def testCSIGNtoCNOT(self):
"""
CSIGN to CNOT: compare unitary matrix for CSIGN and product of
resolved matrices in terms of CNOT.
"""
qc1 = QubitCircuit(2)
qc1.add_gate("CSIGN", targets=[1], controls=[0])
U1 = gate_sequence_product(qc1.propagators())
qc2 = qc1.resolve_gates(basis="CNOT")
U2 = gate_sequence_product(qc2.propagators())
assert_((U1 - U2).norm() < 1e-12)
def testCNOTtoSQRTSWAP(self):
"""
CNOT to SQRTSWAP: compare unitary matrix for CNOT and product of
resolved matrices in terms of SQRTSWAP.
"""
qc1 = QubitCircuit(2)
qc1.add_gate("CNOT", targets=[0], controls=[1])
U1 = gate_sequence_product(qc1.propagators())
qc2 = qc1.resolve_gates(basis="SQRTSWAP")
U2 = gate_sequence_product(qc2.propagators())
assert_((U1 - U2).norm() < 1e-12)
def testadjacentgates(self):
"""
Adjacent Gates: compare unitary matrix for ISWAP and product of
resolved matrices in terms of adjacent gates interaction.
"""
qc1 = QubitCircuit(3)
qc1.add_gate("ISWAP", targets=[0, 2])
U1 = gate_sequence_product(qc1.propagators())
qc0 = qc1.adjacent_gates()
qc2 = qc0.resolve_gates(basis="ISWAP")
U2 = gate_sequence_product(qc2.propagators())
assert_((U1 - U2).norm() < 1e-12)
def test_linear_SQRTISWAP(self):
"""
Linear Spin Chain Setup: compare unitary matrix for SQRTISWAP and
propogator matrix of the implemented physical model.
"""
N = 3
qc = QubitCircuit(N)
qc.add_gate("SQRTISWAP", targets=[0, 1])
U_ideal = gate_sequence_product(qc.propagators())
p = LinearSpinChain(N, correct_global_phase=True)
U_list = p.run(qc)
U_physical = gate_sequence_product(U_list)
assert_((U_ideal - U_physical).norm() < 1e-12)
def skip_dispersivecqed_SQRTISWAP(self):
"""
Dispersive cQED Setup: compare unitary matrix for SQRTISWAP and
propogator matrix of the implemented physical model.
"""
N = 3
qc1 = QubitCircuit(N)
qc1.add_gate("SQRTISWAP", targets=[0, 1])
U_ideal = gate_sequence_product(qc1.propagators())
p = DispersivecQED(N, correct_global_phase=True)
U_list = p.run(qc1)
U_physical = gate_sequence_product(U_list)
print((U_ideal - U_physical).norm())
assert_((U_ideal - U_physical).norm() < 1e-4)
def test_add_gate(self):
"""
Addition of a gate object directly to a `QubitCircuit`
"""
qc = QubitCircuit(3)
qc.add_gate("CNOT", targets=[1], controls=[0])
test_gate = Gate("RZ", targets=[1], arg_value = 1.570796,
arg_label="P")
qc.add_gate(test_gate)
# Test explicit gate addition
assert_(qc.gates[0].name == "CNOT")
assert_(qc.gates[0].targets == [1])
assert_(qc.gates[0].controls == [0])
# Test direct gate addition
assert_(qc.gates[1].name == test_gate.name)
assert_(qc.gates[1].targets == test_gate.targets)
assert_(qc.gates[1].controls == test_gate.controls)
def testCNOTtoISWAP(self):
"""
CNOT to ISWAP: compare unitary matrix for CNOT and product of
resolved matrices in terms of ISWAP.
"""
qc1 = QubitCircuit(2)
qc1.add_gate("CNOT", targets=[0], controls=[1])
U1 = gate_sequence_product(qc1.propagators())
qc2 = qc1.resolve_gates(basis="ISWAP")
U2 = gate_sequence_product(qc2.propagators())
assert_((U1 - U2).norm() < 1e-12)
def testISWAPtoCNOT(self):
"""
ISWAP to CNOT: compare unitary matrix for ISWAP and product of
resolved matrices in terms of CNOT.
"""
qc1 = QubitCircuit(2)
qc1.add_gate("ISWAP", targets=[0, 1])
U1 = gate_sequence_product(qc1.propagators())
qc2 = qc1.resolve_gates(basis="CNOT")
U2 = gate_sequence_product(qc2.propagators())
assert_((U1 - U2).norm() < 1e-12)
def testSNOTdecompose(self):
"""
SNOT to rotation: compare unitary matrix for SNOT and product of
resolved matrices in terms of rotation gates.
"""
qc1 = QubitCircuit(1)
qc1.add_gate("SNOT", targets=0)
U1 = gate_sequence_product(qc1.propagators())
qc2 = qc1.resolve_gates()
U2 = gate_sequence_product(qc2.propagators())
assert_((U1 - U2).norm() < 1e-12)
def testFREDKINdecompose(self):
"""
FREDKIN to rotation and CNOT: compare unitary matrix for FREDKIN and product of
resolved matrices in terms of rotation gates and CNOT.
