different results for the same simulations

[Alexander Zotov]

it seems that when plotting steady state P wrt A,eps for the two notebooks below gives different results when using the same paramters (paramters used:

delta = 1.0 * 2 * np.pi # qubit sigma_x coefficient
f = 5
w = f * 2 * np.pi # driving frequency
omega=w
# T = 2 * np.pi / w # driving period
gamma1 = 10/w # relaxation rate
gamma2 = 0.1/w # dephasing rate
# omega = 0.05 * 2 * np.pi # qubit sigma_z coefficient

A_vec = np.linspace(0.0, 20.0, 50) * 2 * np.pi # driving amplitude
eps0_vec = np.linspace(-20.0, 20.0, 50) * 2 * np.pi

notebook 1) https://notebook.community/ajgpitch/qutip-notebooks/examples/landau-zener-stuckelberg

notebook 2) https://notebook.community/cgranade/qutip-notebooks/examples/example-landau-zener

results from notebook 1) 

results from notebook  2)

[Simon Cross]

Hi Alexander,

The two notebooks you refer to are from forks of the qutip-notebooks repository, and not qutip/qutip-notebooks. I suggest we start from these two versions:

https://nbviewer.org/urls/qutip.org/qutip-tutorials/tutorials-v4/time-evolution/013_landau-zener.ipynb

https://nbviewer.org/urls/qutip.org/qutip-tutorials/tutorials-v4/time-evolution/014_landau-zener-stuckelberg.ipynb

I agree it appears that they are doing similar things, but the code in the two is different in many ways. It would be helpful for this to be less confusing and for the implementations to be more similar.

Would you mind opening an issue at https://github.com/qutip/qutip-tutorials and asking for those two tutorials to be improved and aligned?

Regards,

Simon