Dephasing due to which path detector

  title={Dephasing due to which path detector},
  author={Eyal Buks and R. Schuster and Moty Heiblum and Diana Mahalu and Vladimir I. Umansky},
We study dephasing of electrons induced by a which path detector and thus verify Bohr’s complementarity principle for fermions. We utilize a double path interferometer with two slits, with one slit being replaced by a coherent quantum dot (QD). A short one dimensional channel, in the form of a quantum point contact (QPC), in close proximity to the QD, serves as a which path detector. We find that by varying the properties of the QPC detector we affect the visibility of the interference… CONTINUE READING


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