def testExpandGate2toNSwap(self):
"""
gates: expand 2 to N (using swap)
"""
a, b = np.random.rand(), np.random.rand()
k1 = (a * basis(2, 0) + b * basis(2, 1)).unit()
c, d = np.random.rand(), np.random.rand()
k2 = (c * basis(2, 0) + d * basis(2, 1)).unit()
N = 6
kets = [rand_ket(2) for k in range(N)]
for m in range(N):
for n in set(range(N)) - {m}:
psi_in = tensor([k1 if k == m else k2 if k == n else kets[k]
for k in range(N)])
psi_out = tensor([k2 if k == m else k1 if k == n else kets[k]
for k in range(N)])
targets = [m, n]
G = swap(N, targets)
psi_out = G * psi_in
assert_((psi_out - G * psi_in).norm() < 1e-12)
def testExpandGate2toNSwap(self):
"""
gates: expand 2 to N (using swap)
"""
a, b = np.random.rand(), np.random.rand()
k1 = (a * basis(2, 0) + b * basis(2, 1)).unit()
c, d = np.random.rand(), np.random.rand()
k2 = (c * basis(2, 0) + d * basis(2, 1)).unit()
N = 6
kets = [rand_ket(2) for k in range(N)]
for m in range(N):
for n in set(range(N)) - {m}:
psi_in = tensor([
k1 if k == m else k2 if k == n else kets[k]
for k in range(N)
])
psi_out = tensor([
k2 if k == m else k1 if k == n else kets[k]
for k in range(N)
])
targets = [m, n]
G = swap(N, targets)
psi_out = G * psi_in
assert_((psi_out - G * psi_in).norm() < 1e-12)
def testSwapGate(self):
"""
gates: swap gate
"""
a, b = np.random.rand(), np.random.rand()
psi1 = (a * basis(2, 0) + b * basis(2, 1)).unit()
c, d = np.random.rand(), np.random.rand()
psi2 = (c * basis(2, 0) + d * basis(2, 1)).unit()
psi_in = tensor(psi1, psi2)
psi_out = tensor(psi2, psi1)
psi_res = swap() * psi_in
assert_((psi_out - psi_res).norm() < 1e-12)
psi_res = swap() * swap() * psi_in
assert_((psi_in - psi_res).norm() < 1e-12)
def testSwapGate(self):
"""
gates: swap gate
"""
a, b = np.random.rand(), np.random.rand()
psi1 = (a * basis(2, 0) + b * basis(2, 1)).unit()
c, d = np.random.rand(), np.random.rand()
psi2 = (c * basis(2, 0) + d * basis(2, 1)).unit()
psi_in = tensor(psi1, psi2)
psi_out = tensor(psi2, psi1)
psi_res = swap() * psi_in
assert_((psi_out - psi_res).norm() < 1e-12)
psi_res = swap() * swap() * psi_in
assert_((psi_in - psi_res).norm() < 1e-12)