Demo­QuanDT Con­sor­ti­um sub­mits Paper on the Crea­ti­on of a QKD Net­work

The Demo­QuanDT pro­ject (Janu­ary 2022 to Decem­ber 2024), fun­ded by the Bun­des­mi­nis­te­ri­um für Bil­dung und For­schung (BMBF), aimed to deve­lop and demons­tra­te a secu­re and ven­dor-inde­pen­dent QKD (Quan­tum Key Dis­tri­bu­ti­on) net­work in Ger­ma­ny. The focus was on set­ting up a test rou­te bet­ween Ber­lin and Bonn, invol­ving various QKD hard­ware manu­fac­tu­r­ers and uti­li­zing exis­ting fiber-optic infra­struc­tu­re and regu­lar ope­ra­tio­nal sites.

 

In late March 2025, the Demo­QuanDT con­sor­ti­um sub­mit­ted a paper, which is now available online. The pre­print descri­bes a ground­brea­king achie­ve­ment: the crea­ti­on of a quan­tum-secu­red link over 923 km bet­ween Ber­lin and Bonn. The pro­ject thus not only demons­tra­tes the tech­ni­cal fea­si­bi­li­ty of inte­gra­ting QKD into exis­ting net­work infra­struc­tures, but also the sca­la­bi­li­ty and prac­ti­cal imple­men­ta­ti­on in a real-world car­ri­er envi­ron­ment.