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qobjects.py
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executable file
·266 lines (230 loc) · 5.84 KB
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Thu Dec 17 12:38:54 2020
@author: tom
"""
import numpy as np
import qutip as qu
import qutipfuncs as qf
from H_funcs import default_args
def _pol_from_stokes(S):
ep, em = qf.Stokes2EpEm(*S)
return [ep, 0, em]
def _k_from_angle(angle):
angle = np.radians(angle)
kx = np.sin(angle)
ky = 0
kz = np.cos(angle)
return [kx, ky, kz]
class Level:
def __init__(self, name="LJ", J=0, S=0.5, L=0, pop=0, energy=0, system=None):
self.name = name
self._J = J
self.S = S
self.L = L
self.update_states()
self.system = system
self._pop = pop
if isinstance(pop, (int, float)):
self._pop = [pop] * self.N
@property
def J(self):
return self._J
@J.setter
def J(self, new_J):
self._J = new_J
self.update_states()
def update_states(self):
self.N = int(2 * self.J + 1)
self.M = np.arange(-self.J, self.J + 1)
self.states = [qu.basis(self.N, i) for i in range(self.N)]
@property
def pop(self):
return self._pop
@pop.setter
def pop(self, val):
if isinstance(val, (int, float)):
self._pop = [val] * self.N
else:
self._pop = val
if self.system:
self.system._rho()
def create_dict(self):
d = {"name": self.name, "J": self._J, "S": self.S, "L": self.L, "pop": self.pop}
return d
class Coupling:
def __init__(
self,
L1="1",
L2="2",
func=None,
args=None,
system=None,
):
self.L1 = L1
self.L2 = L2
self.name = L1 + L2
self.system = system
self.func = func
self.args = {}
if func and not args:
defaults = default_args[func]
for key, v in defaults.items():
self.args[self.name + key] = v
elif args:
for key, v in args.items():
self.args[self.name + key] = v
def create_dict(self):
pass
class Laser(Coupling):
def __init__(
self,
L1="1",
L2="2",
Omega=0,
Delta=0,
lw=0,
k=0,
S=None,
func="",
args=None,
system=None,
):
super().__init__(L1, L2, func, args, system)
self._Omega = Omega
self.Delta = Delta
self.lw = lw
if isinstance(k, (int, float)):
self.k = _k_from_angle(k)
else:
self.k = k
if S is None:
self.S = [0, 0, 1]
else:
self.S = S
for i in range(2):
if self.S[i] > 1:
self.S[i] = 1
self.S = np.array(self.S) / qf.norm(self.S)
self.pol = _pol_from_stokes(self.S)
@property
def Omega(self):
return self._Omega
@Omega.setter
def Omega(self, new_Omega):
self._Omega = new_Omega
if self.system:
self.system._interactions()
self.system._hamiltonian()
@property
def Delta(self):
return self._Delta
@Delta.setter
def Delta(self, new_Delta):
self._Delta = new_Delta
if self.system:
self.system._hamiltonian()
def create_dict(self):
d = {
"L1": self.L1,
"L2": self.L2,
"Omega": self.Omega,
"Delta": self.Detla,
"lw": self.lw,
"k": self.k,
"S": self.S,
"func": self.func,
"args": self.args,
}
return d
class Decay(Coupling):
def __init__(self, L1="1", L2="2", gamma=0, func=None, args=None, system=None):
super().__init__(L1, L2, func, args, system)
self._gamma = gamma
@property
def gamma(self):
return self._gamma
@gamma.setter
def gamma(self, val):
self._gamma = val
if self.system:
self.system._decays()
def create_dict(self):
d = {
"L1": self.L1,
"L2": self.L2,
"gamma": self.gamma,
"func": self.func,
"args": self.args,
}
return d
class Cavity(Coupling):
def __init__(
self,
L1="1",
L2="2",
g=0,
kappa=0,
Delta=0,
N=2,
n=0,
n2=0,
modes=2,
k=0,
pol=None,
func=None,
args=None,
system=None,
):
super().__init__(L1, L2, func, args, system)
self._g = g
self.kappa = kappa
self.Delta = Delta
if isinstance(k, (int, float)):
self.k = _k_from_angle(k)
else:
self.k = k
if pol is None:
self.pol = [1, 0, 1]
else:
self.pol = pol
self.N = N
self.modes = modes
self.states = [qu.basis(self.N, i) for i in range(self.N)]
if modes == 1:
self.psi0 = qu.basis(self.N, n)
elif modes == 2:
self.psi0 = qu.tensor(qu.basis(self.N, n), qu.basis(self.N, n2))
@property
def g(self):
return self._g
@g.setter
def g(self, val):
self._g = val
if self.system:
self.system._interactions()
self.system._hamiltonian()
@property
def Delta(self):
return self._Delta
@Delta.setter
def Delta(self, new_Delta):
self._Delta = new_Delta
if self.system:
self.system._hamiltonian()
def create_dict(self):
d = {
"L1": self.L1,
"L2": self.L2,
"g": self.Omega,
"Delta": self.Detla,
"kappa": self.kappa,
"k": self.k,
"pol": self.pol,
"func": self.func,
"args": self.args,
"N": self.N,
"n": self.n,
}
return d