The use of satellites appears to be particularly advantageous because most optical paths traversed by a single photon are in free space. This leads to a lower loss compared to ground-based single-photon distribution via atmospheric or fiber-optic links. Therefore, satellites have been recognized as one of the best methods to achieve quantum communication globally with current and short-term resources.
Furthermore, satellites are used to implement QKD over long distances with untrusted nodes. Currently, most long-distance QKD implementations lack a quantum repeater. Other satellite-based applications include using quantum strategies for tasks such as establishing a robust and secure international time scale via a quantum network of clocks, extending the baseline of telescopes for improved astronomical imaging, and exploring fundamental physics.
For the successful deployment of a satellite-based quantum internet, several factors such as current technological knowledge, resource availability and economic efficiency must be considered.
We are ready to derive sufficiently detailed and concise technical requirements to implement quantum hardware — both on the satellite and in the optical ground station receiver station with our deep understanding of the cutting-edge research in house and the scientific literature.
For that, qtlabs supports the analysis of your business case to understand the user requirements better. Further, we advise and assist you in the continuing development phase. Additionally, we conduct feasibility studies and build prototypes.