def GeneratePulseSeq(shor7a, shor7b, shor11, a):
NOP = sim.Delay(params, 0.1)
if a == 7:
a2modN = shor7b
amodN = shor7a
elif a == 11:
a2modN = sim.Delay(params, 0.1)
amodN = shor11
pulseseq_group = Kit.GeneratePulseSeq(params, NOP, a2modN, amodN)
return pulseseq_group
def test_heating_detailed(figNum):
NumberOfIons = 1
NumberofPhonons = 10
hspace = sim.hspace(NumberOfIons, 2, NumberofPhonons, 0)
params = sim.parameters(hspace)
dec = sim.decoherence(params)
# since data.RhoPNAll doesn't save phonons, we'll have to simulate sequentially
numRuns = 5
phonons = np.zeros(numRuns)
dec.doRandNtimes = 1
dec.dict['heating'] = True
dec.progbar = False
params.progbar = False
params.heatingrate = 250
maxDelay = 1000
pulseseq = sim.PulseSequence( [ \
sim.Delay(params, maxDelay), \
] )
widgets = [progbar.Percentage(), ' ', progbar.Bar(), ' ', progbar.ETA()]
pbar = progbar.ProgressBar(widgets=widgets).start()
for i in range(numRuns):
data = qc.simulateevolution(pulseseq, params, dec)
phonons[i] = qc.indexToState(np.nonzero(data.Yend)[0][0], hspace)[0]
pbar.update(int(1. * (i + 1) * 100 / numRuns))
epsilon = np.abs(maxDelay / params.heatingrate - np.mean(phonons))
return epsilon < 2 * np.std(phonons) # allow 2 sigma deviation
def GeneratePulseSeq(a):
NOP = sim.PulseSequence([sim.Delay(params, 0.1)])
if a in (2,7,8,13): # hard cases
if firstMultMap:
a2modN = cnot24
else:
a2modN = times4
else: # easy cases
a2modN = NOP
if a == 2:
amodN = times2
elif a == 7:
amodN = times7
elif a == 8:
amodN = times8
elif a == 13:
amodN = times13
elif a == 4:
amodN = cnot24
elif a == 11:
amodN = cnot13
elif a == 14:
amodN = cnot1234
pulseseq_group = Kit.GeneratePulseSeq(params, [NOP, a2modN, amodN])
return pulseseq_group
def doRamseyRun(hspace, params, dec):
tdelay = np.linspace(0,5000,500)
YR = np.zeros([len(tdelay),hspace.dimensions], np.complex64)
pop = np.zeros([len(tdelay),hspace.dimensions], np.complex64)
widgets = [progbar.Percentage(), ' ', progbar.Bar(),' ', progbar.ETA()]
pbar = progbar.ProgressBar(widgets=widgets).start()
for i in range(len(tdelay)):
pulseseq = sim.PulseSequence( [ \
sim.Rcar(params, pi/2, 0), \
sim.Delay(params, tdelay[i]), \
sim.Rcar(params, pi/2, pi/2) \
] )
data = qc.simulateevolution(pulseseq, params, dec)
YR[i,:] = data.YR[-1,:]
pbar.update(int(1.*(i+1)*100/(len(tdelay))))
data1 = sim.database(tdelay, YR, hspace, pulseseq=None, statesvalid = False)
data1.tracedpopulation(0)
[fitfun, par] = doRamseyFit(data1)
return data1, fitfun, par
def test_dephasing_detailed(figNum):
NumberOfIons = 1
NumberofPhonons = 0
hspace = sim.hspace(NumberOfIons, 2, NumberofPhonons, 0)
params = sim.parameters(hspace)
dec = sim.decoherence(params)
params.coherenceTime = 1000
params.correlationTime = 0.1
dec.doRandNtimes = 20
dec.dict['dephase'] = True
dec.progbar = False
params.stepsize = 10
params.ODEtimestep = 1
params.detuning = 2 * pi * 0.01 #kHz
params.progbar = False
#dec.doPP = True
#params.use_servers(['local'])
#dec.doPPprintstats = False
tdelay = np.linspace(0, 1000, 100)
YR = np.zeros([len(tdelay), hspace.dimensions], np.complex64)
pop = np.zeros([len(tdelay), hspace.dimensions], np.complex64)
widgets = [progbar.Percentage(), ' ', progbar.Bar(), ' ', progbar.ETA()]
pbar = progbar.ProgressBar(widgets=widgets).start()
for i in range(len(tdelay)):
