def _decompose_QPE(cmd):
""" Decompose the Quantum Phase Estimation gate. """
eng = cmd.engine
# Ancillas is the first qubit/qureg. System-qubit is the second qubit/qureg
qpe_ancillas = cmd.qubits[0]
system_qubits = cmd.qubits[1]
# Hadamard on the ancillas
Tensor(H) | qpe_ancillas
# The Unitary Operator
U = cmd.gate.unitary
# Control U on the system_qubits
if (callable(U)):
# If U is a function
for i in range(len(qpe_ancillas)):
with Control(eng, qpe_ancillas[i]):
U(system_qubits, time=2**i)
else:
for i in range(len(qpe_ancillas)):
ipower = int(2**i)
with Loop(eng, ipower):
with Control(eng, qpe_ancillas[i]):
U | system_qubits
# Inverse QFT on the ancillas
get_inverse(QFT) | qpe_ancillas
def _decompose_parity_measurement(cmd):
ancilla = cmd.engine.allocate_qubit()
for pos, action in cmd.gate._bases:
qureg = Qureg([cmd.qubits[0][pos]])
if action == "X":
H | cmd.qubits[0][pos]
with Control(cmd.engine, qureg):
X | ancilla
H | cmd.qubits[0][pos]
elif action == "Y":
H | cmd.qubits[0][pos]
S | cmd.qubits[0][pos]
with Control(cmd.engine, qureg):
X | ancilla
get_inverse(S) | cmd.qubits[0][pos]
H | cmd.qubits[0][pos]
elif action == "Z":
with Control(cmd.engine, qureg):
X | ancilla
# if there is a minus sign
if (cmd.gate._is_inverted):
X | ancilla
# at last measure the parity:
Measure | ancilla
def _decompose_QPE(cmd): # pylint: disable=invalid-name
"""Decompose the Quantum Phase Estimation gate."""
eng = cmd.engine
# Ancillas is the first qubit/qureg. System-qubit is the second qubit/qureg
qpe_ancillas = cmd.qubits[0]
system_qubits = cmd.qubits[1]
# Hadamard on the ancillas
Tensor(H) | qpe_ancillas
# The Unitary Operator
unitary = cmd.gate.unitary
# Control U on the system_qubits
if callable(unitary):
# If U is a function
for i, ancilla in enumerate(qpe_ancillas):
with Control(eng, ancilla):
unitary(system_qubits, time=2**i)
else:
for i, ancilla in enumerate(qpe_ancillas):
ipower = int(2**i)
with Loop(eng, ipower):
with Control(eng, ancilla):
unitary | system_qubits
# Inverse QFT on the ancillas
get_inverse(QFT) | qpe_ancillas
def observe(agent_memory, qureg, reverse=False):
assert len(agent_memory) >= len(qureg), 'Invalid observe. Observed system is larger than what memory ' \
'of the agent can hold.'
if reverse:
get_inverse(Add) | (qureg, agent_memory)
else:
Add | (qureg, agent_memory)
def test_s_gate(): gate = _gates.SGate() assert str(gate) == "S" assert np.array_equal(gate.matrix, np.matrix([[1, 0], [0, 1j]])) assert isinstance(_gates.S, _gates.SGate) assert type(_gates.Sdag) == type(get_inverse(gate)) assert type(_gates.Sdagger) == type(get_inverse(gate))
def run_phase_estimation(eng, U, state, m, n):
"""
Phase estimation algorithm on unitary U.
Args:
eng (MainEngine): Main compiler engine to run the phase_estimation algorithm
U (np.matrix): the unitary that is to be estimated
state (qureg): the input state, which has the form |psi> otimes |0>.