"""
qc1 = QubitCircuit(3)
qc1.add_gate("FREDKIN", targets=[0, 1], controls=[2])
U1 = gates.gate_sequence_product(qc1.propagators())
qc2 = qc1.resolve_gates()
U2 = gates.gate_sequence_product(qc2.propagators())
assert _op_dist(U1, U2) < 1e-12
def local(para, N):
qc = QubitCircuit(N)
shape = (N, 3)
para = para.reshape(shape)
i = 0
for angles in para:
qc.add_gate("RZ", i, None, angles[0])
qc.add_gate("RX", i, None, angles[1])
qc.add_gate("RZ", i, None, angles[2])
i += 1
return qc
def test_multi_gates(self):
N = 2
H_d = tensor([sigmaz()] * 2)
H_c = []
test = OptPulseProcessor(N)
test.add_drift(H_d, [0, 1])
test.add_control(sigmax(), cyclic_permutation=True)
test.add_control(sigmay(), cyclic_permutation=True)
test.add_control(tensor([sigmay(), sigmay()]))
# qubits circuit with 3 gates
setting_args = {
"SNOT": {
"num_tslots": 10,
"evo_time": 1
},
"SWAP": {
"num_tslots": 30,
"evo_time": 3
},
"CNOT": {
"num_tslots": 30,
"evo_time": 3
}
}
qc = QubitCircuit(N)
qc.add_gate("SNOT", 0)
qc.add_gate("SWAP", targets=[0, 1])
qc.add_gate('CNOT', controls=1, targets=[0])
test.load_circuit(qc, setting_args=setting_args, merge_gates=False)
rho0 = rand_ket(4) # use random generated ket state
rho0.dims = [[2, 2], [1, 1]]
U = gate_sequence_product(qc.propagators())
rho1 = U * rho0
result = test.run_state(rho0)
assert_(fidelity(result.states[-1], rho1) > 1 - 1.0e-6)
def testadjacentgates(self):
"""
Adjacent Gates: compare unitary matrix for ISWAP and product of
resolved matrices in terms of adjacent gates interaction.
"""
qc1 = QubitCircuit(3)
qc1.add_gate("ISWAP", targets=[0, 2])
U1 = gates.gate_sequence_product(qc1.propagators())
qc0 = qc1.adjacent_gates()
qc2 = qc0.resolve_gates(basis="ISWAP")
U2 = gates.gate_sequence_product(qc2.propagators())
assert _op_dist(U1, U2) < 1e-12
def test_linear_combination(self):
"""
Linear Spin Chain Setup: compare unitary matrix for ISWAP, SQRTISWAP,
RX and RY gates and the propogator matrix of the implemented physical
model.
"""
N = 3
qc = QubitCircuit(N)
qc.add_gate("ISWAP", targets=[0, 1])
qc.add_gate("SQRTISWAP", targets=[0, 1])
qc.add_gate("RZ", arg_value=np.pi/2, arg_label=r"\pi/2", targets=[1])
qc.add_gate("RX", arg_value=np.pi/2, arg_label=r"\pi/2", targets=[0])
U_ideal = gate_sequence_product(qc.propagators())
p = LinearSpinChain(N, correct_global_phase=True)
U_list = p.run(qc)
U_physical = gate_sequence_product(U_list)
assert_((U_ideal - U_physical).norm() < 1e-12)
def qft_gate_sequence(N=1, swapping=True):
"""
Quantum Fourier Transform operator on N qubits returning the gate sequence.
Parameters
----------
N: int
Number of qubits.
swap: boolean
Flag indicating sequence of swap gates to be applied at the end or not.
Returns
-------
qc: instance of QubitCircuit
Gate sequence of Hadamard and controlled rotation gates implementing QFT
"""
if N < 1:
raise ValueError("Minimum value of N can be 1")
qc = QubitCircuit(N)
if N == 1:
qc.add_gate("SNOT", targets=[0])
else:
for i in range(N):
for j in range(i):
qc.add_gate(r"CPHASE", targets=[j], controls=[i],
arg_label=r"{\pi/2^{%d}}" % (i - j),
arg_value=np.pi/(2**(i-j)))
qc.add_gate("SNOT", targets=[i])
if swapping == True:
for i in range(N//2):
qc.add_gate(r"SWAP", targets=[i], controls=[N-1-i])
return qc
def test_compiler_with_continous_pulse(spline_kind, schedule_mode):
num_qubits = 2
circuit = QubitCircuit(num_qubits)
circuit.add_gate("X", targets=0)
circuit.add_gate("X", targets=1)
circuit.add_gate("X", targets=0)
processor = CircularSpinChain(num_qubits)
gauss_compiler = MyCompiler(
processor.N, processor.params, processor.pulse_dict)
processor.load_circuit(
circuit, schedule_mode = schedule_mode, compiler=gauss_compiler)
result = processor.run_state(init_state = basis([2,2], [0,0]))
assert(abs(fidelity(result.states[-1],basis([2,2],[0,1])) - 1) < 1.e-6)
def test_user_gate(self):
"""
User defined gate for QubitCircuit
"""
def customer_gate1(arg_values):
mat = np.zeros((4, 4), dtype=np.complex128)
mat[0, 0] = mat[1, 1] = 1.
mat[2:4, 2:4] = gates.rx(arg_values)
return Qobj(mat, dims=[[2, 2], [2, 2]])
def customer_gate2():
mat = np.array([[1., 0], [0., 1.j]])
return Qobj(mat, dims=[[2], [2]])
qc = QubitCircuit(3)
qc.user_gates = {"CTRLRX": customer_gate1, "T1": customer_gate2}
qc.add_gate("CTRLRX", targets=[1, 2], arg_value=np.pi / 2)
qc.add_gate("T1", targets=[1])
props = qc.propagators()
result1 = tensor(identity(2), customer_gate1(np.pi / 2))
np.testing.assert_allclose(props[0], result1)
result2 = tensor(identity(2), customer_gate2(), identity(2))
np.testing.assert_allclose(props[1], result2)
def test_analytical_evo(self):
"""
Test of run_state with exp(-iHt)
"""
N = 3
qc = QubitCircuit(N)
qc.add_gate("ISWAP", targets=[0, 1])
qc.add_gate("RZ", arg_value=np.pi / 2, arg_label=r"\pi/2", targets=[1])
qc.add_gate("RX", arg_value=np.pi / 2, arg_label=r"\pi/2", targets=[0])
U_ideal = gate_sequence_product(qc.propagators())
rho0 = rand_ket(2**N)
rho0.dims = [[2] * N, [1] * N]
rho1 = gate_sequence_product([rho0] + qc.propagators())
p = DispersivecQED(N, correct_global_phase=True)
U_list = p.run_state(rho0=rho0, qc=qc, analytical=True)
result = gate_sequence_product(U_list)
assert_allclose(fidelity(result, rho1),
1.,
rtol=1e-2,
err_msg="Analytical run_state fails in DispersivecQED")
def test_dispersivecqed_combination(self):
"""
Dispersive cQED Setup: compare unitary matrix for ISWAP, SQRTISWAP,
RX and RY gates and the propogator matrix of the implemented physical
model.
