Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 47: Quantum Information (Quantum Communication and Quantum Repeater)

Q 47.1: Talk

Thursday, March 17, 2022, 10:30–10:45, Q-H12

Commercializing QKD with continuous variables — •Ulrich Eismann, Emanuel Eichhammer, Emmeran Sollner, Martin Hauer, Oliver Maurhart, and Imran Khan — KEEQuant GmbH, Gebhardtstr. 28, 90762 Fürth, Germany

QKD was proposed in the 1980s as a means of distributing cryptographic keys with information-theoretic security based on quantum physics. However it is still awaiting widespread adoption, because early protocols were based on single-photon detectors, that are not easily scalable into commercial use cases because of their elevated size and cost.

In the advent of the quantum computer threat, we aim to make QKD a commodity by relying on standard telecom components, integrated photonics and electronics. This makes QKD invisible for the end user, and hence commercially viable.

We present KEEQuant's first QKD system, highlighting some of its technical challenges. We will elaborate on our QKD scaling approach using integrated photonics. Finally, we give an overview of how cryptographic keys are handled in a telecom network with our key management system (KMS).