State is composed of two parts:
1. The first n qubits are the input state |psi>, which is commonly
chosen to be the eigenstate of U
2. The last n qubits are initialized to |0>, which is used to
store the binary digits of the estimated phase
m (int): number of qubits for input state psi
n (int): number of qubits used to store the phase to given precision
"""
# The beginning index for the phase qubits will have an offset
OFFSET = m
# Phase 1. performs the controlled U^{2^j} operations
for k in range(n):
H | state[OFFSET + k]
with Control(eng, state[OFFSET + k]):
# number of loops required to perfrom the controlled U^{2^j} operation
num = int(math.pow(2, k))
# use the buildin loop
with Loop(eng, num):
U | state[:OFFSET]
# Phase 2. performs the inverse QFT operation
# Step 2.1 swap the qubits
for k in range(int(math.floor(n / 2))):
Swap | (state[OFFSET + k], state[OFFSET + n - k - 1])
# Step 2.2 perfrom the original inverse QFT
get_inverse(QFT) | state[OFFSET:]
def test_t_gate(): gate = _gates.TGate() assert str(gate) == "T" assert np.array_equal(gate.matrix, np.matrix([[1, 0], [0, cmath.exp(1j * cmath.pi / 4)]])) assert isinstance(_gates.T, _gates.TGate) assert type(_gates.Tdag) == type(get_inverse(gate)) assert type(_gates.Tdagger) == type(get_inverse(gate))
def test_body():
drawer = _drawer.CircuitDrawer()
eng = MainEngine(drawer, [])
old_tolatex = _drawer.to_latex
_drawer.to_latex = lambda x: x
qubit1 = eng.allocate_qubit()
qubit2 = eng.allocate_qubit()
qubit3 = eng.allocate_qubit()
H | qubit1
H | qubit2
CNOT | (qubit1, qubit2)
X | qubit2
Measure | qubit2
CNOT | (qubit2, qubit1)
Z | qubit2
C(Z) | (qubit1, qubit2)
C(Swap) | (qubit1, qubit2, qubit3)
SqrtX | qubit1
SqrtSwap | (qubit1, qubit2)
get_inverse(SqrtX) | qubit1
C(SqrtSwap) | (qubit1, qubit2, qubit3)
get_inverse(SqrtSwap) | (qubit1, qubit2)
C(Swap) | (qubit3, qubit1, qubit2)
C(SqrtSwap) | (qubit3, qubit1, qubit2)
del qubit1
eng.flush()
circuit_lines = drawer.get_latex()
_drawer.to_latex = old_tolatex
settings = _to_latex.get_default_settings()
settings['gates']['AllocateQubitGate']['draw_id'] = True
code = _to_latex._body(circuit_lines, settings)
# swap draws 2 nodes + 2 lines each, so is sqrtswap gate, csqrtswap,
# inv(sqrt_swap), and cswap.
assert code.count("swapstyle") == 36
# CZ is two phases plus 2 from CNOTs + 2 from cswap + 2 from csqrtswap
assert code.count("phase") == 8
assert code.count("{{{}}}".format(str(H))) == 2 # 2 hadamard gates
assert code.count("{$\Ket{0}") == 3 # 3 qubits allocated
# 1 cnot, 1 not gate, 3 SqrtSwap, 1 inv(SqrtSwap)
assert code.count("xstyle") == 7
assert code.count("measure") == 1 # 1 measurement
assert code.count("{{{}}}".format(str(Z))) == 1 # 1 Z gate
assert code.count("{red}") == 3
def high_level_gates(eng, cmd):
g = cmd.gate
if g == QFT or get_inverse(g) == QFT or g == Swap:
return True
if isinstance(g, BasicMathGate):
return False
return eng.next_engine.is_available(cmd)
def perform_simulation(self):
for gate in reversed(self._gates):
self._simulator.apply_operation(gates.get_inverse(gate))
for bases, qubits, parity in self._simulator.return_stabilizers():
cmd = projqube.projectq.ops.ParityMeasurementGate(bases, parity).generate_command(qubits)
self.send([cmd])
def quanutm_phase_estimation(eng):
All(H) | phase_reg
with Control(eng, phase_reg[0]):
run_qnn(eng)
with Control(eng, phase_reg[1]):
with Loop(eng, 2):
run_qnn(eng)
with Control(eng, phase_reg[2]):
with Loop(eng, 4):
run_qnn(eng)
Swap | (phase_reg[0], phase_reg[2])
get_inverse(QFT) | phase_reg
def _all_decomps_for(self, cmd):
key = cmd.gate.__class__.__name__
inv_key = get_inverse(cmd.gate).__class__.__name__
ds = self.decomposition_rule_set.decompositions
forward = ds[key] if key in ds else []
backward = [d.get_inverse_decomposition()
for d in ds[inv_key]] if inv_key in ds else []
return [d for d in forward + backward if d.check(cmd)]
def high_level_gates(eng, cmd): # pylint: disable=unused-argument
"""Remove any MathGates."""