"""
N = 3
qc1 = QubitCircuit(N)
qc1.add_gate("ISWAP", targets=[0, 1])
qc1.add_gate("RZ", arg_value=np.pi/2, arg_label=r"\pi/2", targets=[1])
qc1.add_gate("RX", arg_value=np.pi/2, arg_label=r"\pi/2", targets=[0])
U_ideal = gate_sequence_product(qc1.propagators())
p = DispersivecQED(N, correct_global_phase=True)
U_list = p.run(qc1)
U_physical = gate_sequence_product(U_list)
print((U_ideal - U_physical).norm())
assert_((U_ideal - U_physical).norm() < 1e-2)
def test_add_gate(self):
"""
Addition of a gate object directly to a `QubitCircuit`
"""
qc = QubitCircuit(3)
qc.add_gate("CNOT", targets=[1], controls=[0])
test_gate = Gate("RZ", targets=[1], arg_value=1.570796, arg_label="P")
qc.add_gate(test_gate)
# Test explicit gate addition
assert_(qc.gates[0].name == "CNOT")
assert_(qc.gates[0].targets == [1])
assert_(qc.gates[0].controls == [0])
# Test direct gate addition
assert_(qc.gates[1].name == test_gate.name)
assert_(qc.gates[1].targets == test_gate.targets)
assert_(qc.gates[1].controls == test_gate.controls)
def test_N_level_system(self):
"""
Test for circuit with N-level system.
"""
mat3 = rand_dm(3, density=1.)
def controlled_mat3(arg_value):
"""
A qubit control an operator acting on a 3 level system
"""
control_value = arg_value
dim = mat3.dims[0][0]
return (tensor(fock_dm(2, control_value), mat3) +
tensor(fock_dm(2, 1 - control_value), identity(dim)))
qc = QubitCircuit(2, dims=[3, 2])
qc.user_gates = {"CTRLMAT3": controlled_mat3}
qc.add_gate("CTRLMAT3", targets=[1, 0], arg_value=1)
props = qc.propagators()
np.testing.assert_allclose(mat3, ptrace(props[0], 0) - 1)
def evolute(state):
CNOT01 = Gate('CNOT', targets=1, controls=0)
CNOT12 = Gate('CNOT', targets=2, controls=1)
CNOT02 = Gate('CNOT', targets=2, controls=0)
H0 = Gate('SNOT', targets=0)
sqrtX0 = Gate('SQRTNOT', targets=0)
H2 = Gate('SNOT', targets=2)
qc = QubitCircuit(N=3)
# qc.add_gate(sqrtX0)
# qc.add_gate(sqrtX0)
qc.add_gate(CNOT01)
qc.add_gate(H0)
# qc.add_gate(CNOT12)
# qc.add_gate(H2)
# qc.add_gate(CNOT02)
# qc.add_gate(H2)
gates_sequence = qc.propagators()
scheme = oper.gate_sequence_product(gates_sequence)
return scheme * state
def test_add_gate(self):
"""
Addition of a gate object directly to a `QubitCircuit`
"""
qc = QubitCircuit(6)
qc.add_gate("CNOT", targets=[1], controls=[0])
test_gate = Gate("SWAP", targets=[1, 4])
qc.add_gate(test_gate)
qc.add_gate("TOFFOLI", controls=[0, 1], targets=[2])
qc.add_gate("SNOT", targets=[3])
qc.add_gate(test_gate, index=[3])
qc.add_1q_gate("RY", start=4, end=5, arg_value=1.570796)
# Test explicit gate addition
assert qc.gates[0].name == "CNOT"
assert qc.gates[0].targets == [1]
assert qc.gates[0].controls == [0]
# Test direct gate addition
assert qc.gates[1].name == test_gate.name
assert qc.gates[1].targets == test_gate.targets
# Test specified position gate addition
assert qc.gates[3].name == test_gate.name
assert qc.gates[3].targets == test_gate.targets
# Test adding 1 qubit gate on [start, end] qubits
assert qc.gates[5].name == "RY"
assert qc.gates[5].targets == [4]
assert qc.gates[5].arg_value == 1.570796
assert qc.gates[6].name == "RY"
assert qc.gates[6].targets == [5]
assert qc.gates[5].arg_value == 1.570796
# Test Exceptions # Global phase is not included
for gate in _single_qubit_gates:
if gate not in _para_gates:
# No target
pytest.raises(ValueError, qc.add_gate, gate, None, None)
# Multiple targets
pytest.raises(ValueError, qc.add_gate, gate, [0, 1, 2], None)
# With control
pytest.raises(ValueError, qc.add_gate, gate, [0], [1])
else:
# No target
pytest.raises(ValueError, qc.add_gate, gate, None, None, 1)
# Multiple targets
pytest.raises(ValueError, qc.add_gate, gate, [0, 1, 2], None, 1)
# With control
pytest.raises(ValueError, qc.add_gate, gate, [0], [1], 1)
for gate in _ctrl_gates:
if gate not in _para_gates:
# No target
pytest.raises(ValueError, qc.add_gate, gate, None, [1])
# No control
pytest.raises(ValueError, qc.add_gate, gate, [0], None)
else:
# No target
pytest.raises(ValueError, qc.add_gate, gate, None, [1], 1)
# No control
pytest.raises(ValueError, qc.add_gate, gate, [0], None, 1)
for gate in _swap_like:
if gate not in _para_gates:
# Single target
pytest.raises(ValueError, qc.add_gate, gate, [0], None)
# With control
pytest.raises(ValueError, qc.add_gate, gate, [0, 1], [3])
else:
# Single target
pytest.raises(ValueError, qc.add_gate, gate, [0], None, 1)
# With control
pytest.raises(ValueError, qc.add_gate, gate, [0, 1], [3], 1)
for gate in _fredkin_like:
# Single target
pytest.raises(ValueError, qc.add_gate, gate, [0], [2])
# No control
pytest.raises(ValueError, qc.add_gate, gate, [0, 1], None)
for gate in _toffoli_like:
# No target
pytest.raises(ValueError, qc.add_gate, gate, None, [1, 2])
# Single control
pytest.raises(ValueError, qc.add_gate, gate, [0], [1])
def test_reverse(self):
"""
Reverse a quantum circuit
"""
qc = QubitCircuit(3)
qc.add_gate("RX", targets=[0], arg_value=3.141,
arg_label=r"\pi/2")
qc.add_gate("CNOT", targets=[1], controls=[0])
qc.add_gate("SNOT", targets=[2])
# Keep input output same
qc.add_state("0", targets=[0])
qc.add_state("+", targets=[1], state_type="output")
qc.add_state("-", targets=[1])
qc.reverse_circuit()
assert_(qc.gates[2].name == "SNOT")
assert_(qc.gates[1].name == "CNOT")
assert_(qc.gates[0].name == "RX")
assert_(qc.input_states[0] == "0")
assert_(qc.input_states[2] == None)
assert_(qc.output_states[1] == "+")
def adjacent_gates(self, qc, setup="linear"):
"""
Method to resolve 2 qubit gates with non-adjacent control/s or target/s
in terms of gates with adjacent interactions for linear/circular spin
chain system.
