Imaging electron interferometer

B. J. LeRoy, A. C. Bleszynski, K. E. Aidala, R. M. Westervelt, A. Kalben, E. J. Heller, S. E.J. Shaw, K. D. Maranowski, A. C. Gossard

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


An imaging interferometer was created in a two-dimensional electron gas by reflecting electron waves emitted from a quantum point contact with a circular mirror. Images of electron flow obtained with a scanning probe microscope at liquid He temperatures show interference fringes when the mirror is energized. A quantum phase shifter was created by moving the mirror via its gate voltage, and an interferometric spectrometer can be formed by sweeping the tip over many wavelengths. Experiments and theory demonstrate that the interference signal is robust against thermal averaging.

Original languageEnglish (US)
Article number126801
JournalPhysical review letters
Issue number12
StatePublished - Apr 1 2005

ASJC Scopus subject areas

  • General Physics and Astronomy


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