- flamingpy.cv.gkp.Z_err_cond(var, hom_val, var_num=10, replace_undefined=0, use_hom_val=False)¶
Return phase error probabilities conditioned on homodyne outcomes.
Return the phase error probability for a list of variances var given homodyne outcomes hom_val, with var_num used to determine the number of terms to keep in the summation in the formula. By default, the fractional part of hom_val is used in the summation; if use_hom_val is True, use the entire homodyne value.
var (array) – the variances of the p quadrature.
hom_val (array) – the p-homodyne outcomes.
var_num (float) – number of variances away from the origin we include in the integral.
replace_undefined (float) – how to handle 0 denominators. If ‘bin_location’, return poor-man’s probability that ranges from 0 in the centre of a bin to 0.5 halfway between bins. Otherwise, sets it to the replace_undefined value (0 by default).
use_hom_val (bool) – if True, use the entire homodyne value hom_val in the expression; otherwise use the fractional part.
- probability of Z (phase flip) errors for each variance,
contioned on the homodyne outcomes.
- Return type