unipolator 0.2.1

Unipolator allows for n dimensional unitary interpolation, and the calculation of propagators using unitary interpolation. Speeds up your propagators for linear quantum systems.

unipolator

Unitary Interpolation, for the calculation of propagators of time dependent quantum systems. Speeds up your propagators.

Install

Via pip install unipolator

Import

Via from unipolator import *

How To:

Generate an array of Hamiltonians H_s[0,...] = H_0, H_s[i,...] = H_i for a system with Hamiltonian $H(t) = H_0 + \sum_{i=1} c_i(t) H_i$. Initialize unitary interpolation

ui = UI(H_s, c_mins, c_maxs, c_bins)  

Calculate unitary by passing a complex numpy array U_ui and coefficients c to, a return argument is not needed, the inputed array is simply modified

ui.expmH( c, U_ui)

Similarly, pass a 3d array dUand calculate the derivatives as well.

ui.dexpmH( c, U, dU)

A 2d array allows the calculation of a complete pulse via

ui.expmH_pulse(cs, U)

Finally the GRAPE method is supported via (pass an array dI_dj.shape(n, cs.shape[0]) to store the gradients)

ui.grape(cs, U_target, target_indexes, U, dU, dI_dj)

Author:

Michael Schilling