Parameters
----------
qc: :class:`.QubitCircuit`
The circular spin chain circuit to be resolved
setup: Boolean
Linear of Circular spin chain setup
Returns
-------
qc: :class:`.QubitCircuit`
Returns QubitCircuit of resolved gates for the qubit circuit in the
desired basis.
"""
# FIXME This huge block has been here for a long time.
# It could be moved to the new compiler section and carefully
# splitted into smaller peaces.
qc_t = QubitCircuit(qc.N, qc.reverse_states)
swap_gates = ["SWAP", "ISWAP", "SQRTISWAP", "SQRTSWAP", "BERKELEY",
"SWAPalpha"]
N = qc.N
for gate in qc.gates:
if gate.name == "CNOT" or gate.name == "CSIGN":
start = min([gate.targets[0], gate.controls[0]])
end = max([gate.targets[0], gate.controls[0]])
if (setup == "linear" or
(setup == "circular" and (end - start) <= N // 2)):
i = start
while i < end:
if (start + end - i - i == 1 and
(end - start + 1) % 2 == 0):
# Apply required gate if control and target are
# adjacent to each other, provided |control-target|
# is even.
if end == gate.controls[0]:
qc_t.add_gate(gate.name, targets=[i],
controls=[i + 1])
else:
qc_t.add_gate(gate.name, targets=[i + 1],
controls=[i])
elif (start + end - i - i == 2 and
(end - start + 1) % 2 == 1):
# Apply a swap between i and its adjacent gate,
# then the required gate if and then another swap
# if control and target have one qubit between
# them, provided |control-target| is odd.
qc_t.add_gate("SWAP", targets=[i, i + 1])
if end == gate.controls[0]:
qc_t.add_gate(gate.name, targets=[i + 1],
controls=[i + 2])
else:
qc_t.add_gate(gate.name, targets=[i + 2],
controls=[i + 1])
qc_t.add_gate("SWAP", [i, i + 1])
i += 1
else:
# Swap the target/s and/or control with their
# adjacent qubit to bring them closer.
qc_t.add_gate("SWAP", [i, i + 1])
qc_t.add_gate("SWAP", [start + end - i - 1,
start + end - i])
i += 1
elif (end - start) < N - 1:
"""
If the resolving has to go backwards, the path is first
mapped to a separate circuit and then copied back to the
original circuit.
"""
temp = QubitCircuit(N - end + start)
i = 0
while i < (N - end + start):
if (N + start - end - i - i == 1 and
(N - end + start + 1) % 2 == 0):
if end == gate.controls[0]:
temp.add_gate(gate.name, targets=[i],
controls=[i + 1])
else:
temp.add_gate(gate.name, targets=[i + 1],
controls=[i])
elif (N + start - end - i - i == 2 and
(N - end + start + 1) % 2 == 1):
temp.add_gate("SWAP", targets=[i, i + 1])
if end == gate.controls[0]:
temp.add_gate(gate.name, targets=[i + 2],
controls=[i + 1])
else:
temp.add_gate(gate.name, targets=[i + 1],
controls=[i + 2])
temp.add_gate("SWAP", [i, i + 1])
i += 1
else:
temp.add_gate("SWAP", [i, i + 1])
temp.add_gate("SWAP",
[N + start - end - i - 1,
N + start - end - i])
i += 1
j = 0
for gate in temp.gates:
if (j < N - end - 2):
if gate.name in ["CNOT", "CSIGN"]:
qc_t.add_gate(gate.name, end + gate.targets[0],
end + gate.controls[0])
else:
qc_t.add_gate(gate.name,
[end + gate.targets[0],
end + gate.targets[1]])
elif (j == N - end - 2):
if gate.name in ["CNOT", "CSIGN"]:
qc_t.add_gate(gate.name, end + gate.targets[0],
(end + gate.controls[0]) % N)
else:
qc_t.add_gate(gate.name,
[end + gate.targets[0],
(end + gate.targets[1]) % N])
else:
if gate.name in ["CNOT", "CSIGN"]:
qc_t.add_gate(gate.name,
(end + gate.targets[0]) % N,
(end + gate.controls[0]) % N)
else:
qc_t.add_gate(gate.name,
[(end + gate.targets[0]) % N,
(end + gate.targets[1]) % N])
j = j + 1
elif (end - start) == N - 1:
qc_t.add_gate(gate.name, gate.targets, gate.controls)
elif gate.name in swap_gates:
start = min([gate.targets[0], gate.targets[1]])
end = max([gate.targets[0], gate.targets[1]])
if (setup == "linear" or
(setup == "circular" and (end - start) <= N // 2)):
i = start
while i < end:
if (start + end - i - i == 1 and
(end - start + 1) % 2 == 0):
qc_t.add_gate(gate.name, [i, i + 1])
elif ((start + end - i - i) == 2 and
(end - start + 1) % 2 == 1):
qc_t.add_gate("SWAP", [i, i + 1])
qc_t.add_gate(gate.name, [i + 1, i + 2])
qc_t.add_gate("SWAP", [i, i + 1])
i += 1
else:
qc_t.add_gate("SWAP", [i, i + 1])
qc_t.add_gate("SWAP", [start + end - i - 1,
start + end - i])
i += 1
else:
temp = QubitCircuit(N - end + start)
i = 0
