Abstract
We propose a new approach to quantum key distribution under the assumption that the qubits received during the execution of a protocol can be stored for a certain amount of time. This assumption, moti-vated by the ongoing research towards designing a quantum network, allows for the elaboration of conceptually new quantum key distribu-tion schemes. The data dependencies brought about by the Quantum Fourier Transform can be harnessed to design novel protocols with im-proved performance. Such a protocol marimises on eavesdropper's un-certainty over the nation trot mated, while amplifying the distur-bance caused by the act of eavesdropping. thus offering better chances of detecting the it ion. This due to the fact that a tested (cubit may reveal the presence of an eavesdropper even if that particular gubit was not "touched" while in transit. Our protocol is the first quantum key distribution protocol to exhibit this property.