def QS_plotter_forobservable(num_qubits,ansatzlist,times,whatKs,qstype,observable,initial_state, evalmethod='matrix_multiplication', expectation_calculator = None,line_styles=[],linewidths=2):
"""
evalmethod can either be "qiskit_circuits" or "matrix_multiplication"
"""
if evalmethod == "qiskit_circuits" and expectation_calculator == None:
raise(RuntimeError("You need to pass in the expectation_calculator as an argument (see the Qiskit_helperfunctions package)."))
if qstype == 'TQS':
name = 'TQS'
if qstype == 'QAS':
name = 'QAS'
if qstype == 'CQFF':
name = 'CQFF'
lscount=0
for i in range(len(ansatzlist)):
if i in whatKs:
print('Preparing observable for plotting for K = ' + str(i))
ansatz = ansatzlist[i]
O_matrix_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, observable, "O")
if evalmethod == 'matrix_multiplication':
print('Evaluating Observable Matrix classically')
Omat = O_matrix_uneval.evaluate_matrix_by_matrix_multiplicaton(initial_state)
elif evalmethod == "qiskit_circuits":
print("Evaluating Observable Matrix with Qiskit circuits")
Omat = O_matrix_uneval.evaluate_matrix_with_qiskit_circuits(expectation_calculator)
result_pauli_string, result_alphas = ansatz.get_alphas()
result_alphas = list(zip(*result_alphas))
observable_vals = []
for time_idx in range(len(times)):
time = times[time_idx]
alpha = result_alphas[time_idx]
alpha = np.array(alpha)
observable_value = alpha.conj().T @ Omat @ alpha
observable_value = observable_value.real
observable_vals.append(observable_value)
lab = name + ' K=' + str(i)
if len(line_styles)!=0:
plt.plot(times, observable_vals,label=lab,linestyle=line_styles[lscount],linewidth=linewidths)
lscount=lscount+1
else:
plt.plot(times, observable_vals,label=lab,linewidth=linewidths)
def getdata_forbetamatrix_observable(num_qubits,ansatzlist,whatKs,observable,initial_state,betamatrixlist,evalmethod='matrix_multiplication',expectation_calculator=None):
if evalmethod == "qiskit_circuits" and expectation_calculator == None:
raise(RuntimeError("You need to pass in the expectation_calculator as an argument (see the Qiskit_helperfunctions package)."))
allresultlist = []
#betacounter = 0
for i in range(len(ansatzlist)):
if i in whatKs:
print('Preparing observable for plotting for K = ' + str(i))
ansatz = ansatzlist[i]
O_matrix_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, observable, "O")
if evalmethod == 'matrix_multiplication':
print('Evaluating Observable Matrix classically')
Omat = O_matrix_uneval.evaluate_matrix_by_matrix_multiplicaton(initial_state)
elif evalmethod == "qiskit_circuits":
print("Evaluating Observable Matrix with Qiskit circuits")
Omat = O_matrix_uneval.evaluate_matrix_with_qiskit_circuits(expectation_calculator)
result = 0
#for a in range(len(betamatrixlist[i-1])):
# for b in range(len(betamatrixlist[i-1])):
# result = result + betamatrixlist[i-1][a][b]*Omat[b][a]
result = result + np.trace(betamatrixlist[i-1]@Omat)
allresultlist.append(result)
#betacounter = betacounter+1
return allresultlist
ansatzlist = []
ansatzlist.append(ansatz)
betamatrixlist = []
#Run IQAE
for k in range(1, uptowhatK + 1):
print('##########################################')
print('K = ' + str(k))
#Generate Ansatz for this round
ansatz = acp.gen_next_ansatz(ansatz,
hamiltonian,
num_qubits,
method='random_selection_new',
num_new_to_add=numberofnewstatestoadd)
ansatzlist.append(ansatz)
E_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, hamiltonian, "E")
D_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, hamiltonian, "D")
if optimizer == 'feasibility_sdp':
R_mats_uneval = []
F_mats_uneval = []
for thisL in L_terms:
R_mats_uneval.append(
mcp.unevaluatedmatrix(num_qubits, ansatz, thisL, "D"))
thisLdagL = hcp.multiply_hamiltonians(
hcp.dagger_hamiltonian(thisL), thisL)
F_mats_uneval.append(
mcp.unevaluatedmatrix(num_qubits, ansatz, thisLdagL, "D"))
#Here is where we should be able to specify how to evaluate the matrices. However only the exact method (classical matrix multiplication) has been implemented so far
E_mat_evaluated = E_mat_uneval.evaluate_matrix_by_matrix_multiplicaton(
def generate_IQAE_results(num_qubits, listofrandomhamiltonians,
noise_term_function):
finalresults = []
for hamiltonian in listofrandomhamiltonians:
gammas, L_terms = noise_term_function(num_qubits)
for k in range(1, uptowhatK + 1):
print('##########################################')
print('K = ' + str(k))
# max_k_val = k
#Generate Ansatz for this round
if random_selection_new:
ansatz = acp.gen_next_ansatz(
ansatz,
hamiltonian,
num_qubits,
method='random_selection_new',
num_new_to_add=numberofnewstatestoadd)
else:
ansatz = acp.gen_next_ansatz(ansatz, hamiltonian, num_qubits)
E_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz,
hamiltonian, "E")
D_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz,
hamiltonian, "D")
if optimizer == 'feasibility_sdp':
R_mats_uneval = []
F_mats_uneval = []
for thisL in L_terms:
R_mats_uneval.append(
mcp.unevaluatedmatrix(num_qubits, ansatz, thisL, "D"))
thisLdagL = hcp.multiply_hamiltonians(
hcp.dagger_hamiltonian(thisL), thisL)
F_mats_uneval.append(
mcp.unevaluatedmatrix(num_qubits, ansatz, thisLdagL,
"D"))
#Here is where we should be able to specify how to evaluate the matrices.
