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Photonics 2016, 3(4), 59; doi:10.3390/photonics3040059

Single Microwave Photon Detection with a Trapped Electron

Department of Physics and Astronomy, University of Sussex, Falmer BN1 9QH, UK
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Received: 10 October 2016 / Revised: 10 November 2016 / Accepted: 15 November 2016 / Published: 19 November 2016
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Abstract

We investigate theoretically the use of an electron in a Penning trap as a detector of single microwave photons. At the University of Sussex we are developing a chip Penning trap technology, designed to be integrated within quantum circuits. Microwave photons are guided into the trap and interact with the electron’s quantum cyclotron motion. This is an electric dipole transition, where the near field of the microwave radiation induces quantum jumps of the cyclotron harmonic oscillator. The quantum jumps can be monitored using the continuous Stern-Gerlach effect, providing the quantum non demolition signal of the microwave quanta. We calculate the quantum efficiency of photon detection and discuss the main features and technical challenges for the trapped electron as a quantum microwave sensor. View Full-Text
Keywords: single trapped electron; single microwave photon; QND measurement; geonium chip; quantum cyclotron oscillator; quantum microwave circuits single trapped electron; single microwave photon; QND measurement; geonium chip; quantum cyclotron oscillator; quantum microwave circuits
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Cridland, A.; Lacy, J.H.; Pinder, J.; Verdú, J. Single Microwave Photon Detection with a Trapped Electron. Photonics 2016, 3, 59.

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