pulseseq = sim.PulseSequence( [ \
sim.Rcar(params, pi/2, 0), \
sim.Delay(params, tdelay[i]), \
sim.Rcar(params, pi/2, pi/2) \
] )
data = qc.simulateevolution(pulseseq, params, dec)
YR[i, :] = data.YR[-1, :]
pbar.update(int(1. * (i + 1) * 100 / (len(tdelay))))
data1 = sim.database(tdelay, YR, hspace, pulseseq=None, statesvalid=False)
data1.tracedpopulation(figNum)
# fitting part
p0 = [0.5, params.detuning, pi / 2, 0.5, params.coherenceTime]
fitfun = lambda p, x: p[0] * np.cos(p[1] * x + p[2]) * np.exp(-np.log(
2) * (x / p[4])**2) + p[3]
errfun = lambda p, x, y: y - fitfun(p, x)
x = data1.T
y = data1.YR[:, 0]
par, covmat, infodict, mesg, ier = leastsq(errfun,
p0,
args=(x, y),
full_output=True)
epsilon = 100 # with 20 iterations allow 100us offset in coherence time
#print(par)
return data1
def SelectPermutation(select_order, doKitaev):
if select_order == 0:
Perm = sim.Delay(params, 0.1)
Perm2 = sim.Delay(params, 0.1)
Perm4 = sim.Delay(params, 0.1)
elif select_order == 1:
Perm = order1
Perm2 = sim.Delay(params, 0.1)
Perm4 = sim.Delay(params, 0.1)
elif select_order == 2:
Perm = order2
Perm2 = sim.Delay(params, 0.1)
Perm4 = sim.Delay(params, 0.1)
elif select_order == 3:
Perm = order31
if not doKitaev:
Perm2 = sim.PulseSequence([ \
sim.Hide(params, 1, False),
sim.Hide(params, 2, True),
order32 ])
Perm4 = sim.PulseSequence([ \
sim.Hide(params, 2, True),
sim.Hide(params, 1, True),
sim.Hide(params, 0, False),
order34, ])
def GeneratePulseSeq(self, params, Perms, perm2=None, perm3=None):
#Legacy support for old-style calls:
if perm2 and perm3:
Perms = [Perms, perm2, perm3]
''' generate pulse sequences given all permutations '''\
self.nOps = len(Perms)
controlRots = [ \
[sim.Delay(params, sim.Rac(params, pi/2**(i+1), 0, 0).duration),
sim.Rac(params, pi/2**(i+1), 0, 0)]
for i in range(self.nOps)]
Hadamard0 = sim.PulseSequence( [ \
sim.Rcar(params, pi/4, pi),
sim.Rac(params, pi, 0),
sim.Rcar(params, pi/4, 0) ])
def PulseSeqWithControls(ctl):
# 'ctl' is a bit array of control qubits
ctlstr = np.binary_repr(ctl).zfill(self.nOps - 1)
pulseseq = sim.PulseSequence([])
for k in range(self.nOps):
pulseseq.append(Hadamard0)
pulseseq.append(Perms[k])
pulseseq += [copy.deepcopy(controlRots[i] \
[int(ctlstr[self.nOps-i-k-1])]) for i in range(k)]
pulseseq.append(Hadamard0)
if k == self.nOps - 1:
pulseseq += [ \
sim.Hide(params, 1, True),
sim.Hide(params, 2, True),
sim.MeasInit(params, 0, incl_hidingerr=False) ]
else:
pulseseq += [ \
sim.Hide(params, 1, True),
sim.Hide(params, 2, True),
sim.MeasInit(params, 0),
sim.Hide(params, 1, False),
sim.Hide(params, 2, False) ]
return pulseseq
pulseseq_group = []
for ctl in range(2**(self.nOps - 1)):
pulseseq_group.append(PulseSeqWithControls(ctl))
return pulseseq_group
def GeneratePulseSeq(a):
NOP = sim.PulseSequence([sim.Delay(params, 0.1)])
if a in (2, 5, 16, 19): # a^2=4 cases
if firstMultMap:
a16modN = cnot15
else:
a16modN = times16
a8modN = times4
a4modN = times16
a2modN = times4
if a == 16:
a1modN = times16
else:
a1modN = cnot24 # only cheating method implimented...
elif a in (4, 10, 11, 17): # a^2=16 cases
if firstMultMap:
a16modN = cnot13
else:
a16modN = times4
a8modN = times16
a4modN = times4
a2modN = times16
if a == 4:
a1modN = times4
else:
a1modN = cnot24 # only cheating method implimented...
