs = qs_total.partial(qid=cod) return qs
from qlazy import QState qs = QState(3) # prepare qubit (id=0) that Alice want to send to Bob by rotating around X,Z qs.ry(0, phase=0.3).rz(0, phase=0.4) # make entangled 2 qubits (id=1 for Alice, id=2 for Bob) qs.h(1).cx(1, 2) # initial state (before teleportation) print("== Alice (initial) ==") qs.show([0]) print("== Bob (initial) ==") qs.show([2]) # equivalent to quantum teleportation qs.cx(0, 1).h(0) qs.cx(1, 2) qs.cz(0, 2) # final state (before teleportation) print("== Alice (final) ==") qs.show([0]) print("== Bob (final) ==") qs.show([2])