#However only the exact method (classical matrix multiplication) has been
#implemented so far
if use_qiskit:
E_mat_evaluated = E_mat_uneval.evaluate_matrix_with_qiskit_circuits(
expectation_calculator)
D_mat_evaluated = D_mat_uneval.evaluate_matrix_with_qiskit_circuits(
expectation_calculator)
else:
E_mat_evaluated = E_mat_uneval.evaluate_matrix_by_matrix_multiplicaton(
initial_state)
D_mat_evaluated = D_mat_uneval.evaluate_matrix_by_matrix_multiplicaton(
initial_state)
if optimizer == 'feasibility_sdp':
R_mats_evaluated = []
for r in R_mats_uneval:
if use_qiskit:
R_mats_evaluated.append(
r.evaluate_matrix_with_qiskit_circuits(
expectation_calculator))
else:
R_mats_evaluated.append(
r.evaluate_matrix_by_matrix_multiplicaton(
initial_state))
F_mats_evaluated = []
for f in F_mats_uneval:
if use_qiskit:
F_mats_evaluated.append(
f.evaluate_matrix_with_qiskit_circuits(
expectation_calculator))
else:
F_mats_evaluated.append(
f.evaluate_matrix_by_matrix_multiplicaton(
initial_state))
if optimizer == 'feasibility_sdp':
IQAE_instance = pp.IQAE_Lindblad(num_qubits,
D_mat_evaluated,
E_mat_evaluated,
R_matrices=R_mats_evaluated,
F_matrices=F_mats_evaluated,
gammas=gammas)
else:
IQAE_instance = pp.IQAE_Lindblad(num_qubits, D_mat_evaluated,
E_mat_evaluated)
IQAE_instance.define_optimizer(
optimizer,
eigh_invcond=eigh_inv_cond,
eig_invcond=eig_inv_cond,
degeneracy_tol=degeneracy_tol,
sdp_tolerance_bound=sdp_tolerance_bound)
IQAE_instance.evaluate()
density_mat, groundstateenergy = IQAE_instance.get_density_matrix_results(
)
#We ONLY append the highest K den mat (should be most accurate result)
finalresults.append(density_mat)
def big_ass_loop(delta,Gamma,mu, observable_obj_list):
"""
Here, observable_obj_list refers to a list of observable objects
"""
hamiltonian = generate_XXZ_hamiltonian(num_qubits, delta)
gammas, L_terms = generate_nonlocaljump_gamma_and_Lterms(num_qubits,Gamma,mu)
ansatz = acp.initial_ansatz(num_qubits)
#get the steady state using qutip(lol)
qtp_hamiltonian = qutip.Qobj(hamiltonian.to_matrixform())
qtp_Lterms = [qutip.Qobj(i.to_matrixform()) for i in L_terms]
qtp_C_ops = [np.sqrt(gammas[i]) * qtp_Lterms[i] for i in range(len(qtp_Lterms))]
qtp_rho_ss = qutip.steadystate(qtp_hamiltonian, qtp_C_ops,method='iterative-gmres')
#compute the theoretical observable expectation values
observable_matrixforms = [observable.to_matrixform() for observable in observable_obj_list]
theoretical_expectation_values = [np.trace(qtp_rho_ss.full() @ observable_matform) for observable_matform in observable_matrixforms]
#%%
#compute GQAS matrices
fidelity_results = dict()
observable_expectation_results = dict()
for k in range(1, uptowhatK + 1):
print('##########################################')
print('K = ' +str(k))
# max_k_val = k
#Generate Ansatz for this round
if random_selection_new:
ansatz = acp.gen_next_ansatz(ansatz, hamiltonian, num_qubits,method='random_selection_new',num_new_to_add=numberofnewstatestoadd)
else:
ansatz = acp.gen_next_ansatz(ansatz, hamiltonian, num_qubits)
O_matrices_uneval = []
for observable in observable_obj_list:
O_matrix_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, observable, "O")
O_matrices_uneval.append(O_matrix_uneval)
E_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, hamiltonian, "E")
D_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, hamiltonian, "D")
if optimizer == 'feasibility_sdp':
R_mats_uneval = []
F_mats_uneval = []
for thisL in L_terms:
R_mats_uneval.append(mcp.unevaluatedmatrix(num_qubits,ansatz,thisL,"D"))
thisLdagL = hcp.multiply_hamiltonians(hcp.dagger_hamiltonian(thisL),thisL)
F_mats_uneval.append(mcp.unevaluatedmatrix(num_qubits,ansatz,thisLdagL,"D"))
#Here is where we should be able to specify how to evaluate the matrices.