gate = cmd.gate
if eng.next_engine.is_available(cmd):
return True
if gate == QFT or get_inverse(gate) == QFT or gate == Swap:
return True
if isinstance(gate, BasicMathGate):
return False
return True
def high_level_gates(eng, cmd):
"""
Remove any MathGates.
"""
g = cmd.gate
if g == QFT or get_inverse(g) == QFT or g == Swap:
return True
elif isinstance(g, BasicMathGate):
return False
return True
def high_level_gates(eng, cmd):
g = cmd.gate
if g == QFT or get_inverse(g) == QFT or g == Swap:
return True
if isinstance(g, BasicMathGate):
return False # False - http://projectq.readthedocs.io/en/latest/examples.html#shor-s-algorithm-for-factoring
if isinstance(g, AddConstant):
return True
elif isinstance(g, AddConstantModN):
return True
return False
return eng.next_engine.is_available(cmd)
def GetHighLevelGates(eng, cmd):
g = cmd.gate
if g == QFT or get_inverse(g) == QFT or g == Swap:
return True
if isinstance(g, BasicMathGate):
return False
if isinstance(g, AddConstant):
return True
elif isinstance(g, AddConstantModN):
return True
return False
return eng.next_engine.is_available(cmd)
def test_high_level_gate_set():
mod_list = projectq.setups.ibm16.get_engine_list()
saving_engine = DummyEngine(save_commands=True)
mod_list = mod_list[:6] + [saving_engine] + mod_list[6:]
eng = MainEngine(DummyEngine(), engine_list=mod_list)
qureg = eng.allocate_qureg(3)
AddConstant(3) | qureg
QFT | qureg
eng.flush()
received_gates = [cmd.gate for cmd in saving_engine.received_commands]
assert sum([1 for g in received_gates if g == QFT]) == 1
assert get_inverse(QFT) not in received_gates
assert AddConstant(3) not in received_gates
def high_level_gates(eng, cmd):
"""Filter high-level gates."""
g = cmd.gate
if g == QFT or get_inverse(g) == QFT or g == Swap:
return True
if isinstance(g, BasicMathGate):
return False
if isinstance(g, AddConstant):
return True
elif isinstance(g, AddConstantModN):
return True
return False
return eng.next_engine.is_available(cmd)
def _process_command(self, cmd):
"""
Check whether a command cmd can be handled by further engines and,
if not, replace it using the decomposition rules loaded with the setup
(e.g., setups.default).
Args:
cmd (Command): Command to process.
Raises:
Exception if no replacement is available in the loaded setup.
"""
if self.is_available(cmd):
self.send([cmd])
else:
# check for decomposition rules
decomp_list = []
potential_decomps = []
inv_list = []
# check for forward rules
cls = cmd.gate.__class__.__name__
try:
potential_decomps = [
d for d in self.decompositionRuleSet.decompositions[cls]
]
except KeyError:
pass
# check for rules implementing the inverse gate
# and run them in reverse
inv_cls = get_inverse(cmd.gate).__class__.__name__
try:
potential_decomps += [
d.get_inverse_decomposition()
for d in self.decompositionRuleSet.decompositions[inv_cls]
]
except KeyError:
pass
# throw out the ones which don't recognize the command
for d in potential_decomps:
if d.check(cmd):
decomp_list.append(d)
if len(decomp_list) == 0:
raise NoGateDecompositionError("\nNo replacement found for "
+ str(cmd) + "!")