while i < (N - end + start):
if (N + start - end - i - i == 1 and
(N - end + start + 1) % 2 == 0):
temp.add_gate(gate.name, [i, i + 1])
elif (N + start - end - i - i == 2 and
(N - end + start + 1) % 2 == 1):
temp.add_gate("SWAP", [i, i + 1])
temp.add_gate(gate.name, [i + 1, i + 2])
temp.add_gate("SWAP", [i, i + 1])
i += 1
else:
temp.add_gate("SWAP", [i, i + 1])
temp.add_gate("SWAP", [N + start - end - i - 1,
N + start - end - i])
i += 1
j = 0
for gate in temp.gates:
if(j < N - end - 2):
qc_t.add_gate(gate.name, [end + gate.targets[0],
end + gate.targets[1]])
elif(j == N - end - 2):
qc_t.add_gate(gate.name,
[end + gate.targets[0],
(end + gate.targets[1]) % N])
else:
qc_t.add_gate(gate.name,
[(end + gate.targets[0]) % N,
(end + gate.targets[1]) % N])
j = j + 1
else:
qc_t.add_gate(gate.name, gate.targets, gate.controls,
gate.arg_value, gate.arg_label)
return qc_t
def test_single_qubit_gates(self):
"""
Text single qubit gates are added correctly
"""
qc = QubitCircuit(3)
qc.add_gate("X", targets=[0])
qc.add_gate("CY", targets=[1], controls=[0])
qc.add_gate("Y", targets=[2])
qc.add_gate("CS", targets=[0], controls=[1])
qc.add_gate("Z", targets=[1])
qc.add_gate("CT", targets=[2], controls=[2])
qc.add_gate("CZ", targets=[0], controls=[0])
qc.add_gate("S", targets=[1])
qc.add_gate("T", targets=[2])
assert qc.gates[8].name == "T"
assert qc.gates[7].name == "S"
assert qc.gates[6].name == "CZ"
assert qc.gates[5].name == "CT"
assert qc.gates[4].name == "Z"
assert qc.gates[3].name == "CS"
assert qc.gates[2].name == "Y"
assert qc.gates[1].name == "CY"
assert qc.gates[0].name == "X"
assert qc.gates[8].targets == [2]
assert qc.gates[7].targets == [1]
assert qc.gates[6].targets == [0]
assert qc.gates[5].targets == [2]
assert qc.gates[4].targets == [1]
assert qc.gates[3].targets == [0]
assert qc.gates[2].targets == [2]
assert qc.gates[1].targets == [1]
assert qc.gates[0].targets == [0]
assert qc.gates[6].controls == [0]
assert qc.gates[5].controls == [2]
assert qc.gates[3].controls == [1]
assert qc.gates[1].controls == [0]
def test_add_measurement(self):
"""
Addition of Measurement Object to a circuit.
"""
qc = QubitCircuit(3, num_cbits=2)
qc.add_measurement("M0", targets=[0], classical_store=1)
qc.add_gate("CNOT", targets=[1], controls=[0])
qc.add_gate("TOFFOLI", controls=[0, 1], targets=[2])
qc.add_measurement("M1", targets=[2], classical_store=0)
qc.add_gate("SNOT", targets=[1], classical_controls=[0, 1])
qc.add_measurement("M2", targets=[1])
# checking correct addition of measurements
assert qc.gates[0].targets[0] == 0
assert qc.gates[0].classical_store == 1
assert qc.gates[3].name == "M1"
assert qc.gates[5].classical_store is None
# checking if gates are added correctly with measurements
assert qc.gates[2].name == "TOFFOLI"
assert qc.gates[4].classical_controls == [0, 1]
from qutip import *
from qutip.qip.circuit import QubitCircuit
from diamond.DiamondCircuit import save_circuit
import numpy as np
qc = QubitCircuit(4, reverse_states=False)
qc.add_gate('X', 0)
qc.add_gate('X', 1)
qc.add_gate('R_z', 2, [0, 1, 3], 0, r'\mp \frac{\pi}{2}')
qc.add_gate('R_y', 2, [0, 1, 3], 0, r'a')
qc.add_gate('R_z', 2, [0, 1, 3], 0, r'b')
qc.add_gate('A', [0, 1, 2, 3])
qc.add_gate('R_z', 2, [0, 1, 3], 0, r'\mp \frac{\pi}{2}')
qc.add_gate('R_y', 2, [0, 1, 3], 0, r'a')
qc.add_gate('R_z', 2, [0, 1, 3], 0, r'c')
qc.add_gate('B', [0, 1, 2, 3])
qc.add_gate('R_z', 3, [0, 1, 2], 0, r'\pm \frac{\pi}{2}')
qc.add_gate('R_y', 3, [0, 1, 2], 0, r'a')
qc.add_gate('R_z', 3, [0, 1, 2], 0, r'-b')
qc.add_gate('C', [0, 1, 2, 3])
qc.add_gate('R_z', 1, [0, 2, 3], 0, r'\pm \frac{\pi}{2}')
qc.add_gate('R_y', 1, [0, 2, 3], 0, r'a')
qc.add_gate('R_z', 1, [0, 2, 3], 0, r'-c')
qc.add_gate('D', [0, 1, 2, 3])
qc.add_gate('R_z', 3, [0, 1, 2], 0, r'\mp a')
qc.add_gate('R_y', 3, [0, 1, 2], 0, r'-\pi')
qc.add_gate('R_z', 3, [0, 1, 2], 0, r'\pm a')
qc.add_gate(r'R_{\phi}', 3, [0, 1, 2], 0, r't - \pi')
qc.add_gate('X', 1)
qc.add_gate('X', 2)
save_circuit(qc, 'U')
def adjacent_gates(self, qc, setup="linear"):
"""
Method to resolve 2 qubit gates with non-adjacent control/s or target/s
in terms of gates with adjacent interactions for linear/circular spin
chain system.