#However only the exact method (classical matrix multiplication) has been
#implemented so far
if use_qiskit:
E_mat_evaluated = E_mat_uneval.evaluate_matrix_with_qiskit_circuits(expectation_calculator)
D_mat_evaluated = D_mat_uneval.evaluate_matrix_with_qiskit_circuits(expectation_calculator)
O_matrices_evaluated = [i.evaluate_matrix_with_qiskit_circuits(expectation_calculator) for i in O_matrices_uneval]
else:
E_mat_evaluated = E_mat_uneval.evaluate_matrix_by_matrix_multiplicaton(initial_state)
D_mat_evaluated = D_mat_uneval.evaluate_matrix_by_matrix_multiplicaton(initial_state)
O_matrices_evaluated = [i.evaluate_matrix_by_matrix_multiplicaton(initial_state) for i in O_matrices_uneval]
if optimizer == 'feasibility_sdp':
R_mats_evaluated = []
for r in R_mats_uneval:
if use_qiskit:
R_mats_evaluated.append(r.evaluate_matrix_with_qiskit_circuits(expectation_calculator))
else:
R_mats_evaluated.append(r.evaluate_matrix_by_matrix_multiplicaton(initial_state))
F_mats_evaluated = []
for f in F_mats_uneval:
if use_qiskit:
F_mats_evaluated.append(f.evaluate_matrix_with_qiskit_circuits(expectation_calculator))
else:
F_mats_evaluated.append(f.evaluate_matrix_by_matrix_multiplicaton(initial_state))
##########################################
#Start of the classical post-processing. #
##########################################
if optimizer == 'feasibility_sdp':
IQAE_instance = pp.IQAE_Lindblad(num_qubits, D_mat_evaluated, E_mat_evaluated,R_matrices = R_mats_evaluated,F_matrices = F_mats_evaluated,gammas = gammas)
else:
IQAE_instance = pp.IQAE_Lindblad(num_qubits, D_mat_evaluated, E_mat_evaluated)
IQAE_instance.define_optimizer(optimizer, eigh_invcond=eigh_inv_cond,eig_invcond=eig_inv_cond,degeneracy_tol=degeneracy_tol,sdp_tolerance_bound=sdp_tolerance_bound)
IQAE_instance.evaluate()
# IQAE_instance.evaluate(kh_test=False)
#all_energies,all_states = IQAE_instance.get_results_all()
result_dictionary = pp.analyze_density_matrix(num_qubits,initial_state,IQAE_instance,E_mat_evaluated,ansatz,hamiltonian,gammas,L_terms,qtp_rho_ss,O_matrices_evaluated)
observable_expectation_results[k] = result_dictionary['observable_expectation']
fidelity_results[k] = result_dictionary['fidelity']
#if round(fidelity, 6) == 1:
# print("breaking loop as fidelity = 1 already")
# #raise(RuntimeError("Fidelity = 1!"))
# break
#print('JON: Got %s results'%len(fidelity_results))
return (observable_expectation_results, theoretical_expectation_values, fidelity_results)
#finalresults
finalresults = []
finalresults.append(ansatz)
#Run QAS
for k in range(1, uptowhatK + 1):
print(k)
#Generate Ansatz for this round
ansatz = acp.gen_next_ansatz(ansatz, hamiltonian, num_qubits)
#Set initial alphas for Ansatz
acp.set_initial_alphas(num_qubits, ansatz, 'start_with_initial_state')
E_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, hamiltonian, "E")
D_mat_uneval = mcp.unevaluatedmatrix(num_qubits, ansatz, hamiltonian, "D")
#Here is where we should be able to specify how to evaluate the matrices. However only the exact method (classical matrix multiplication) has been implemented so far
E_mat_evaluated = E_mat_uneval.evaluate_matrix_by_matrix_multiplicaton(
initial_state)
D_mat_evaluated = D_mat_uneval.evaluate_matrix_by_matrix_multiplicaton(
initial_state)
#Get starting alphas
startingstrings, startingalphas = ansatz.get_alphas()
#initialize QAS instance
QAS_instance = pp.QAS(num_qubits, D_mat_evaluated, E_mat_evaluated,
startingalphas)
QAS_instance.numberstep(num_steps)