# use decomposition chooser to determine the best decomposition
chosen_decomp = self._decomp_chooser(cmd, decomp_list)
# the decomposed command must have the same tags
# (plus the ones it gets from meta-statements inside the
# decomposition rule).
# --> use a CommandModifier with a ForwarderEngine to achieve this.
old_tags = cmd.tags[:]
def cmd_mod_fun(cmd): # Adds the tags
cmd.tags = old_tags[:] + cmd.tags
cmd.engine = self.main_engine
return cmd
# the CommandModifier calls cmd_mod_fun for each command
# --> commands get the right tags.
cmod_eng = CommandModifier(cmd_mod_fun)
cmod_eng.next_engine = self # send modified commands back here
cmod_eng.main_engine = self.main_engine
# forward everything to cmod_eng using the ForwarderEngine
# which behaves just like MainEngine
# (--> meta functions still work)
forwarder_eng = ForwarderEngine(cmod_eng)
cmd.engine = forwarder_eng # send gates directly to forwarder
# (and not to main engine, which would screw up the ordering).
chosen_decomp.decompose(cmd) # run the decomposition
def to_tikz( # pylint: disable=too-many-branches,too-many-locals,too-many-statements
self,
line,
circuit,
end=None,
draw_gates_in_parallel=True):
"""
Generate the TikZ code for one line of the circuit up to a certain gate.
It modifies the circuit to include only the gates which have not been drawn. It automatically switches to other
lines if the gates on those lines have to be drawn earlier.
Args:
line (int): Line to generate the TikZ code for.
circuit (list<list<CircuitItem>>): The circuit to draw.
end (int): Gate index to stop at (for recursion).
draw_gates_in_parallel (bool): True or False for how to place gates
Returns:
tikz_code (string): TikZ code representing the current qubit line and, if it was necessary to draw other
lines, those lines as well.
"""
if end is None:
end = len(circuit[line])
tikz_code = []
cmds = circuit[line]
for i in range(0, end):
gate = cmds[i].gate
lines = cmds[i].lines
ctrl_lines = cmds[i].ctrl_lines
all_lines = lines + ctrl_lines
all_lines.remove(line) # remove current line
for _line in all_lines:
gate_idx = 0
while not circuit[_line][gate_idx] == cmds[i]:
gate_idx += 1
tikz_code.append(self.to_tikz(_line, circuit, gate_idx))
# we are taking care of gate 0 (the current one)
circuit[_line] = circuit[_line][1:]
all_lines = lines + ctrl_lines
pos = max([
self.pos[ll] for ll in range(min(all_lines),
max(all_lines) + 1)
])
for _line in range(min(all_lines), max(all_lines) + 1):
self.pos[_line] = pos + self._gate_pre_offset(gate)
connections = ""
for _line in all_lines:
connections += self._line(self.op_count[_line] - 1,
self.op_count[_line],
line=_line)
add_str = ""
if gate == X:
# draw NOT-gate with controls
add_str = self._x_gate(lines, ctrl_lines)
# and make the target qubit quantum if one of the controls is
if not self.is_quantum[lines[0]]:
if sum([self.is_quantum[i] for i in ctrl_lines]) > 0:
self.is_quantum[lines[0]] = True
elif gate == Z and len(ctrl_lines) > 0:
add_str = self._cz_gate(lines + ctrl_lines)
elif gate == Swap:
add_str = self._swap_gate(lines, ctrl_lines)
elif gate == SqrtSwap:
add_str = self._sqrtswap_gate(lines,
ctrl_lines,
daggered=False)
elif gate == get_inverse(SqrtSwap):
add_str = self._sqrtswap_gate(lines, ctrl_lines, daggered=True)
elif gate == Measure:
# draw measurement gate
for _line in lines:
op = self._op(_line)
width = self._gate_width(Measure)
height = self._gate_height(Measure)
shift0 = 0.07 * height
shift1 = 0.36 * height
shift2 = 0.1 * width
add_str += ("\n\\node[measure,edgestyle] ({op}) at ({pos}"
",-{line}) {{}};\n\\draw[edgestyle] ([yshift="
"-{shift1}cm,xshift={shift2}cm]{op}.west) to "
"[out=60,in=180] ([yshift={shift0}cm]{op}."