Parameters
----------
qc: QubitCircuit
The circular spin chain circuit to be resolved
setup: Boolean
Linear of Circular spin chain setup
Returns
----------
qc: QubitCircuit
Returns QubitCircuit of resolved gates for the qubit circuit in the
desired basis.
"""
qc_t = QubitCircuit(qc.N, qc.reverse_states)
swap_gates = ["SWAP", "ISWAP", "SQRTISWAP", "SQRTSWAP", "BERKELEY",
"SWAPalpha"]
N = qc.N
for gate in qc.gates:
if gate.name == "CNOT" or gate.name == "CSIGN":
start = min([gate.targets[0], gate.controls[0]])
end = max([gate.targets[0], gate.controls[0]])
if (setup == "linear" or
(setup == "circular" and (end - start) <= N // 2)):
i = start
while i < end:
if (start + end - i - i == 1 and
(end - start + 1) % 2 == 0):
# Apply required gate if control and target are
# adjacent to each other, provided |control-target|
# is even.
if end == gate.controls[0]:
qc_t.add_gate(gate.name, targets=[i],
controls=[i + 1])
else:
qc_t.add_gate(gate.name, targets=[i + 1],
controls=[i])
elif (start + end - i - i == 2 and
(end - start + 1) % 2 == 1):
# Apply a swap between i and its adjacent gate,
# then the required gate if and then another swap
# if control and target have one qubit between
# them, provided |control-target| is odd.
qc_t.add_gate("SWAP", targets=[i, i + 1])
if end == gate.controls[0]:
qc_t.add_gate(gate.name, targets=[i + 1],
controls=[i + 2])
else:
qc_t.add_gate(gate.name, targets=[i + 2],
controls=[i + 1])
qc_t.add_gate("SWAP", [i, i + 1])
i += 1
else:
# Swap the target/s and/or control with their
# adjacent qubit to bring them closer.
qc_t.add_gate("SWAP", [i, i + 1])
qc_t.add_gate("SWAP", [start + end - i - 1,
start + end - i])
i += 1
elif (end - start) < N - 1:
"""
If the resolving has to go backwards, the path is first
mapped to a separate circuit and then copied back to the
original circuit.
"""
temp = QubitCircuit(N - end + start)
i = 0
while i < (N - end + start):
if (N + start - end - i - i == 1 and
(N - end + start + 1) % 2 == 0):
if end == gate.controls[0]:
temp.add_gate(gate.name, targets=[i],
controls=[i + 1])
else:
temp.add_gate(gate.name, targets=[i + 1],
controls=[i])
elif (N + start - end - i - i == 2 and
(N - end + start + 1) % 2 == 1):
temp.add_gate("SWAP", targets=[i, i + 1])
if end == gate.controls[0]:
temp.add_gate(gate.name, targets=[i + 2],
controls=[i + 1])
else:
temp.add_gate(gate.name, targets=[i + 1],
controls=[i + 2])
temp.add_gate("SWAP", [i, i + 1])
i += 1
else:
temp.add_gate("SWAP", [i, i + 1])
temp.add_gate("SWAP",
[N + start - end - i - 1,
N + start - end - i])
i += 1
j = 0
for gate in temp.gates:
if (j < N - end - 2):
if gate.name in ["CNOT", "CSIGN"]:
qc_t.add_gate(gate.name, end + gate.targets[0],
end + gate.controls[0])
else:
qc_t.add_gate(gate.name,
[end + gate.targets[0],
end + gate.targets[1]])
elif (j == N - end - 2):
if gate.name in ["CNOT", "CSIGN"]:
qc_t.add_gate(gate.name, end + gate.targets[0],
(end + gate.controls[0]) % N)
else:
qc_t.add_gate(gate.name,
[end + gate.targets[0],
(end + gate.targets[1]) % N])
else:
if gate.name in ["CNOT", "CSIGN"]:
qc_t.add_gate(gate.name,
(end + gate.targets[0]) % N,
(end + gate.controls[0]) % N)
else:
qc_t.add_gate(gate.name,
[(end + gate.targets[0]) % N,
(end + gate.targets[1]) % N])
j = j + 1
elif (end - start) == N - 1:
qc_t.add_gate(gate.name, gate.targets, gate.controls)
elif gate.name in swap_gates:
start = min([gate.targets[0], gate.targets[1]])
end = max([gate.targets[0], gate.targets[1]])
if (setup == "linear" or
(setup == "circular" and (end - start) <= N // 2)):
i = start
while i < end:
