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test_states.py
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test_states.py
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# This file is part of QuTiP.
#
# QuTiP is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# QuTiP is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with QuTiP. If not, see <http://www.gnu.org/licenses/>.
#
# Copyright (C) 2011 and later, Paul D. Nation & Robert J. Johansson
#
###########################################################################
from numpy.testing import assert_, run_module_suite
from qutip import *
class TestStates:
"""
A test class for the QuTiP functions for generating quantum states
"""
def testCoherentDensityMatrix(self):
"""
states: coherent density matrix
"""
N = 10
rho = coherent_dm(N, 1)
# make sure rho has trace close to 1.0
assert_(abs(rho.tr() - 1.0) < 1e-12)
def testThermalDensityMatrix(self):
"""
states: thermal density matrix
"""
N = 40
rho = thermal_dm(N, 1)
# make sure rho has trace close to 1.0
assert_(abs(rho.tr() - 1.0) < 1e-12)
def testFockDensityMatrix(self):
"""
states: Fock density matrix
"""
N = 10
for i in range(N):
rho = fock_dm(N, i)
# make sure rho has trace close to 1.0
assert_(abs(rho.tr() - 1.0) < 1e-12)
assert_(rho.data[i, i] == 1.0)
if __name__ == "__main__":
run_module_suite()