def testQFTGateSequenceWithSwapping(self):
"""
qft: Inspect swap gates added to gate sequences if
swapping is enabled.
"""
for N in range(1, 6):
circuit = qft_gate_sequence(N, swapping=True)
phases = int(N * (N + 1) / 2)
swaps = int(N // 2)
assert_equal(len(circuit.gates), phases + swaps)
for i in range(phases, phases + swaps):
assert_string_equal(circuit.gates[i].name, "SWAP")
def testQFTGateSequenceWithSwapping(self):
"""
qft: Inspect swap gates added to gate sequences if
swapping is enabled.
"""
for N in range(1, 6):
circuit = qft_gate_sequence(N, swapping=True)
phases = int(N * (N + 1) / 2)
swaps = int(N // 2)
assert_equal(len(circuit.gates), phases + swaps)
for i in range(phases, phases + swaps):
assert_string_equal(circuit.gates[i].name, "SWAP")
def testQFTGateSequenceNoSwapping(self):
"""
qft: Inspect key properties of gate sequences of length N,
with swapping disabled.
"""
for N in range(1, 6):
circuit = qft_gate_sequence(N, swapping=False)
assert_equal(circuit.N, N)
totsize = N * (N + 1) / 2
assert_equal(len(circuit.gates), totsize)
snots = sum(g.name == "SNOT" for g in circuit.gates)
assert_equal(snots, N)
phases = sum(g.name == "CPHASE" for g in circuit.gates)
assert_equal(phases, N * (N - 1) / 2)
def testQFTGateSequenceNoSwapping(self):
"""
qft: Inspect key properties of gate sequences of length N,
with swapping disabled.
"""
for N in range(1, 6):
circuit = qft_gate_sequence(N, swapping=False)
assert_equal(circuit.N, N)
totsize = N * (N + 1) / 2
assert_equal(len(circuit.gates), totsize)
snots = sum(g.name == "SNOT" for g in circuit.gates)
assert_equal(snots, N)
phases = sum(g.name == "CPHASE" for g in circuit.gates)
assert_equal(phases, N * (N - 1) / 2)