Experimental system design for the integration of trapped-ion and superconducting qubit systems
De Motte, Anton Grounds, Marian Rehak, A. Blanco, Bjoern Lekitsch, Gouri Shankar Giri, P. Neilinger, G. Oelsner, Evgeni V. Il’ichev, M. Grajcar, W. K. Hensinger · Quantum Information Processing · 2016
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. (Phys Rev Lett 108(13):130504, 2012. doi: 10.1103/PhysRevLett.108.130504 ), 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 set-up into a dilution refrigerator with superconducting qubits and present solutions that can be immediately implemented using current technology.