Hosted at the Max Planck Institute for the Science of Light, InfiniQuant is part of Gerd Leuch’s division. While Leuch’s team focuses on fundamental research, InfiniQuant, lead by Imran Khan and Christoph Marquardt, investigates applications in quantum communication. Their research programs include Metropolitan Quantum Communication, Satellite Quantum Communication and Quantum Random Number Generation.
For the Metropolitan Quantum Communication project, InfiniQuant uses coherent quantum communication to enhance the security of intra-city cryptography. Coherent telecommunication technology underlies their quantum key distribution systems. Quantum states are distributed with state-of-the-art rates of 10 GBaud via an optical fiber link.
To address limitations in current quantum communication technologies which have a fixed amount of tolerable loss, InfiniQuant is researching quantum-enhanced satellites.Since the loss scales exponentially in fibers, it is hard to build a global communication network. However as light passes through free space, loss scales only quadratically. InfiniQuant proposes that satellites can be utilized to perform efficient quantum communication. The group is focusing on the development of Continuous Variable Quantum Key Distribution (CV-QKD) products based upon satellite and telecom fiber quantum channels.
InfiniQuant is using quantum mechanics to generate true random numbers at high speed.The company’s research-grade random number generators harness quantum randomness and use it for applications such as quantum cryptography devices.
Quantum-limited measurements of optical signals from a geostationary satellite
Kevin Günthner, Imran Khan, Dominique Elser, Birgit Stiller, Ömer Bayraktar, Christian R. Müller, Karen Saucke, Daniel Tröndle, Frank Heine, Stefan Seel, Peter Greulich, Herwig Zech, Björn Gütlich, Sabine Philipp-May, Christoph Marquardt, Gerd Leuchs