US-Korea Workshop on Quantum Information Abstracts Progress in development of the quantum repeater based on ion trap technology at SK Telecom

To implement complex and practical quantum network, qubit exchange between arbitrary nodes without measurement is the most difficult technical challenge. Quantum repeater is an ideal solution for this problem with the help of entanglement. At SK telecom, we are developing quantum repeater based on ion trap technology. Trapped ions have several advantages as an ideal platform for quantum repeater, such as long trapping time by the electrical confinement, long coherence time from the perfect isolation in ultra high-vacuum (UHV) environment, and relatively easy interface with photonic qubit due to optical transition in atomic structure.