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Module: fqe.util

General Utilities

Functions

alpha_beta_electrons(...): Given the total number of electrons and the z-spin quantum number, return

bubblesort(...): Bubble Sort algorithm to arrange a list so that the lowest value is

configuration_key_intersection(...): Return the intersection of the passed configuration key lists.

configuration_key_union(...): Given a list of configuration keys, build a list which is the union of

dot(...): Calculate the dot product of two wavefunctions. Note that this does

init_bitstring_groundstate(...): Occupy the n lowest orbitals of a state in the bitstring representation

init_qubit_vacuum(...): Build the ground state wavefunction for an nqubit system.

invert_bitstring_with_mask(...): Invert a bitstring with a mask.

ltlt_index_generator(...): Generate index sets into a lower triangle, lower triangle matrix

map_broken_symmetry(...): Create a map between spin broken and number broken wavefunctions.

paritysort_int(...): Move all even numbers to the left and all odd numbers to the right

paritysort_list(...): Move all even numbers to the left and all odd numbers to the right

qubit_config_sector(...): Generate the basis vectors into the qubit basis representing all states

qubit_particle_number_index(...): Generate indexes corresponding to the coefficient that is associated

qubit_particle_number_index_spin(...): Generate indexes corresponding to the coefficient that is associated

qubit_particle_number_sector(...): Generate the basis vectors into the qubit basis representing all states

rand_wfn(...): Utility for generating random normalized wavefunctions.

reverse_bubble_list(...): Bubble Sort algorithm to arrange a list so that the lowest value is

sort_configuration_keys(...): Return a standard sorting of configuration keys in a wavefunction for

validate_config(...): Check that the parameters passed are valid to build a configuration

validate_tuple(...): Validate that the tuple passed in is valid for initializing a general

vdot(...): Calculate the inner product of two wavefunctions using conjugation on

zero_transform(...): Given a bitstring, determine if it satisfies the occupation and

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