In reality, a perfect single photon source does not exist, hence practical sources, such as a weak coherent state laser source, are widely used for QKD.
Hence, practical sources, such as a weak coherent state laser source, are widely used for QKD. In reality, a perfect single photon source does not exist.
In reality, a perfect single photon source does not exist. Hence, practical sources, such as a weak coherent state laser source, are widely used for QKD.
In reality, a perfect single photon source does not exist. Hence, practical sources, such as a weak coherent state laser source, are widely used for QKD.