Experimental system design for the integration of trapped-ion and superconducting qubit systems

in: Quantum Information Processing (2016)
De Motte, Darren; Grounds, Anton R.; Rehák, Matús; Blanco, Andrea Rodriguez; Lekitsch, Bjoern; Giri, Gouri S.; Neilinger, Pavol; Oelsner, Gregor; Ilichev, Evgeni; Grajcar, Miroslav; Hensinger, Winfried K.
We present a design for the experimental integration of ion trapping and superconducting qubit systems as a step towards the realization of a quantum hybrid system. The scheme addresses two key difficulties in realizing such a system; a combined microfabricated ion trap and superconducting qubit architecture, and the experimental infrastructure to facilitate both technologies. Developing upon work by Kielpinski et al. [1] we describe the design, simulation and fabrication process for a microfabricated ion trap capable of coupling an ion to a superconducting microwave LC circuit with a coupling strength in the tens of kHz. We also describe existing difficulties in combining the experimental infrastructure of an ion trapping setup into a dilution fridge with superconducting qubits and present solutions that can be immediately implemented using current technology.

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