"center) to [out=0, in=120] ([yshift=-{shift1}"
"cm,xshift=-{shift2}cm]{op}.east);\n"
"\\draw[edgestyle] ([yshift=-{shift1}cm]{op}."
"center) to ([yshift=-{shift2}cm,xshift=-"
"{shift1}cm]{op}.north east);").format(
op=op,
pos=self.pos[_line],
line=_line,
shift0=shift0,
shift1=shift1,
shift2=shift2,
)
self.op_count[_line] += 1
self.pos[_line] += self._gate_width(
gate) + self._gate_offset(gate)
self.is_quantum[_line] = False
elif gate == Allocate:
# draw 'begin line'
add_str = "\n\\node[none] ({}) at ({},-{}) {{$\\Ket{{0}}{}$}};"
id_str = ""
if self.settings['gates']['AllocateQubitGate']['draw_id']:
id_str = "^{{\\textcolor{{red}}{{{}}}}}".format(cmds[i].id)
xpos = self.pos[line]
try:
if self.settings['gates']['AllocateQubitGate'][
'allocate_at_zero']:
self.pos[line] -= self._gate_pre_offset(gate)
xpos = self._gate_pre_offset(gate)
except KeyError:
pass
self.pos[line] = max(
xpos + self._gate_offset(gate) + self._gate_width(gate),
self.pos[line],
)
add_str = add_str.format(self._op(line), xpos, line, id_str)
self.op_count[line] += 1
self.is_quantum[line] = self.settings['lines']['init_quantum']
elif gate == Deallocate:
# draw 'end of line'
op = self._op(line)
add_str = "\n\\node[none] ({}) at ({},-{}) {{}};"
add_str = add_str.format(op, self.pos[line], line)
yshift = str(self._gate_height(gate)) + "cm]"
add_str += (
"\n\\draw ([yshift={yshift}{op}.center) edge [edgestyle] ([yshift=-{yshift}{op}.center);"
).format(op=op, yshift=yshift)
self.op_count[line] += 1
self.pos[line] += self._gate_width(gate) + self._gate_offset(
gate)
else:
# regular gate must draw the lines it does not act upon
# if it spans multiple qubits
add_str = self._regular_gate(gate, lines, ctrl_lines)
for _line in lines:
self.is_quantum[_line] = True
tikz_code.append(add_str)
if not gate == Allocate:
tikz_code.append(connections)
if not draw_gates_in_parallel:
for _line in range(len(self.pos)):
if _line != line:
self.pos[_line] = self.pos[line]
circuit[line] = circuit[line][end:]
return "".join(tikz_code)
def _process_command(self, cmd):
"""
Check whether a command cmd can be handled by further engines and,
if not, replace it using the decomposition rules loaded with the setup
(e.g., setups.default).
Args:
cmd (Command): Command to process.
Raises:
Exception if no replacement is available in the loaded setup.
