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figured out toffoligit add .!

This commit is contained in:
Daniel Tsvetkov 2020-03-28 22:49:33 +01:00
parent b98ffcb396
commit 0d1608f819
1 changed files with 33 additions and 9 deletions
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42
lib.py
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@ -643,20 +643,24 @@ class UnitaryOperator(LinearTransformation, UnitaryMatrix):
assert 1 <= len(which_qbit) < total_qbits
assert len(which_qbit) == len(self.partials)
assert all([q < total_qbits for q in which_qbit])
extended_m, next_partial = [[], []], 0
this_gate_len = 2**(len(self.partials) - 1)
bins = generate_bins(this_gate_len)
extended_m, next_partial = [[] for _ in bins], 0
for qbit in range(total_qbits):
if qbit not in which_qbit:
extended_m[0].append(I)
extended_m[1].append(I)
for i in range(this_gate_len):
extended_m[i].append(I)
else:
this_partial = self.partials[next_partial]
# TODO: This works only with C_partial :(((
if this_partial == C_partial:
extended_m[0].append(s("|0><0|"))
extended_m[1].append(s("|1><1|"))
for i in range(this_gate_len):
bin_dig = bins[i][next_partial]
extended_m[i].append(s("|" + bin_dig + "><" + bin_dig + "|"))
else:
extended_m[0].append(I)
extended_m[1].append(this_partial)
for i in range(this_gate_len - 1):
extended_m[i].append(I)
extended_m[-1].append(this_partial)
next_partial += 1
new_m = sum([np.prod(e).m for e in extended_m])
else:
@ -842,6 +846,12 @@ T = lambda phi: Gate([[1, 0],
# np.kron(np.outer(_0.m, _0.m), np.eye(2)) + np.kron(np.outer(_1.m, _1.m), X.m)
# _0.x(_0) * Matrix(I.m) + _1.x(_1) * Matrix(X.m)
# Additionally for Toffoli: on a 4qubit system with C-CX (qbits 0,2,3)
# s("|0><0|") * I * s("|0><0|") * I \
# + s("|0><0|") * I * s("|1><1|") * I \
# + s("|1><1|") * I * s("|0><0|") * I \
# + s("|1><1|") * I * s("|1><1|") * X
C_partial = Gate(I.m, name="C")
x_partial = Gate(X.m, name=REPR_TARGET)
@ -988,17 +998,22 @@ def test_partials():
"Operating dim-4 operator on a dim-8 state. Please specify "
"which_qubit to operate on",
CNOT.on, s("|100>"))
# apply on 0, 1 of 3qbit state
assert CNOT.on(s("|000>"), which_qbit=[0, 1]) == s("|000>")
assert CNOT.on(s("|100>"), which_qbit=[0, 1]) == s("|110>")
# apply on 1, 2 of 3qbit state
assert CNOT.on(s("|000>"), which_qbit=[1, 2]) == s("|000>")
assert CNOT.on(s("|010>"), which_qbit=[1, 2]) == s("|011>")
# apply on 0, 2 of 3qbit state
assert CNOT.on(s("|000>"), which_qbit=[0, 2]) == s("|000>")
assert CNOT.on(s("|100>"), which_qbit=[0, 2]) == s("|101>")
# apply on 0, 2 of 4qbit state
assert CNOT.on(s("|1000>"), which_qbit=[0, 2]) == s("|1010>")
# apply on 0, 3 of 4qbit state
assert CNOT.on(s("|1000>"), which_qbit=[0, 3]) == s("|1001>")
@ -1008,8 +1023,17 @@ def test_partials():
assert TOFF.on(s("|110>")) == s("|111>")
assert TOFF.on(s("|111>")) == s("|110>")
# TODO: This doesn't work :(((
# assert TOFF.on(s("|1100>"), which_qbit=[0, 1, 3]) == s("|1101>")
# controls on 0, 1 target on 3 for 4
assert TOFF.on(s("|1100>"), which_qbit=[0, 1, 3]) == s("|1101>")
# controls on 0, 2 target on 3 for 4
assert TOFF.on(s("|1010>"), which_qbit=[0, 2, 3]) == s("|1011>")
assert TOFF.on(s("|1011>"), which_qbit=[0, 2, 3]) == s("|1010>")
assert TOFF.on(s("|1111>"), which_qbit=[0, 2, 3]) == s("|1110>")
# controls on 0, 2 target on 4 for 5
assert TOFF.on(s("|10101>"), which_qbit=[0, 2, 4]) == s("|10100>")
assert TOFF.on(s("|10111>"), which_qbit=[0, 2, 4]) == s("|10110>")
assert TOFF.on(s("|11111>"), which_qbit=[0, 2, 4]) == s("|11110>")
assert TOFF.on(s("|10100>"), which_qbit=[0, 2, 4]) == s("|10101>")
def test():