elif a in (8, 13):
a16modN = NOP
a8modN = NOP
a4modN = NOP
a2modN = NOP
if a == 8:
a1modN = cnot25
elif a == 13:
a1modN = cnot23
oplist = [a16modN, a8modN, a4modN, a2modN, a1modN]
pulseseq_group = Kit.GeneratePulseSeq(params, oplist)
return pulseseq_group
def test_spontdecay_detailed(figNum):
NumberOfIons = 1
NumberofPhonons = 1
hspace = sim.hspace(NumberOfIons, 2, NumberofPhonons, 0)
params = sim.parameters(hspace)
dec = sim.decoherence(params)
dec.doRandNtimes = 100
dec.dict['spontdecay'] = True
dec.doPP = True
dec.doPPprintstats = False
dec.progbar = False
# for the test we set it to 300 mus, instead of 1.168 s
params.lifetime = 300
params.y0[qc.stateToIndex(NumberOfIons * 'D' + ',0', hspace)] = 1
params.y0[qc.stateToIndex(NumberOfIons * 'S' + ',0', hspace)] = 0
pulseseq = sim.PulseSequence( [ \
sim.Delay(params, 1000), \
] )
data = qc.simulateevolution(pulseseq, params, dec)
data.tracedpopulation(figNum)
# fitting part
p0 = [1, params.lifetime]
fitfun = lambda p, x: p[0] * np.exp(-x / float(p[1]))
errfun = lambda p, x, y: y - fitfun(p, x)
x = data.T
y = data.YtrN[:, 0]
par, covmat, infodict, mesg, ier = leastsq(errfun,
p0,
args=(x, y),
full_output=True)
epsilon = 50 # with 100 iterations allow 50us offset in decay time
# print(np.abs(par[-1] - params.lifetime))
return np.abs(par[-1] - params.lifetime) < epsilon
def GeneratePulseSeq(a):
NOP = lambda: sim.PulseSequence([sim.Delay(params, 0.1)])
if a in (2, 7, 8, 13): # hard cases
if firstMultMap:
a2modN = cnotij(2, 4)
else:
a2modN = sim.PulseSequence([ \
sim.Hide(params, 1, True),
sim.Hide(params, 3, True), #vis: 2,4
Fredij(2,4),
sim.Hide(params, 1, False),
sim.Hide(params, 3, False),
sim.Hide(params, 2, True),
sim.Hide(params, 4, True), #vis: 1,3
Fredij(1,3),
sim.Hide(params, 2, False),
sim.Hide(params, 4, False)
])
else: # easy cases
a2modN = NOP()
if a == 4:
amodN = cnotij(2, 4)
elif a == 11:
amodN = cnotij(1, 3)
elif a == 14:
amodN = cnot1234()
elif a in (8, 13):
amodN = sim.PulseSequence([ \
sim.Hide(params, 1, True),
sim.Hide(params, 2, True), #vis: 3,4
Fredij(3,4),
sim.Hide(params, 2, False),
sim.Hide(params, 4, True), #vis: 2,3
Fredij(2,3),
sim.Hide(params, 1, False),
sim.Hide(params, 3, True), #vis: 1,2
Fredij(1,2),
sim.Hide(params, 3, False),
sim.Hide(params, 4, False)
])
elif a in (2, 7):
amodN = sim.PulseSequence([ \
sim.Hide(params, 3, True),
sim.Hide(params, 4, True), #vis: 1,2
Fredij(1,2),
sim.Hide(params, 3, False),
sim.Hide(params, 1, True), #vis: 2,3
Fredij(2,3),
sim.Hide(params, 4, False),
sim.Hide(params, 2, True), #vis: 3,4
Fredij(3,4),
sim.Hide(params, 1, False),
sim.Hide(params, 2, False) #vis: 1,2,3,4
])
if a in (7, 13):
amodN.append(cnot1234())
# if a == 2:
# amodN = times2
# elif a == 7:
# # amodN = times7
# amodN = copy.deepcopy(times2)
# amodN.append(cnot1234)
# elif a == 8:
# amodN = times8
# elif a == 13:
# # amodN = times13
# amodN = copy.deepcopy(times8)
# amodN.append(cnot1234)
# elif a == 4:
# amodN = cnot24
# elif a == 11:
# amodN = cnot13
# elif a == 14:
# amodN = cnot1234
pulseseq_group = Kit.GeneratePulseSeq(params, [NOP(), a2modN, amodN])
return pulseseq_group
sim.Hide(params, 1, True),
sim.Hide(params, 0, False),
order34, ])
else:
Perm2 = order32
Perm4 = order34
elif select_order == 4:
Perm = order4
if not doKitaev:
Perm2 = sim.PulseSequence([ \
sim.Hide(params, 1, False),
sim.Hide(params, 2, True),
order42 ])
else:
Perm2 = order42
Perm4 = sim.Delay(params, 0.1)
return Perm, Perm2, Perm4
### general pulse sequence
def GeneratePulseSeq(Perm, Perm2, Perm4, QFTseq, doKitaev):
if not doKitaev:
pulseseq = sim.PulseSequence([ \
sim.Hide(params, 3, True),
sim.Hide(params, 4, True),
sim.Rcar(params, pi/2, -pi/2),
sim.Hide(params, 3, False),
sim.Hide(params, 4, False),
sim.Hide(params, 0, True),
sim.Hide(params, 1, True,),
Perm,