"""
if self.is_available(cmd):
self.send([cmd])
else:
# check for decomposition rules
decomp_list = []
potential_decomps = []
# First check for a decomposition rules of the gate class, then
# the gate class of the inverse gate. If nothing is found, do the
# same for the first parent class, etc.
gate_mro = type(cmd.gate).mro()[:-1]
# If gate does not have an inverse it's parent classes are
# DaggeredGate, BasicGate, object. Hence don't check the last two
inverse_mro = type(get_inverse(cmd.gate)).mro()[:-2]
rules = self.decompositionRuleSet.decompositions
for level in range(max(len(gate_mro), len(inverse_mro))):
# Check for forward rules
if level < len(gate_mro):
class_name = gate_mro[level].__name__
try:
potential_decomps = [d for d in rules[class_name]]
except KeyError:
pass
# throw out the ones which don't recognize the command
for d in potential_decomps:
if d.check(cmd):
decomp_list.append(d)
if len(decomp_list) != 0:
break
# Check for rules implementing the inverse gate
# and run them in reverse
if level < len(inverse_mro):
inv_class_name = inverse_mro[level].__name__
try:
potential_decomps += [
d.get_inverse_decomposition()
for d in rules[inv_class_name]
]
except KeyError:
pass
# throw out the ones which don't recognize the command
for d in potential_decomps:
if d.check(cmd):
decomp_list.append(d)
if len(decomp_list) != 0:
break
if len(decomp_list) == 0:
raise NoGateDecompositionError("\nNo replacement found for " +
str(cmd) + "!")
# use decomposition chooser to determine the best decomposition
chosen_decomp = self._decomp_chooser(cmd, decomp_list)
# the decomposed command must have the same tags
# (plus the ones it gets from meta-statements inside the
# decomposition rule).
# --> use a CommandModifier with a ForwarderEngine to achieve this.
old_tags = cmd.tags[:]
def cmd_mod_fun(cmd): # Adds the tags
cmd.tags = old_tags[:] + cmd.tags
cmd.engine = self.main_engine
return cmd
# the CommandModifier calls cmd_mod_fun for each command
# --> commands get the right tags.
cmod_eng = CommandModifier(cmd_mod_fun)
cmod_eng.next_engine = self # send modified commands back here
cmod_eng.main_engine = self.main_engine
# forward everything to cmod_eng using the ForwarderEngine
# which behaves just like MainEngine
# (--> meta functions still work)
forwarder_eng = ForwarderEngine(cmod_eng)
cmd.engine = forwarder_eng # send gates directly to forwarder
# (and not to main engine, which would screw up the ordering).
chosen_decomp.decompose(cmd) # run the decomposition
Z = ZGate()
class SGate(BasicGate):
""" S gate class """
@property
def matrix(self):
return np.matrix([[1, 0], [0, 1j]])
def __str__(self):
return "S"
S = SGate()
Sdag = Sdagger = get_inverse(S)
class TGate(BasicGate):
""" T gate class """
@property
def matrix(self):
return np.matrix([[1, 0], [0, cmath.exp(1j * cmath.pi / 4)]])
def __str__(self):
return "T"
T = TGate()
Tdag = Tdagger = get_inverse(T)
dataset1[i]=func(i,n)
dataset=[x.real for x in dataset1]
'''
Quantum
'''
#the QFT misses a swap operation
for i in range(int(n/2)):
Swap | (Qubits[i],Qubits[n-i-1])
QFT | Qubits[0:n]
#Control rotation
Control_Rotation(eng,Qubits,dataset,n)
#inverse QFT
get_inverse(QFT) | Qubits[0:n]
for i in range(int(n/2)):
Swap | (Qubits[i],Qubits[n-i-1])
#Get the quantum output and store in classical numpy. Named Quantum
qstate=qutoclass(eng,Qubits, n, 1)
#nomalized
qsum=math.sqrt(sum(abs(x)**2 for x in qstate))
qstate=qstate/qsum
All(Measure) | Qubits
'''
Classical
'''
#classical method to get the circulent matrix, and solve the problem in classical, named Circulent
F=np.zeros((2**n,2**n))*(0+0j)
for i in range(2**n):
input()
print("It will take your opponents move and compare them.")
