Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 51: Quantum Information (Quantum Repeater) II

Q 51.2: Talk

Thursday, March 14, 2019, 14:15–14:30, S HS 002 Chemie

Towards a nitrogen-vacancy center based quantum repeater — •Javid Javadzade, Florian Kaiser, Amlan Mukherjee, Ilja Gerhardt, and Jörg Wrachtrup — 3rd Institute of Physics, University of Stuttgart and Institute for Quantum Science and Technology IQST (Germany), Stuttgart, Germany

Quantum key distribution (QKD) enables provably secure communication. Overcoming channel loss in long-distance QKD requires a quantum repeater architecture. In this talk, I will outline how we plan to implement an elementary quantum repeater in the Q.Link.X project. Our central node will utilize a single nitrogen-vacancy center in diamond. This center is coupled to a nearby 13C nuclear spin quantum memory, which enables memory assisted QKD [1]. Our protocol is based on entanglement between spins and photonic time-bin modes. I will estimate entanglement rates and discuss further extensions and improvements.

[1] D. Luong et al. Appl. Phys. B, 122, 96 (2016)