qkd_key_rate.utils package

Utility functions

qkd_key_rate.utils.binary_entropy(e)

Binary entropy function.

\(h(e):\mathbb{R} \rightarrow [0,1]\) is the binary entropy function.

The domain of the function has been extended such that the optimizer can do a proper constrained non-linear optimization.

Return type:

float

qkd_key_rate.utils.one_minus_binary_entropy(e)

One minus the binary entropy function.

\(h(e):\mathbb{R} \rightarrow [0,1]\) is the binary entropy function.

The domain of the function has been extended such that the optimizer can do a proper constrained non-linear optimization.

This computation is more precise if \(h(e)\) is close to zero or one.

Return type:

float

• qkd_key_rate.utils.entropy module
  • binary_entropy()
  • one_minus_binary_entropy()
• qkd_key_rate.utils.required_linktime module
  • get_efficiency()
  • get_estimate_on_communication()