1;

Nlevels=3;
w12=1e9;
w_hpf=6800;
w13=w12-w_hpf;


%      -----------  |1>
%         /     \
%    E_d /       \ 
%       /         \ E_p
%      /           \
%    -------- |3>   \
%                    \
%               ___________ |2>


% unperturbed Hamiltonian energy levels
levels_energy=[ w12, 0,  w_hpf];
levels_energy=levels_energy*hbar;
H0=zeros(Nlevels);
H0=diag(levels_energy);
%for i=1:Nlevels
	%H0(i,i)=levels_energy(i);
%endfor

% decay matrix g(i,j) correspnds to decay from i-->j
gamma=6;
gamma_23=.001;
g_decay=zeros(Nlevels);
g_decay(1,2)=gamma; %upper level decay
g_decay(1,3)=gamma; %upper level decay
g_decay(3,2)=gamma_23; % lower levels mixing
g_decay(2,3)=gamma_23; % lower levels mixing

%defasing matris
g_deph=0;
g_dephasing=zeros(Nlevels);
g_dephasing(1,2)=g_deph;
g_dephasing(2,1)=g_dephasing(1,2);
g_dephasing(1,3)=g_deph;
g_dephasing(3,1)=g_dephasing(1,3);



% dipole matrix
dipole_elements=zeros(Nlevels);
dipole_elements(1,2)=1;
dipole_elements(2,1)=dipole_elements(1,2);
dipole_elements(3,1)=1;
dipole_elements(1,3)=dipole_elements(3,1);