Trapped electron coupled to superconducting devices

Details Trapped electron coupled to superconducting devices Trapped electron coupled to superconducting devices

2010-09-17

arxiv.org/abs/1009.3425v1

Eur. Phys. J. D 63, 9-16 (2011)

Physics

Condensed Matter

Superconductivity

13 pages, 5 figures

Scientific paper

10.1140/epjd/e2011-10517-6

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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