if (start + end - i - i == 1 and
(end - start + 1) % 2 == 0):
qc_t.add_gate(gate.name, [i, i + 1])
elif ((start + end - i - i) == 2 and
(end - start + 1) % 2 == 1):
qc_t.add_gate("SWAP", [i, i + 1])
qc_t.add_gate(gate.name, [i + 1, i + 2])
qc_t.add_gate("SWAP", [i, i + 1])
i += 1
else:
qc_t.add_gate("SWAP", [i, i + 1])
qc_t.add_gate("SWAP", [start + end - i - 1,
start + end - i])
i += 1
else:
temp = QubitCircuit(N - end + start)
i = 0
while i < (N - end + start):
if (N + start - end - i - i == 1 and
(N - end + start + 1) % 2 == 0):
temp.add_gate(gate.name, [i, i + 1])
elif (N + start - end - i - i == 2 and
(N - end + start + 1) % 2 == 1):
temp.add_gate("SWAP", [i, i + 1])
temp.add_gate(gate.name, [i + 1, i + 2])
temp.add_gate("SWAP", [i, i + 1])
i += 1
else:
temp.add_gate("SWAP", [i, i + 1])
temp.add_gate("SWAP", [N + start - end - i - 1,
N + start - end - i])
i += 1
j = 0
for gate in temp.gates:
if(j < N - end - 2):
qc_t.add_gate(gate.name, [end + gate.targets[0],
end + gate.targets[1]])
elif(j == N - end - 2):
qc_t.add_gate(gate.name,
[end + gate.targets[0],
(end + gate.targets[1]) % N])
else:
qc_t.add_gate(gate.name,
[(end + gate.targets[0]) % N,
(end + gate.targets[1]) % N])
j = j + 1
else:
qc_t.add_gate(gate.name, gate.targets, gate.controls,
gate.arg_value, gate.arg_label)
return qc_t
def test_add_circuit(self):
"""
Addition of a circuit to a `QubitCircuit`
"""
qc = QubitCircuit(6)
qc.add_gate("CNOT", targets=[1], controls=[0])
test_gate = Gate("SWAP", targets=[1, 4])
qc.add_gate(test_gate)
qc.add_gate("TOFFOLI", controls=[0, 1], targets=[2])
qc.add_gate("SNOT", targets=[3])
qc.add_gate(test_gate, index=[3])
qc.add_measurement("M0", targets=[0], classical_store=[1])
qc.add_1q_gate("RY", start=4, end=5, arg_value=1.570796)
qc1 = QubitCircuit(6)
qc1.add_circuit(qc)
# Test if all gates and measurements are added
assert len(qc1.gates) == len(qc.gates)
for i in range(len(qc1.gates)):
assert (qc1.gates[i].name
== qc.gates[i].name)
assert (qc1.gates[i].targets
== qc.gates[i].targets)
if (isinstance(qc1.gates[i], Gate) and
isinstance(qc.gates[i], Gate)):
assert (qc1.gates[i].controls
== qc.gates[i].controls)
assert (qc1.gates[i].classical_controls
== qc.gates[i].classical_controls)
elif (isinstance(qc1.gates[i], Measurement) and
isinstance(qc.gates[i], Measurement)):
assert (qc1.gates[i].classical_store
== qc.gates[i].classical_store)
# Test exception when qubit out of range
pytest.raises(NotImplementedError, qc1.add_circuit, qc, start=4)
qc2 = QubitCircuit(8)
qc2.add_circuit(qc, start=2)
# Test if all gates are added
assert len(qc2.gates) == len(qc.gates)
# Test if the positions are correct
for i in range(len(qc2.gates)):
if qc.gates[i].targets is not None:
assert (qc2.gates[i].targets[0]
== qc.gates[i].targets[0]+2)
if (isinstance(qc.gates[i], Gate) and
qc.gates[i].controls is not None):
assert (qc2.gates[i].controls[0]
== qc.gates[i].controls[0]+2)
def testStateParams(a1, a2, a3, a4, a5, a6):
QC = QubitCircuit(3)
QC.add_gate("RX", targets=0, arg_value=a1)
QC.add_gate("RX", targets=1, arg_value=a2)
QC.add_gate("RX", targets=2, arg_value=a3)
QC.add_gate("CNOT", targets=1, controls=0)
QC.add_gate("CNOT", targets=2, controls=0)
QC.add_gate("RX", targets=0, arg_value=a4)
QC.add_gate("RX", targets=1, arg_value=a5)
QC.add_gate("RX", targets=2, arg_value=a6)
U_list = QC.propagators()
finalGate = gate_sequence_product(U_list)
finalState = finalGate * initialState
return calcStateFidelity(targetState, finalState)
def test_add_state(self):
"""
Addition of input and output states to a circuit.
