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Counting Individual Electrons on Liquid Helium

G. Papageorgiou·P. Glasson·K. Harrabi·V. Antonov·E. Collin·P. Fozooni·P. G. Frayne·M. J. Lea·Y. Mukharsky·D. G. Rees·.
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Abstract

We show that small numbers of electrons, including a single electron, can be held in a novel electrostatic trap above the surface of superfluid helium. A potential well is created using microfabricated electrodes in a 5 micron diameter pool of helium. Electrons are injected into the trap from an electron reservoir on a helium microchannel. They are individually detected using a superconducting single-electron transistor (SET) as an electrometer. A Coulomb staircase is observed as electrons leave the trap one-by-one until the trap is empty. A design for a scalable quantum information processor using arrays of electron traps is presented

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G. Papageorgiou, P. Glasson, K. Harrabi, V. Antonov, E. Collin, P. Fozooni, P. G. Frayne, M. J. Lea, Y. Mukharsky, D. G. Rees, .. 2004-05-05. Counting Individual Electrons on Liquid Helium. https://doi.org/10.1063/1.1900301

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