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Patrick Potts

Postdoctoral fellow

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Emission of time-bin entangled particles into helical edge states

Author

  • Patrick P. Hofer
  • Markus Büttiker

Summary, in English

We propose a single-particle source which emits into the helical edge states of a two-dimensional quantum spin Hall insulator. Without breaking time-reversal symmetry, this source acts like a pair of noiseless single-electron emitters which each inject separately into a chiral edge state. By locally breaking time-reversal symmetry, the source becomes a proper single-particle emitter which exhibits shot noise. Due to its intrinsic helicity, this system can be used to produce time-bin entangled pairs of electrons in a controlled manner. The noise created by the source contains information on the emitted wave packets and is proportional to the concurrence of the emitted state.

Publishing year

2013-12-30

Language

English

Publication/Series

Physical Review B - Condensed Matter and Materials Physics

Volume

88

Issue

24

Document type

Journal article

Publisher

American Physical Society

Status

Published

ISBN/ISSN/Other

  • ISSN: 1098-0121