Cryptography Reference
In-Depth Information
Transmitter
Receiver
Receiver
Figure 3.13
Quantum entanglement for space experiments (space-QUEST). Scheme
for satellite-based distribution of entangled photons (left: schematic (from [96]); lower
right: simulation for source on ISS and two specific ground stations (courtesy of ESA
General Studies, Copyright ESA-Autigravite)). Laser comunication satellite terminals
such as SILEX (upper right; courtesy of ESA) might provide the technology necessary
to establish the optical links between satellites or between satellite and ground stations.
distances beyond the capabilities of earthbound laboratories provides novel
opportunities for fundamental tests of quantum physics [95, 101].
Although one must not underestimate the demanding technological chal-
lenges associated with bringing quantum entanglement into space, the next
steps are both clear and feasible. They include the development of a next gen-
eration
of
space-proof
sources
for
entangled
photons
as
well
as
the
