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Quantum communication allows us to solve tasks that are provably impossible using classical communication. A famous example is quantum key distribution which enables secure communication. Here, security can directly be traced back to fundamental properties of quantum entanglement, and is guaranteed even if an eavesdropper holds a quantum computer now or in the future. Many other applications have already been identified ranging from solving clock synchronization, to exotic applications such as extending the baseline of telescopes to make better observations. In this talk, we will give an overview of the state of the art of quantum communication, and look at how quantum entanglement might help us to solve cryptographic problems. We continue to look ahead to some of the many challenges to be solved in order to realize large scale quantum networks, which may eventually allow us to create entanglement between any two points on earth yielding new insights to physics, and bringing entirely new internet applications.

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Stephanie Wehner, QuTech, Delft University of Technology
HS II
Contact: David Gross