input()
print("But first you'll have to sign in...\n")
# prepare qubits
qubits = eng.allocate_qureg(5)
# referee decides things in the X basis, so we prepare it in the |+> state
H | qubits[2]
# implement human move
if (humanMove == "s"):
S | qubits[2]
else:
get_inverse(S) | qubits[2]
# opponent qubit is prepared in state |+> to randomly decide the move to make
H | qubits[opponent]
# to implement the quantum move, first do an S in all cases
S | qubits[2]
# then use a controlled-Z to make it into a Sdg if that's what the quantum player chooses
H | qubits[2]
CNOT | (qubits[opponent], qubits[2])
H | qubits[2]
# quantum player wins if the moves where different, which would leave referee in the |+> state
# human player wins if the moves were the same
# we measure in the X basis to see
H | qubits[2]
def zoo_profile():
"""Generate and display the zoo of quantum gates."""
# create a main compiler engine with a drawing backend
drawing_engine = CircuitDrawer()
locations = {0: 1, 1: 2, 2: 0, 3: 3}
drawing_engine.set_qubit_locations(locations)
main_eng = MainEngine(drawing_engine)
qureg = main_eng.allocate_qureg(4)
# define a zoo of gates
te_gate = TimeEvolution(0.5, 0.1 * QubitOperator('X0 Y2'))
def add(x, y):
return x, y + 1
zoo = [
(X, 3),
(Y, 2),
(Z, 0),
(Rx(0.5), 2),
(Ry(0.5), 1),
(Rz(0.5), 1),
(Ph(0.5), 0),
(S, 3),
(T, 2),
(H, 1),
(Toffoli, (0, 1, 2)),
(Barrier, None),
(Swap, (0, 3)),
(SqrtSwap, (0, 1)),
(get_inverse(SqrtSwap), (2, 3)),
(SqrtX, 2),
(C(get_inverse(SqrtX)), (0, 2)),
(C(Ry(0.5)), (2, 3)),
(CNOT, (2, 1)),
(Entangle, None),
(te_gate, None),
(QFT, None),
(Tensor(H), None),
(BasicMathGate(add), (2, 3)),
(All(Measure), None),
]
# apply them
for gate, pos in zoo:
if pos is None:
gate | qureg
elif isinstance(pos, tuple):
gate | tuple(qureg[i] for i in pos)
else:
gate | qureg[pos]
main_eng.flush()
# generate latex code to draw the circuit
s = drawing_engine.get_latex()
prefix = 'zoo'
with open('{}.tex'.format(prefix), 'w') as f:
f.write(s)
# compile latex source code and open pdf file
os.system('pdflatex {}.tex'.format(prefix))
openfile('{}.pdf'.format(prefix))
H | qubits[3]
CNOT | (qubits[3], qubits[2])
X | qubits[3]
bobs[2] = 1
T | qubits[2]
if (ship == "f"): # f means 3 and 4
H | qubits[3]
CNOT | (qubits[3], qubits[4])
X | qubits[3]
bobs[3] = 1
T | qubits[3]
# apply the bombs
# whether or not a bomb is applied corresponds to the two measurment choices for CHSH (in x-y plane)
if (bobs[bomb1] == 1):
get_inverse(S) | qubits[bomb1]
else:
S | qubits[bomb1]
if (bobs[bomb2] == 1):
get_inverse(S) | qubits[bomb2]
else:
S | qubits[bomb2]
# measure all in X basis
H | qubits[0]
Measure | qubits[0]
H | qubits[1]
Measure | qubits[1]
H | qubits[2]
Measure | qubits[2]
H | qubits[3]
def high_level_gates(eng, cmd):
g = cmd.gate
if g == QFT or get_inverse(g) == QFT or g == Swap:
return True
return eng.next_engine.is_available(cmd)