"""
qc = QubitCircuit(3)
qc.add_state("0", targets=[0])
qc.add_state("+", targets=[1], state_type="output")
qc.add_state("-", targets=[1])
assert qc.input_states[0] == "0"
assert qc.input_states[2] is None
assert qc.output_states[1] == "+"
qc1 = QubitCircuit(10)
qc1.add_state("0", targets=[2, 3, 5, 6])
qc1.add_state("+", targets=[1, 4, 9])
qc1.add_state("A", targets=[1, 4, 9], state_type="output")
qc1.add_state("A", targets=[1, 4, 9], state_type="output")
qc1.add_state("beta", targets=[0], state_type="output")
assert qc1.input_states[0] is None
assert qc1.input_states[2] == "0"
assert qc1.input_states[3] == "0"
assert qc1.input_states[6] == "0"
assert qc1.input_states[1] == "+"
assert qc1.input_states[4] == "+"
assert qc1.output_states[2] is None
assert qc1.output_states[1] == "A"
assert qc1.output_states[4] == "A"
assert qc1.output_states[9] == "A"
assert qc1.output_states[0] == "beta"
from .three_q_generators import *
from numpy import pi
from qutip.qip.operations import snot
from qutip.qip.circuit import QubitCircuit
from qutip.qip.operations import gate_sequence_product
from qutip.tensor import tensor
import qutip as qt
spins = []
for i in range(1, 4):
spins.append(qt.basis(2, 0))
initial_state = tensor(spins)
QC = QubitCircuit(3)
QC.add_gate("RX", targets=0, arg_value=0.5)
QC.add_gate("RX", targets=1, arg_value=0.1)
QC.add_gate("RX", targets=2, arg_value=0.2223472)
QC.add_gate("CNOT", targets=1, controls=0)
QC.add_gate("CNOT", targets=2, controls=0)
QC.add_gate("RX", targets=0, arg_value=0.26127)
QC.add_gate("RX", targets=1, arg_value=1.3942948)
QC.add_gate("RX", targets=1, arg_value=0.4378)
U_list = QC.propagators()
TargetGate = gate_sequence_product(U_list)
class threeQubitCircuit(problem):
def __init__(self,
def test_exceptions(self, gate):
"""
Text exceptions are thrown correctly for inadequate inputs
"""
qc = QubitCircuit(2)
pytest.raises(ValueError, qc.add_gate, gate, targets=[1], controls=[0])
def _circuit1():
circuit1 = QubitCircuit(6)
circuit1.add_gate("SNOT", 2)
circuit1.add_gate("CNOT", 4, 2)
circuit1.add_gate("CNOT", 3, 2)
circuit1.add_gate("CNOT", 1, 2)
circuit1.add_gate("CNOT", 5, 4)
circuit1.add_gate("CNOT", 1, 5)
circuit1.add_gate("SWAP", [0, 1])
return circuit1
def test_reverse(self):
"""
Reverse a quantum circuit
"""
qc = QubitCircuit(3)
qc.add_gate("RX", targets=[0], arg_value=3.141,
arg_label=r"\pi/2")
qc.add_gate("CNOT", targets=[1], controls=[0])
qc.add_measurement("M1", targets=[1])
qc.add_gate("SNOT", targets=[2])
# Keep input output same
qc.add_state("0", targets=[0])
qc.add_state("+", targets=[1], state_type="output")
qc.add_state("-", targets=[1])
qc_rev = qc.reverse_circuit()
assert qc_rev.gates[0].name == "SNOT"
assert qc_rev.gates[1].name == "M1"
assert qc_rev.gates[2].name == "CNOT"
assert qc_rev.gates[3].name == "RX"
assert qc_rev.input_states[0] == "0"
assert qc_rev.input_states[2] is None
assert qc_rev.output_states[1] == "+"
def _circuit2():
circuit2 = QubitCircuit(8)
circuit2.add_gate("SNOT", 1)
circuit2.add_gate("SNOT", 2)
circuit2.add_gate("SNOT", 3)
circuit2.add_gate("CNOT", 4, 5)
circuit2.add_gate("CNOT", 4, 6)
circuit2.add_gate("CNOT", 3, 4)
circuit2.add_gate("CNOT", 3, 5)
circuit2.add_gate("CNOT", 3, 7)
circuit2.add_gate("CNOT", 2, 4)
circuit2.add_gate("CNOT", 2, 6)
circuit2.add_gate("CNOT", 2, 7)
circuit2.add_gate("CNOT", 1, 5)
circuit2.add_gate("CNOT", 1, 6)
circuit2.add_gate("CNOT", 1, 7)
return circuit2
def _teleportation_circuit():
teleportation = QubitCircuit(3, num_cbits=2,
input_states=["q0", "0", "0", "c0", "c1"])
teleportation.add_gate("SNOT", targets=[1])
teleportation.add_gate("CNOT", targets=[2], controls=[1])
teleportation.add_gate("CNOT", targets=[1], controls=[0])
teleportation.add_gate("SNOT", targets=[0])
teleportation.add_measurement("M0", targets=[0], classical_store=1)
teleportation.add_measurement("M1", targets=[1], classical_store=0)
teleportation.add_gate("X", targets=[2], classical_controls=[0])
teleportation.add_gate("Z", targets=[2], classical_controls=[1])
return teleportation
def _instructions1():
circuit3 = QubitCircuit(6)
circuit3.add_gate("SNOT", 0)
circuit3.add_gate("SNOT", 1)
circuit3.add_gate("CNOT", 2, 3)
circuit3.add_gate("CNOT", 1, 2)
circuit3.add_gate("CNOT", 1, 0)
circuit3.add_gate("SNOT", 3)
circuit3.add_gate("CNOT", 1, 3)
circuit3.add_gate("CNOT", 1, 3)
instruction_list = []
for gate in circuit3.gates:
if gate.name == "SNOT":
instruction_list.append(Instruction(gate, duration=1))
else:
instruction_list.append(Instruction(gate, duration=2))
return instruction_list
def evolute(state):
qc = QubitCircuit(N=3)
qc.add_gate("CNOT", controls=0, targets=1)
qc.add_gate("SNOT", targets=0)
U_list = qc.propagators()
return gate_sequence_product(U_list) * state
def test_add_state(self):
"""
Addition of input and output states to a circuit.
"""
qc = QubitCircuit(3)
qc.add_state("0", targets=[0])
qc.add_state("+", targets=[1], state_type="output")
qc.add_state("-", targets=[1])
assert_(qc.input_states[0] == "0")
assert_(qc.input_states[2] == None)
assert_(qc.output_states[1] == "+")
qc1 = QubitCircuit(10)
qc1.add_state("0", targets=[2, 3, 5, 6])
qc1.add_state("+", targets=[1,4,9])
qc1.add_state("A", targets=[1,4,9], state_type="output")
qc1.add_state("A", targets=[1,4,9], state_type="output")
qc1.add_state("beta", targets=[0], state_type="output")
assert_(qc1.input_states[0] == None)
assert_(qc1.input_states[2] == "0")
assert_(qc1.input_states[3] == "0")
assert_(qc1.input_states[6] == "0")
assert_(qc1.input_states[1] == "+")
assert_(qc1.input_states[4] == "+")
assert_(qc1.output_states[2] == None)
assert_(qc1.output_states[1] == "A")
assert_(qc1.output_states[4] == "A")
assert_(qc1.output_states[9] == "A")
assert_(qc1.output_states[0] == "beta")
