TNO-Quantum: QKD key-rate

TNO Quantum provides generic software components aimed at facilitating the development of quantum applications.

The tno.quantum.communication.qkd_key_rate package provides python code to compute optimal protocol parameters for different quantum key distribution (QKD) protocols.

The codebase is based on the following papers:

• Attema et al. - Optimizing the decoy-state BB84 QKD protocol parameters (2021)
• Ma et al. - Quantum key distribution with entangled photon sources (2007)

The following quantum protocols are supported:

• BB84 protocol,
• BB84 protocol using a single photon source,
• BBM92 protocol.

The following classical error-correction protocols are supported:

• Cascade,
• Winnow.

The presented code can be used to

• determine optimal parameter settings needed to obtain the maximum key rate,
• correct errors in exchanged sifted keys for the different QKD protocols,
• apply privacy amplification by calculating secure key using hash function.

Documentation

Documentation of the tno.quantum.communication.qkd_key_rate package can be found here.

The documentation contains usage examples that show

• How to compute the secure key-rate for various protocols as function of the loss.

• How to compute secure key-rate using the finite key-rate protocol for different number of pulses.

Install

Easily install the tno.quantum.communication.qkd_key_rate package using pip:

$ python -m pip install tno.quantum.communication.qkd_key_rate

If you wish to run the tests you can use:

$ python -m pip install tno.quantum.communication.qkd_key_rate[tests]

(End)use limitations

The content of this software may solely be used for applications that comply with international export control laws.