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arXiv · 1009.3425

Trapped electron coupled to superconducting devices

P. Bushev·D. Bothner·J. Nagel·M. Kemmler·K. B. Konovalenko·A. Loerincz·K. Ilin·M. Siegel·D. Koelle·R. Kleiner·F. Schmidt-Kaler
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Abstract

We propose to couple a trapped single electron to superconducting structures located at a variable distance from the electron. The electron is captured in a cryogenic Penning trap using electric fields and a static magnetic field in the Tesla range. Measurements on the electron will allow investigating the properties of the superconductor such as vortex structure, damping and decoherence. We propose to couple a superconducting microwave resonator to the electron in order to realize a circuit QED-like experiment, as well as to couple superconducting Josephson junctions or superconducting quantum interferometers (SQUIDs) to the electron. The electron may also be coupled to a vortex which is situated in a double well potential, realized by nearby pinning centers in the superconductor, acting as a quantum mechanical two level system that can be controlled by a transport current tilting the double well potential. When the vortex is trapped in the interferometer arms of a SQUID, this would allow its detection both by the SQUID and by the electron.

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P. Bushev, D. Bothner, J. Nagel, M. Kemmler, K. B. Konovalenko, A. Loerincz, K. Ilin, M. Siegel, D. Koelle, R. Kleiner, F. Schmidt-Kaler. 2010-09-17. Trapped electron coupled to superconducting devices. https://doi.org/10.1140/epjd%2Fe2011-10517-6

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