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define common bases

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This commit is contained in:
Daniel Tsvetkov 2020-03-28 10:41:37 +01:00
parent 1b7c3a6cdc
commit c8f46a7174
2 changed files with 14 additions and 3 deletions
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6
10_krisi_3qubits_game.py
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@ -3,7 +3,7 @@ from collections import defaultdict
import numpy as np import numpy as np
from lib import State, b_phi_p, b_phi_m, b_psi_p, b_psi_m, s, generate_bins from lib import State, bell_basis, s, generate_bins
def test_krisi_measurement_2(): def test_krisi_measurement_2():
@ -33,7 +33,7 @@ def test_krisi_measurement_2():
# Measure in the Bell's basis # Measure in the Bell's basis
st = State(q0 * q1) st = State(q0 * q1)
meas = st.measure(basis=[b_phi_p, b_phi_m, b_psi_p, b_psi_m]) meas = st.measure(basis=bell_basis)
return meas return meas
correct = 0 correct = 0
@ -115,7 +115,7 @@ def test_krisi_measurement_3():
if MEASURE_FIRST_BELL: if MEASURE_FIRST_BELL:
# Measure in the Bell's basis # Measure in the Bell's basis
st = State(q0 * q1) st = State(q0 * q1)
meas = st.measure(basis=[b_phi_p, b_phi_m, b_psi_p, b_psi_m]) meas = st.measure(basis=bell_basis)
new_st = s("|" + meas + ">") new_st = s("|" + meas + ">")
st = State(new_st * q2) st = State(new_st * q2)
else: else:

11
lib.py
View File

@ -393,6 +393,12 @@ class State(Vector):
return [x, y, z] return [x, y, z]
class Ket(State):
def __init__(self, *args, **kwargs):
"""Alias: Ket is a state"""
State.__init__(self, *args, **kwargs)
def test_measure_partial(): def test_measure_partial():
state = b_phi_p state = b_phi_p
state.measure_partial(1) state.measure_partial(1)
@ -753,6 +759,11 @@ b_psi_m = State([[0],
[0]], [0]],
name="{}-".format(REPR_GREEK_PSI)) name="{}-".format(REPR_GREEK_PSI))
# define common bases:
computational_basis = [_0, _1]
plus_minus_basis = [_p, _m]
bell_basis = [b_phi_p, b_psi_p, b_phi_m, b_psi_m]
well_known_states = [_p, _m, b_phi_p, b_psi_p, b_phi_m, b_psi_m] well_known_states = [_p, _m, b_phi_p, b_psi_p, b_phi_m, b_psi_m]
_ = I = Gate([[1, 0], _ = I = Gate([[1, 0],